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Date: Mon, 2 Mar 1998 15:16:50 -0700 (MST)
From: owner-fordtrucks80up-digest ListService.net (fordtrucks80up-digest)
To: fordtrucks80up-digest ListService.net
Subject: fordtrucks80up-digest V2 #80
Reply-To: fordtrucks80up ListService.net
Sender: owner-fordtrucks80up-digest ListService.net


fordtrucks80up-digest Monday, March 2 1998 Volume 02 : Number 080



=======================================================================
Ford Truck Enthusiasts - 1980 - 1996 Trucks Digest
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message.
=======================================================================
In this issue:

351 Exhaust Leaks [FPonzani ]
Re: 82 van engine swap [Docmi5 ]
Re: fordtrucks80up-digest V2 #79 [Bill Funk ]
Pinging and Engine Temp ["Chapman, David P" ]
Front rotors on 95 Aerostar (electronic all wheel drive) [JHCHAMBE am.pnu]
Re: 88 rear abs [Iguannna ]
Pinging and engine temp. [John Cassis ]
Re: F-250 Brake Problems [JDavis1277 ]
RE: fuel economy ["Musolino, John" ]
exhaust system for a 89 Ford Bronco [Dave Send ]
RE: exhaust ["Beaman, James" ]
Re: Pinging and engine temp. [Jason DiSalvo ]
CDR valve 7.3L Diesel ["David Krasko"
backfire problem [WindWaiver ]
RE: Pinging and engine temp. ["Chapman, David P"
RE: Pinging and engine temp. ["Chapman, David P"
Re: 82 van engine swap ["David J. Baldwin" ]
CARB ICING [Mike Johnson ]
Re: exhaust [JSC721 ]
Re: Pinging and engine temp. [Chad Royse ]
Pinging & engine temp. [John Cassis ]
Re: backfire problem [Chad Royse ]
RE: Pinging and engine temp. ["Chapman, David P"
RE: Pinging and engine temp. [Jason DiSalvo ]
Selling my F150 [Jason DiSalvo ]
Re: backfire problem ["curtis miller" ]
Re: Two shocks too many? ["Dave Resch"]
Re: backfire problem [Mark Ponsford ]
Re: backfire problem [Ken Payne ]
Re: fordtrucks80up-digest V2 #77 [Joe Zuk ]
Leveling Coils [John Cassis ]

=======================================================================

----------------------------------------------------------------------

Date: Mon, 2 Mar 1998 06:31:35 EST
From: FPonzani
Subject: 351 Exhaust Leaks

My '91 Bronco 351 has an exhaust leak. The loudest leak is coming from the
front passenger side of the engine. I checked the EGR tube and it is in good
shape, although I suppose it could be leaking from the fittings. A friend
told me that these trucks had a habit of cracking the exhaust manifold. Is
that true? How would I check for this or a leaking exhaust manifold gasket?
Is pulling the manifold off hard? It certainly looks it, between the limited
access and the rust. Or is there something else in this area I should be
looking for? This leak is quite loud and VERY annoying. Any help is
certainly appreciated.

Recently there was some discussion concerning all the postings about gas
mileage. Here's my take: My Bronco gets about 11mpg in combined driving.
That's about 10.5 cents per mile in fuel costs (at $1.15/gal). If I can
squeeze 2mpg more out of it, I'll save about $165/year if I drive 10,000 miles
($240 for 15,000 miles!). That could add up to $800 - $1,000 over the next
five years! So if I can spend a few bucks to get that extra mpg and enjoy
better performance to boot, I'm all for it! So keep the ideas on increasing
mileage coming!!!

Again, if anyone has some sage advice on the exhaust leaks, please let me
know.

------------------------------

Date: Mon, 2 Mar 1998 08:08:15 EST
From: Docmi5
Subject: Re: 82 van engine swap

Where can I find out if they had factory v-8`s in 82 econoline vans?

