Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
Sign in using an external account
Register Forgot Password?


1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 10-04-2011, 01:35 AM
81fordf150ranger 81fordf150ranger is offline
New User
 
Join Date: Oct 2011
Posts: 20
81fordf150ranger is starting off with a positive reputation.
81 ford f150 ranger 351 winsor poor power and gas mileage

i have a 1981 ford f150 ranger 4x4 with a 351 winsor 2 barrel in it... just recently got it running again after replacing the electric fuel pump in the tank.. but it doesnt seem to have the power it should.. tires wont spin, very slow take off, and your lucky if u can get it up to 65 mph.. idles good, and runs good when driving besides the bad gas mileage (about 4 mpg) and the power loss.. any ideas of what could be causing this problem? any help would be greatly appreciated..
Reply With Quote
  #2  
Old 10-04-2011, 02:35 AM
Ken Blythen's Avatar
Ken Blythen Ken Blythen is offline
Posting Guru
 
Join Date: Aug 2007
Location: New Zealand
Posts: 1,792
Ken Blythen has a good reputation on FTE.Ken Blythen has a good reputation on FTE.Ken Blythen has a good reputation on FTE.
How are the float level/fuel pressure, & carburetor generally?

Retarded timing will give very lifeless performance along with good starting/idling/running, but 4mpg sounds like carburetor issues.
__________________
1983 F250 XLT 2WD, 351W, T19, 3.54 D60
1942 GMC 6x4
Reply With Quote
  #3  
Old 10-04-2011, 07:22 AM
Fordzilla80's Avatar
Fordzilla80 Fordzilla80 is offline
Postmaster
 
Join Date: Jun 2008
Location: Belleview,Fl
Posts: 4,899
Fordzilla80 has a great reputation on FTE.Fordzilla80 has a great reputation on FTE.Fordzilla80 has a great reputation on FTE.Fordzilla80 has a great reputation on FTE.Fordzilla80 has a great reputation on FTE.Fordzilla80 has a great reputation on FTE.
Few things wrong here. One, the 351W wasn't offered until 1982. So I'm guessing you mean 351M. And two, F-Series trucks and Broncos didn't get electric in-tank fuel pumps until 1985 on the 302, 1987-1988 on the rest of the engine lineup.

Have you swapped motors in the truck and/or fuel tanks?
__________________
Shaun
1980 Ford F150 4x4 Ranger Lariat
-6.6 400 V8/C6/NP208/D44/Ford 9.
2003 Ford Ranger Edge+
-3.0 V6/M5OD-R1/Ford 8.8
Reply With Quote
  #4  
Old 10-04-2011, 09:53 AM
Gary Lewis's Avatar
Gary Lewis Gary Lewis is online now
FTE Chapter Leader
 
Join Date: Jul 2010
Location: Northeast, OK
Posts: 19,045
Gary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud of
Shaun - You beat me to it, but what else is new? Anyway, he's right - unless there's been some serious swapping, including transmission and gas tanks, it isn't likely that is a Windsor and it won't have an in-tank pump. So, before we diagnose too much let's make sure we know what we are working on because that'll probably make a difference in the solution.
__________________
Rusty: '81 F150 Ranger XLT 4x4 w/a 351M, RV cam, Performer carb & intake, C6, & 3.50's
Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads, Weiand intake, Street Demon 750/ZF5/3.50 gears w/Kevlar clutches
Worst fear: I die and my wife sells my trucks for what I've told her I have in them.
Reply With Quote
  #5  
Old 10-04-2011, 11:18 PM
81fordf150ranger 81fordf150ranger is offline
New User
 
Join Date: Oct 2011
Posts: 20
81fordf150ranger is starting off with a positive reputation.
the fuel pressure is pefect and all that. it idles great and runs great it just dont have much power... and the gas mileage is horrible.. havent redone the timeing.. didnt figure it was wrong since it idles and runs fine..and i was told the 2 barrel carburator is whats causing it.. in which i was goin to replace the carb and intake with a 4 barrel. which i dont have the money for right now. so i was goin to order a new holley 2 barrel and hope it fixed the problem. but then i dont want to to that and it not be the problem.. idk how the carburator is or its float levels.. i want to replace it with the holley 2 barrel but i dont want to do that and then find out i do need the 4 barrel.. what is ur opinion there? and no it has a 351W.. and it is the orginal tank, it has 2 tanks... in which only one is in working condition right now.. and no motor swap has been done or any of that..
Reply With Quote
  #6  
Old 10-04-2011, 11:32 PM
81fordf150ranger 81fordf150ranger is offline
New User
 
Join Date: Oct 2011
Posts: 20
81fordf150ranger is starting off with a positive reputation.
the way i was told to find out if it was a cleveland or a winsor was that if the ratiator hose runs into the intake then its a winsor.. if it doesnt then it is a cleveland. is this incorrect?
Reply With Quote
  #7  
Old 10-04-2011, 11:39 PM
81fordf150ranger 81fordf150ranger is offline
New User
 
Join Date: Oct 2011
Posts: 20
81fordf150ranger is starting off with a positive reputation.
sorry about all the replies but even autozone and oriellys tells me that the truck can come with a winsor
Reply With Quote
  #8  
Old 10-04-2011, 11:45 PM
81fordf150ranger 81fordf150ranger is offline
New User
 
Join Date: Oct 2011
Posts: 20
81fordf150ranger is starting off with a positive reputation.
the fuel pressure is pefect and all that. it idles great and runs great it just dont have much power... and the gas mileage is horrible.. havent redone the timeing.. didnt figure it was wrong since it idles and runs fine..and i was told the 2 barrel carburator is whats causing it.. in which i was goin to replace the carb and intake with a 4 barrel. which i dont have the money for right now. so i was goin to order a new holley 2 barrel and hope it fixed the problem. but then i dont want to to that and it not be the problem.. idk how the carburator is or its float levels.. i want to replace it with the holley 2 barrel but i dont want to do that and then find out i do need the 4 barrel.. what is ur opinion there?
Reply With Quote
  #9  
Old 10-05-2011, 03:26 AM
Ken Blythen's Avatar
Ken Blythen Ken Blythen is offline
Posting Guru
 
Join Date: Aug 2007
Location: New Zealand
Posts: 1,792
Ken Blythen has a good reputation on FTE.Ken Blythen has a good reputation on FTE.Ken Blythen has a good reputation on FTE.
I would eliminate some possibilities, one at a time. You may need a carb, but it's free to check the timing & then you can move to the next thing.

If you want to get running at minimum cost for now, your own carb may well be repairable for just a few dollars or adjustments.

Try to be methodical & pinpoint the problem, or too much money can be lost.
__________________
1983 F250 XLT 2WD, 351W, T19, 3.54 D60
1942 GMC 6x4
Reply With Quote
  #10  
Old 10-05-2011, 11:41 AM
81fordf150ranger 81fordf150ranger is offline
New User
 
Join Date: Oct 2011
Posts: 20
81fordf150ranger is starting off with a positive reputation.
ok. to redo the timing i have to have a timing light, correct? if so about how much do they run?
Reply With Quote
  #11  
Old 10-05-2011, 12:58 PM
Ken Blythen's Avatar
Ken Blythen Ken Blythen is offline
Posting Guru
 
Join Date: Aug 2007
Location: New Zealand
Posts: 1,792
Ken Blythen has a good reputation on FTE.Ken Blythen has a good reputation on FTE.Ken Blythen has a good reputation on FTE.
10-12 degrees btdc as a start, but depending on fuel, compression, your distributor, etc it varies - so I advance until there is a slight ping at full throttle/lower rpm, then retard JUST enough to stop the ping.
This will give you the best power & economy (as far as timing is concerned).


If you have a vacuum gauge on the truck, this setting should pretty much coincide with the highest vacuum reading.
And if you do have a 351w, turning the distributor clockwise ADVANCES the timing.
__________________
1983 F250 XLT 2WD, 351W, T19, 3.54 D60
1942 GMC 6x4
Reply With Quote
  #12  
Old 10-05-2011, 06:38 PM
Gary Lewis's Avatar
Gary Lewis Gary Lewis is online now
FTE Chapter Leader
 
Join Date: Jul 2010
Location: Northeast, OK
Posts: 19,045
Gary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud of
While Autozone and O'Reillys may say a 351W came in the '81s, it was the E series vans, not the F series pickups. I have the '81 factory shop manual and it indicates that the vans had Windsors and the pickups had the 351M.

So, how to tell? The Windsor's water outlet is through the manifold in the front, while I've read that the M's is just straight from the front top of the block. Another way is that the Windsor's valve cover has 6 bolts while, if I remember correctly, the M's has 8 - but at least it isn't 6.

I think you have a 351M. And, I hate to tell you but I personally don't think they have much power w/o modification. How do I know? My father has a 1981 F150 Ranger 4x4 with the 351M and I have a 1982 Explorer 4x2 with the 351W. I've driven them back to back and ........ (how to say this w/o offending someone....) stepping on the throttle on the M is like stepping on a dead toad in comparison to doing the same on the W. I know, that's not really fair since mine's 2wd and Dad's has the heavy transfer case. Trust me, there's far more difference than that would account for. Having said that, I dearly want Dad's truck when he's done with it, but that engine has to be fixed.

I say all that to say this - don't expect lots of power from a 351M. However, it should easily cruise at 65 - Dad's does. But, it won't spin the tires unless you are on sand, gravel, or snow. As for gas mileage, you should be getting close to 10 - Dad's does on the highway running 60 - 65 with 3.50 gears.