------------------------------

Date: Mon, 02 Mar 1998 06:27:11 -0700
From: Bill Funk
Subject: Re: fordtrucks80up-digest V2 #79

> From: "Posluszny, Walt (posl)"
> Subject: Two shocks too many?
>
> Folks,
>
> I've got an 85 F150 4x4 with the factory quad front shock set-up.
> I've
> replaced the factory shocks with Rancho 5000's. Now the ride is so
> rough my
> fillings are falling out. I know the factory springs have hunkered
> down a
> bit, I've ordered new springs with a progressive spring rate. But that
> will
> only help if the factory springs had progressive rates to begin with
> which I
> doubt. I'm considering removing one of the front shocks from each
> side.
> Which should I remove, the front most or the rear most. Is there
> something
> else I should be looking at besides springs and shocks? The ride was
> fine
> before I changed to the 5000s. My kidneys are hateing me right now.
> My
> wife won't even ride in the truck. Help?
>
> W

You have too many shocks, there.
Dual shock setups are *not* to provide *better shock absorption*, but
rather to allow the shock absorption to be spread out over more units,
so that each individual unit won't heat up as much (heat lessens the
shock's usefulness). This way, you will still have shocks after a hard
run.
On multi-shock setups, each shock is designed so that the entire set (on
each side) provides the proper shock action, yet spreads the heat among
more than one unit.
On other words, in a two-shock per side setup, each shock only provides
half the shock absorption of a regular shock. When you replace the stock
shocks with single-set shocks (like the 5000's), you get way too stiff a
ride. You need to specify that the shocks will go in a multiple shock
setup.
Or, remove one of the 5000's per side. On a solid axle setup like
your's, I'd recommend one front on one side, and one rear on the other.
Good luck!
Bill

------------------------------

Date: Mon, 2 Mar 1998 08:46:27 -0500
From: "Chapman, David P"
Subject: Pinging and Engine Temp

Hey everyone,

I have a 95 Bronco with the 302. The engine pings under moderate to
heavy acceleration and it seems to be worse once the truck has been
driven a little while. I've been using 89 octane gas from Mobil and
Sunoco but it doesn't make a difference. One dealer wanted to clean out
the whole fuel system, cylinders, valves, etc. I think he just wants my
money. Another said the timing chain may be skipping (I highly doubt
this one - but then I'm no "expert"), the timing may be off, or a sensor
may be bad. I also noticed that the engine temp. is low (according to
the gauge). Could this be related to the pinging? Any ideas on what
how to solve this one?

Dave

------------------------------

Date: Mon, 2 Mar 1998 08:55:03 -0500
From: JHCHAMBE am.pnu.com
Subject: Front rotors on 95 Aerostar (electronic all wheel drive)

I'm not sure this question pertains to the subjects discussed on
this list, but here goes:

I own a 94 Ranger (two wheel drive) and a 95 Aerostar (electronic
all wheel drive). Recently, I picked up a Haynes manual for the
Ranger, but could not find one for the all wheel drive Aerostar.
I was checking the front brakes on the Aerostar and realize that
I will need to have the rotors turned due to some slight grooves.
In the Haynes manual for the Ranger, they cover how to remove and
replace the rotors,etc on the 4WD Ranger. The photos and
description look just like what I see on the all-wheel Aerostar.
Does anyone know whether the front rotors on the all wheel drive
Aerostar are the same as the 4WD Ranger? I am generally just a
routine maintenance type (oil changes, spark plugs, etc) but have
done some re-packing of front bearings for about 5 years on our
rear wheel vehicles with the help of my father.

Thanks for any advice,

Jamie

------------------------------

Date: Mon, 2 Mar 1998 09:13:47 EST
From: Iguannna
Subject: Re: 88 rear abs

In a message dated 3/2/98 5:51:17 AM Eastern Standard Time, owner-
fordtrucks80up-digest ListService.net writes:

> Vie got a 88 f150 and the rear abs light is always on. I just changed
> my rear
> diff replacing it with a used and when i did that it worked for a while.

Did you remember to put the excitor ring back on the ring gear? I put a 4.10
trac-loc in my '92 Ranger and was so excited about it all I forgot to put that
ring on. Spent a bunch of time trying to clean connections and hunt the
problem down. Then I had a vision. I ran into the basment and dug up the old
carrier and there was the excitor ring staring at me laughing. Oh well I may
not have ABS anymore but I will trade the ability to do doughnuts for that any
day, winter driving is so much fun. God bless rear-wheel drive!

------------------------------

Date: Mon, 2 Mar 1998 08:23:02 -0600
From: John Cassis
Subject: Pinging and engine temp.

David,
When I run the lower grade gas in my ranger I get the pinging to, I =
found I dont get it when I run premium. Now dont flame me on that but =
seems that would be worth a try. That or you could check your timing.

John Cassis
93' STX 4x4 3.0/5-speed

------------------------------

Date: Mon, 2 Mar 1998 09:37:13 EST
From: JDavis1277
Subject: Re: F-250 Brake Problems

Watt,
I had a very similar problem with my 90 F-250 HD 2WD. My problems were all in
the right front caliper. Had 3 failures with the caliper not fully releasing
and causing serious overheating. Had extended warranty and first 2 times
dealer rebuilt calipers, replaced pads, and turned rotors. Standard Ford
Factory Authorized Solution. Obviously since it happened a third time, that
was not a good solution. The 3rd time was on my dime so I told the dealer to
replace the caliper and pads, replace both front brake hoses, and flush and
refill system with new fluid. So far so good. I was pretty upset, so
reported the problem to NHTSA. They assigned it Ref # 523046. I think the
problem deserves a recall because it is very widespread. Please contact NHTSA
about your problem. One last item, make sure the brake caliper slide rails
are properly lubricated at the minimum interval. I suspect they may play a
part in these common failures. Good luck, Butch Davis-

------------------------------

Date: Mon, 2 Mar 1998 09:44:00 -0500
From: "Musolino, John"
Subject: RE: fuel economy

A few months back the car column in my newspaper printed a letter from
someone wondering why he was getting such poor mileage from his Chevy
Suburban - only about 10-12 mpg. As politely as he could, the guy who
answers the questions basically called him an idiot - "You have a heavy
truck, with poor aerodynamics, 4 wheel drive & a 5.8L engine - I think
you're getting average mileage".

Moose

----------
From: fordtrucks80up[SMTP:fordtrucks80up ListService.net]
Sent: Saturday, February 28, 1998 04:11 PM
To: fordtrucks80up
Subject: Re: fordtrucks80up-digest V2 #77

is that comment about the fuel economy directed to somebody specific or
just
in general??



+--------------- Ford Truck Enthusiasts - 1980 - 1996 ----------------+
| Send posts to fordtrucks80up listservice.net, |
| List removal instructions on the website. |
+----------------- Site: http://www.ford-trucks.com -----------------+

------------------------------

Date: Mon, 2 Mar 1998 09:56:59 EST
From: Dave Send
Subject: exhaust system for a 89 Ford Bronco

Thanks for the info and the welcome. Most appreciated. As it turns out, I got
a little burt on my 89 Ford (I paid $6,000). I have a Wynns (third party)
warrenty, and the trani started to slip on me when it was cold. I took it to a
reputable place and they are in the proccess of replacing the trani,
differentials, flywheel (I didnt know that they could go bad!!), u-joints,
motor mounts, and trani mounts!!!! Whew! Fortunatly, most of this is being
covered by the warrenty, I have to pay 800 towards the job because it is over
the $2,000 per claim limit and some of the stuff isnt covered. But, I have a
new drivetrain so...
Now, can anyone descripe to me the best exhaust system that I could put
in for it? I have a catalog with alot of individual parts, but I dont know
about alot of this stuff and I want to do it once, and do it right. Needless
to say I wont be installing it myself, but i want to know what to order. I
figure to put in headers (do they really add performance?), but I dont know
what kind are best. Nor do I know about mufflers, or catalytic converters
either. Hey, if they had decent public transportation in L.A. I would take
it, but they dont, so I got a big truck!!!!!! I am in your hands guys, so I
look forward to your advice and expertise!! Thanks Dave :>)

------------------------------

Date: Mon, 02 Mar 1998 09:02:30 -0600
From: "Beaman, James"
Subject: RE: exhaust

Randall Wer wrote:

> I was wondering what kind of muffler shops would stock a flowmaster
> muffler. A national chain like Midas, or would a local shop be a better
> bet?
>
I know some if not all Meinekes stock and install Flowmaster.

James Beaman
james.beaman lmco.com
Houston, Texas

------------------------------

Date: Mon, 2 Mar 1998 10:17:40 -0500
From: Jason DiSalvo
Subject: Re: Pinging and engine temp.

I had the same problem. Took it to ford and replaced EGR valve. That seemed
to to the trick for me.


>David,
>When I run the lower grade gas in my ranger I get the pinging to, I found
>I dont get it when I run premium. Now dont flame me on that but seems that
>would be worth a try. That or you could check your timing.
>
>John Cassis
>93' STX 4x4 3.0/5-speed
>
>+--------------- Ford Truck Enthusiasts - 1980 - 1996 ----------------+
>| Send posts to fordtrucks80up listservice.net, |
>| List removal instructions on the website. |
>+----------------- Site: http://www.ford-trucks.com -----------------+

------------------------------

Date: Mon, 2 Mar 1998 09:17:22 -0800
From: "David Krasko"
Subject: CDR valve 7.3L Diesel

Is there a way of testing a CDR valve to see if it needs replaced.

------------------------------

Date: Mon, 2 Mar 1998 10:40:43 EST
From: WindWaiver
Subject: backfire problem

In a message dated 98-03-01 05:53:09 EST, you write:

>
I have an 85 f250 5.8L w/ auto trans that has a backfire problem, when i
decelerate i get a fire out of the exhaust, small pop only when i run it above
about 1700 rpm, if i let off slowly it doesn't do it. About ready to take it
to the ford house and let them attempt the repair.

------------------------------

Date: Mon, 2 Mar 1998 11:03:06 -0500
From: "Chapman, David P"
Subject: RE: Pinging and engine temp.

EGR valve...hmmm...did they tell you how that would correct the problem?

> -----Original Message-----
> From:Jason DiSalvo [SMTP:disalvo tco.com]
> Sent:Monday, March 02, 1998 10:18 AM
> To:fordtrucks80up ListService.net
> Subject:Re: Pinging and engine temp.
>
> I had the same problem. Took it to ford and replaced EGR valve. That
> seemed
> to to the trick for me.
>
>
> >David,
> >When I run the lower grade gas in my ranger I get the pinging to, I
> found
> >I dont get it when I run premium. Now dont flame me on that but seems
> that
> >would be worth a try. That or you could check your timing.
> >
> >John Cassis
> >93' STX 4x4 3.0/5-speed
> >
> >+--------------- Ford Truck Enthusiasts - 1980 - 1996
> ----------------+
> >| Send posts to fordtrucks80up listservice.net,
> |
> >| List removal instructions on the website.
> |
> >+----------------- Site: http://www.ford-trucks.com
> -----------------+
>
>
>
> +--------------- Ford Truck Enthusiasts - 1980 - 1996
> ----------------+
> | Send posts to fordtrucks80up listservice.net,
> |
> | List removal instructions on the website.
> |
> +----------------- Site: http://www.ford-trucks.com
> -----------------+

------------------------------

Date: Mon, 2 Mar 1998 09:51:59 -0500
From: "Chapman, David P"
Subject: RE: Pinging and engine temp.

John - yeah, a couple of people have said try premium. But the truck
should run on 87 octane according to the manual. I hate to spend the
money on the premium when it shouldn't be needed. I had a 95 F150 4X4
302 and had absolutely no problems with it and I ran 87 all the time. I
will check the timing though, just haven't gotten to it yet.
And no flaming from here - just thanks for the reply.

Dave

> ----------
> From: John Cassis[SMTP:cassis uei-houston.com]
> Reply To: fordtrucks80up ListService.net
> Sent: Monday, March 02, 1998 9:23 AM
> To: 'Ford Trucks 80 & Up'
> Subject: Pinging and engine temp.
>
> David,
> When I run the lower grade gas in my ranger I get the pinging to, I
> found I dont get it when I run premium. Now dont flame me on that but
> seems that would be worth a try. That or you could check your timing.
>
> John Cassis
> 93' STX 4x4 3.0/5-speed
>
> +--------------- Ford Truck Enthusiasts - 1980 - 1996
> ----------------+
> | Send posts to fordtrucks80up listservice.net,
> |
> | List removal instructions on the website.
> |
> +----------------- Site: http://www.ford-trucks.com
> -----------------+
>

------------------------------

Date: Mon, 02 Mar 1998 10:02:57 -0600
From: "David J. Baldwin"
Subject: Re: 82 van engine swap

> Docmi5 wrote:
> >
> > I have a 82 econoline van with a 4.9L inline six engine.
> > Can I change this to say a 302? If so where can I get info on motor mounts
> > etc.


If you're going to swap, go to a 351. I have a 5.0 (302) and my neighbor had
the 300 six (both are F-150s). Mine revs well, but I do believe (sorry, no dyno
results--just seat of the pants feel) his six had more low-end torque than my
5.0L!

If I'm doing a swap, it's going to be a 351. That one has much more useful
torque where you need it in a big vehicle: on the low end.

I wouldn't think the swap would be too difficult. If you're doing away with the
existing engine management stuff (on an 82, probably a good idea) it should be
cake with a good donor vehicle to pull parts off of. Maybe you can find a parts
car with a 351 (assuming they put 351's in Econolines--maybe they had 400M
motors, too. That might be a good one).
Just be careful if you have to pass emissions testing.

- --
Best Regards,

Dave Baldwin
Dallas, TX
- --------------------------------------------------------------

------------------------------

Date: Mon, 2 Mar 1998 11:27:00 -0500
From: Mike Johnson
Subject: CARB ICING

I have an 86 F150 with the 300-6, It has a 500 cfm 4bbl carb
on it and a header. the air cleaner is an open element style.
On cold moist days my carb ices up while driving. It never
did this when I had a 390 cfm 4bbl. Is it because if the increased
air flow? What can I do to fix the problem. If I get the air cleaner
housing from a ford 4bbl pickup how could I hook up a heat shield
to make this work with the 6 cylinder header? Do you think this
would fix the problem?
I drive from Lansing to Detroit twice a week (75 miles one way)
and the last couple of weeks its been doing it an awful lot.
It turns an hour long drive into a two hour one.

thanks for any advise,
mike
mikej granger-co.com

------------------------------

Date: Mon, 2 Mar 1998 11:22:12 EST
From: JSC721
Subject: Re: exhaust

what i did was get out the yellow pages and call some muffler shops, get the
best price and ask them what kind of mufflers they have.

joe

------------------------------

Date: Mon, 02 Mar 1998 11:32:46 -0500
From: Chad Royse
Subject: Re: Pinging and engine temp.

I have to agree with John. I would try some 90 or 92 octane fuel or perhaps retard your ignition a few degrees. True pre-ignition knock is caused by high compression, too advanced ignition, low octane fuel,
and excessive heat. So I don't see how a lot of those dealer inspired causes could apply (valves, cylinders??). If your timing chain was off by a tooth or more, you'd have no doubts about it, and the symptoms
would be more like back firing through the intake as opposed to pinging/knocking.

Good luck,
Chad

John Cassis wrote:

> David,
> When I run the lower grade gas in my ranger I get the pinging to, I found I dont get it when I run premium. Now dont flame me on that but seems that would be worth a try. That or you could check your timing.
>
> John Cassis
> 93' STX 4x4 3.0/5-speed
>
> +--------------- Ford Truck Enthusiasts - 1980 - 1996 ----------------+
> | Send posts to fordtrucks80up listservice.net, |
> | List removal instructions on the website. |
> +----------------- Site: http://www.ford-trucks.com -----------------+

------------------------------

Date: Mon, 2 Mar 1998 10:22:28 -0600
From: John Cassis
Subject: Pinging & engine temp.

David,=20
A little correction for mine. I started running premium from the first =
tank I put in the truck. I get the pinging when I go to the floor with =
it towing when not using premium. So could be my computer is used to the =
higher octane and doesnt like it when I try to change.

Most of you guys probly dont care but I have to brag. I am totaly stoked =
on my truck after yesterday. I took it off-roading on Matagorta Penisula =
here in Texas. Havent been off-raoding much lately. The truck did great =
went 26 miles to the end of the peninsula and back. Some of the terrain =
is pretty tuff - real deap sand and lots of debris. Anyway 52 total =
miles on the beach without a problem (and NO I dont ride on the dunes - =
I tread lightly). If you've ever been there you know it no cake walk. =
Anyway just had to brag. Days like yesterday remind me why I bought a =
4x4 and what I love about them, the ability to go some where most cant =
with a 2x4. Anyway nuff said!

John Cassis
93' STX 4x4 3.0/5-speed

------------------------------

Date: Mon, 02 Mar 1998 11:45:14 -0500
From: Chad Royse
Subject: Re: backfire problem

Are you sure you want to fix that? It sounds pretty cool! I know people who paid
good money to set up a system like that on their Rods. :)

WindWaiver wrote:

> In a message dated 98-03-01 05:53:09 EST, you write:
>
> >
> I have an 85 f250 5.8L w/ auto trans that has a backfire problem, when i
> decelerate i get a fire out of the exhaust, >

------------------------------

Date: Mon, 2 Mar 1998 11:47:54 -0500
From: "Chapman, David P"
Subject: RE: Pinging and engine temp.

Chad,

That's kind of what my common sense was telling me on the timing chain,
but never having run into a "jumped timing chain", I wasn't sure.

One question no one has addressed is if the engine temperature could
have anything to do with it. The gauge is reading very low. I'm
guessing it doesn't, but one never knows if one doesn't ask.

Thanks Chad,
Dave

> -----Original Message-----
> From:Chad Royse [SMTP:chadlyr ix.netcom.com]
> Sent:Monday, March 02, 1998 11:33 AM
> To:fordtrucks80up ListService.net
> Subject:Re: Pinging and engine temp.
>
> I have to agree with John. I would try some 90 or 92 octane fuel or
> perhaps retard your ignition a few degrees. True pre-ignition knock
> is caused by high compression, too advanced ignition, low octane fuel,
> and excessive heat. So I don't see how a lot of those dealer
> inspired causes could apply (valves, cylinders??). If your timing
> chain was off by a tooth or more, you'd have no doubts about it, and
> the symptoms
> would be more like back firing through the intake as opposed to
> pinging/knocking.
>
> Good luck,
> Chad
>
> John Cassis wrote:
>
> > David,
> > When I run the lower grade gas in my ranger I get the pinging to, I
> found I dont get it when I run premium. Now dont flame me on that but
> seems that would be worth a try. That or you could check your timing.
> >
> > John Cassis
> > 93' STX 4x4 3.0/5-speed
>

------------------------------

Date: Mon, 2 Mar 1998 12:17:11 -0500
From: Jason DiSalvo
Subject: RE: Pinging and engine temp.

Said it had something to do woth not enough air/exhaust mixture in the
cylinder. So it seemed to do the trick. The truck dont ping anymore


>EGR valve...hmmm...did they tell you how that would correct the problem?
>
>> -----Original Message-----
>> From:Jason DiSalvo [SMTP:disalvo tco.com]
>> Sent:Monday, March 02, 1998 10:18 AM
>> To:fordtrucks80up ListService.net
>> Subject:Re: Pinging and engine temp.
>>
>> I had the same problem. Took it to ford and replaced EGR valve. That
>> seemed
>> to to the trick for me.
>>
>>
>> >David,
>> >When I run the lower grade gas in my ranger I get the pinging to, I
>> found
>> >I dont get it when I run premium. Now dont flame me on that but seems
>> that
>> >would be worth a try. That or you could check your timing.
>> >
>> >John Cassis
>> >93' STX 4x4 3.0/5-speed
>> >
>> >+--------------- Ford Truck Enthusiasts - 1980 - 1996
>> ----------------+
>> >| Send posts to fordtrucks80up listservice.net,
>> |
>> >| List removal instructions on the website.
>> |
>> >+----------------- Site: http://www.ford-trucks.com
>> -----------------+
>>
>>
>>
>> +--------------- Ford Truck Enthusiasts - 1980 - 1996
>> ----------------+
>> | Send posts to fordtrucks80up listservice.net,
>> |
>> | List removal instructions on the website.
>> |
>> +----------------- Site: http://www.ford-trucks.com
>> -----------------+
>+--------------- Ford Truck Enthusiasts - 1980 - 1996 ----------------+
>| Send posts to fordtrucks80up listservice.net, |
>| List removal instructions on the website. |
>+----------------- Site: http://www.ford-trucks.com -----------------+

------------------------------

Date: Mon, 2 Mar 1998 12:20:02 -0500
From: Jason DiSalvo
Subject: Selling my F150

http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.autoweb.com/awi-bin/ucdisp/ucdisp.awi?uc=281206&zip=10920

If anyone want to buy an F150, check out this link.

------------------------------

Date: Mon, 02 Mar 1998 11:16:38 -0600
From: "curtis miller"
Subject: Re: backfire problem

WindWaiver wrote:

> In a message dated 98-03-01 05:53:09 EST, you write:
>
> >
> I have an 85 f250 5.8L w/ auto trans that has a backfire problem, when i
> decelerate i get a fire out of the exhaust, small pop only when i run it above
> about 1700 rpm, if i let off slowly it doesn't do it. About ready to take it
> to the ford house and let them attempt the repair.
> +--------------- Ford Truck Enthusiasts - 1980 - 1996 ----------------+
> | Send posts to fordtrucks80up listservice.net, |
> | List removal instructions on the website. |
> +----------------- Site: http://www.ford-trucks.com -----------------+

Sounds like the heads to me.

------------------------------

Date: Mon, 2 Mar 1998 12:22:41 -0700
From: "Dave Resch"
Subject: Re: Two shocks too many?

>From: "Posluszny, Walt (posl)"
>Subject: Two shocks too many?
>
>I've got an 85 F150 4x4 with the factory quad front shock
>set-up. I've replaced the factory shocks with Rancho 5000's.
>Now the ride is so rough my fillings are falling out. I know the

Yo Walt:

On the F150s and FS Broncos w/ quad front shocks, those shocks are designed
to produce about half the normal rebound damping, so that when combined,
they don't rattle your teeth out.

A shock absorber works on a principle similar to a brake, it converts
motion (i.e., kinetic energy) to heat. The purpose of the quad shocks is
to allow more heat transfer than a conventional setup w/ one shock per
side. However, the shocks used w/ a quad setup are specially designed for
that application. You probably got the wrong shocks for your application.

Also, if you have problems getting them exchanged w/ the shop that sold you
the shocks, check w/ the manufacturer. Sometimes, the shops have incorrect
parts reference information.

Good luck

Dave R. (M-block devotee)

------------------------------

Date: Mon, 2 Mar 1998 12:35:10 -0800
From: Mark Ponsford
Subject: Re: backfire problem

>In a message dated 98-03-01 05:53:09 EST, you write:
>
>>
>I have an 85 f250 5.8L w/ auto trans that has a backfire problem, when i
>decelerate i get a fire out of the exhaust, small pop only when i run it above
>about 1700 rpm, if i let off slowly it doesn't do it. About ready to take it
>to the ford house and let them attempt the repair.

Maybe a loose or cracked exhaust manifold?


- -------------------------------------------------------------------------
Mark Ponsford
Phone: (250) 721-7397 Email: mponsfor uvic.ca

------------------------------

Date: Mon, 02 Mar 1998 16:18:11 -0500
From: Ken Payne
Subject: Re: backfire problem

At 10:40 AM 3/2/98 EST, you wrote:
>In a message dated 98-03-01 05:53:09 EST, you write:
>
>>
>I have an 85 f250 5.8L w/ auto trans that has a backfire problem, when i
>decelerate i get a fire out of the exhaust, small pop only when i run it
above
>about 1700 rpm, if i let off slowly it doesn't do it. About ready to take it
>to the ford house and let them attempt the repair.

Fire, as in "flames"? If that's the case, you're getting unburnt
gas in the exhaust system. Cause... I've seen a burnt exhaust
valve cause it. Running too rich can cause it too.

If it were a cracked manifold or other exhaust leak the effect would be
just the opposite, you'd hear it when giving it gas...
tttthhhhhhppptttt tttthhhhppppptttt

Exhaust leak noises tend to fade as RPM goes up. Try a compression
test and check the condition of each spark plug. Any shop manual has
spark plug charts.

------------------------------

Date: Mon, 02 Mar 1998 14:06:08 -0800
From: Joe Zuk
Subject: Re: fordtrucks80up-digest V2 #77

Hi,
I test drove a V10 Super Duty yesterday and I noticed that it had a small strange
vibration around 30mph, I know that it wasn't caused by the road since it happen 2
times on different road. Has anyone else driven one of these yet? Have you notice
this vibration? Or is there something wrong with this truck? Anyone got any ideas
about the cause of the vibration?

Thanks,
Joe

------------------------------....

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