So, yours should be doing better. The first place to look is as Ken suggested, the timing. You will need a timing light. You can find the cost of one of those on-line. And, it would be good to have a vacuum gauge, which isn't expensive at all. Once you set the timing, check to see what vacuum you are getting at idle. You should be somewhere around 20" or maybe better. Then report back and we can help you from there.
__________________
Rusty: '81 F150 Ranger XLT 4x4 w/a 351M, RV cam, Performer carb & intake, C6, & 3.50's
Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads, Weiand intake, Street Demon 750/ZF5/3.50 gears w/Kevlar clutches
Worst fear: I die and my wife sells my trucks for what I've told her I have in them.
Reply With Quote
  #13  
Old 10-05-2011, 07:39 PM
Fordzilla80's Avatar
Fordzilla80 Fordzilla80 is offline
Postmaster
 
Join Date: Jun 2008
Location: Belleview,Fl
Posts: 4,899
Fordzilla80 has a great reputation on FTE.Fordzilla80 has a great reputation on FTE.Fordzilla80 has a great reputation on FTE.Fordzilla80 has a great reputation on FTE.Fordzilla80 has a great reputation on FTE.Fordzilla80 has a great reputation on FTE.
If your truck was built very late in the model year, such as April of 1981 or so, then there is a small chance that it could be a 351 W. However, as Gary suggested, the 351M uses a dry intake, while the 351W uses a wet intake. This is the easiest way to tell. Not to mention, the valve covers are entirely different between the two.

You can't trust what Autozone and O'Reilly's says, because they're not trained to know every little thing about every little vehicle.
__________________
Shaun
1980 Ford F150 4x4 Ranger Lariat
-6.6 400 V8/C6/NP208/D44/Ford 9.
2003 Ford Ranger Edge+
-3.0 V6/M5OD-R1/Ford 8.8
Reply With Quote
  #14  
Old 10-05-2011, 07:42 PM
ctubutis's Avatar
ctubutis ctubutis is offline
Moderator
 
Join Date: Nov 2007
Location: Denver Metro Area, CO
Posts: 15,535
ctubutis has a superb reputationctubutis has a superb reputationctubutis has a superb reputationctubutis has a superb reputationctubutis has a superb reputationctubutis has a superb reputationctubutis has a superb reputationctubutis has a superb reputationctubutis has a superb reputationctubutis has a superb reputationctubutis has a superb reputation
ctubutis ctubutis ctubutis
Quote:
Originally Posted by Gary Lewis View Post
So, how to tell? The Windsor's water outlet is through the manifold in the front, while I've read that the M's is just straight from the front top of the block. Another way is that the Windsor's valve cover has 6 bolts while, if I remember correctly, the M's has 8 - but at least it isn't 6.
Yes, 8 bolts on the 351M, 351C and 400 valve covers.

Another way to tell - the M will have two vertically-oriented bolts holding on the fuel pump, it's the only Ford engine to have that configuration.
__________________
About the bra
Microsoft is writing software for the kind of people who'd type google into the google search bar to get to google.
http://news.slashdot.org/comments.pl...7&cid=47003415
Reply With Quote
  #15  
Old 10-05-2011, 08:30 PM
Gary Lewis's Avatar
Gary Lewis Gary Lewis is online now
FTE Chapter Leader
 
Join Date: Jul 2010
Location: Northeast, OK
Posts: 19,045
Gary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud of
Speaking of Autozone and O'Reillys, you may be able to "rent" a timing light from them. The way their rental program works, at least O'Reillys, is that you pay for the tool but if you return it w/in 48 hours you get all your money back. I've used it several times for things like pulley pullers.
__________________
Rusty: '81 F150 Ranger XLT 4x4 w/a 351M, RV cam, Performer carb & intake, C6, & 3.50's
Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads, Weiand intake, Street Demon 750/ZF5/3.50 gears w/Kevlar clutches
Worst fear: I die and my wife sells my trucks for what I've told her I have in them.
Reply With Quote
Old 10-05-2011, 08:30 PM
 
 
 
Reply

Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks

Tags
1982, 351, barrel, block, f150, ford, gas, idles, milage, mileage, mpg, pick, power, ranger, small, starts, windsor

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
2007 F-150 FX2 Roushcharged! 2007stlFX2 Vehicles for Sale 2 02-22-2013 12:50 PM
Air In Fuel Lines HELPPPP 6.9 IDI seancrawford14 Pre-Power Stroke Diesel (7.3L IDI & 6.9L) 25 02-29-2012 10:09 AM
81 ford f150 ranger 351W power loss and poor gas mileage 81fordf150ranger 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 2 10-04-2011 10:13 AM
fuel regulator screen????? 65fordman125 1987 - 1996 F150 & Larger F-Series Trucks 0 06-30-2011 10:07 PM
This blinker mod really works!! muleguitar 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 26 01-04-2010 10:05 PM



All times are GMT -5. The time now is 08:52 AM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup