not starting
Thread Starter
|
Senior User
Joined: Apr 2011
Posts: 189
Likes: 0
not starting
i have an 86 f250d 4x4.........heres the story.I changed out the fuel selector valve with a universal one.I know i didnt get the wires hooked up properly...but it ran.I Needed the truck and since it ran good i drove it out about 5 miles with no issues.Stopped and started it a few times...(.it was hard to start...it normally is for the first time).Then in the process of driving it in the field it just died and will not start.I have new glow plugs and i live in texas so i dont think its that.
i am about to go pour a little diesel in the carb and see what happens.Also i am going to correct the wires(didnt think it was that since it ran good)Thought maybe my fuel pump went out...my fuel pressure guage is the kind that you screw on (modern stuff) and i dont even know what type of pressure it has.Ive never really got the truck past working the bugs out stage yet and its my first diesel.I wasnt sure what all i was overlooking...........any ideas/pointers etc is appreciated.
i am about to go pour a little diesel in the carb and see what happens.Also i am going to correct the wires(didnt think it was that since it ran good)Thought maybe my fuel pump went out...my fuel pressure guage is the kind that you screw on (modern stuff) and i dont even know what type of pressure it has.Ive never really got the truck past working the bugs out stage yet and its my first diesel.I wasnt sure what all i was overlooking...........any ideas/pointers etc is appreciated.
Mountain Pass
Joined: Sep 2010
Posts: 137
Likes: 0
hold on, Dont' pour diesel in where the air cleaner is. That is a trick only for the pre fuel injected gassers. You don't have a carberator. Diesel will only ignite with the proper spray from the injectors.
Here is a good place to start.
Does your engine turn over fast enough that you can't count the revolutions?
Do you have fuel at the shrader valve (the tire valve looking thing on the top of the fuel filter)?
Here is a good place to start.
Does your engine turn over fast enough that you can't count the revolutions?
Do you have fuel at the shrader valve (the tire valve looking thing on the top of the fuel filter)?
Senior User
Joined: Jun 2010
Posts: 192
Likes: 0
From: Tennessee
From the way you speak it could be a fuel dilevery issue, but Air intrusion on the fuel return lines is very common on these trucks and can strike at anytime as it did me recently. The return lines are the neoprene rubber lines/hose or whatever material it may be, runs between each injector, NOT the steel lines. There are little plastic caps over each injector with 2 O-rings on each injector. They have a common problem of eventually letting air and will cause a lot of wear on your starter if you purge the air out with it everytime. How long did the truck sit not running when you parked it? And did you get it started when you came back out? If so, how long did it take it to start? Did the engine sound like it was turning over normally with starter?
: do Not pour diesel into your air intake lol
: do Not pour diesel into your air intake lol
Thread Starter
|
Senior User
Joined: Apr 2011
Posts: 189
Likes: 0
well....i didnt see these post til now....I went back out to the truck and i poured some diesel in the carb.(its a carb to me 
) and it fired right up,maintained an idle and from then on started back up easily.I did some brush work that i was doing...starting stopping,pulling cut limbs/logs etc.....i never had anymore problems out of it.
It did set up for about a month even a little longer.
As far as the schrader valve i honestly didnt even know that i had one....Thats why i didnt bother getting my fuel pressure guage out because i didnt have a way to connect the lines...or so i thought.
When i bought this truck the lines to the injectors leaked.....I replaced the lines and the o rings.If it ran then i cant imagine them causing a problem now.
There would have been air in the lines(replaced the selector valve.I cut the hard plastic lines and connected it with fuel hose) but i assumed that it would have worked itself out driving the 5 miles.
) and it fired right up,maintained an idle and from then on started back up easily.I did some brush work that i was doing...starting stopping,pulling cut limbs/logs etc.....i never had anymore problems out of it.It did set up for about a month even a little longer.
As far as the schrader valve i honestly didnt even know that i had one....Thats why i didnt bother getting my fuel pressure guage out because i didnt have a way to connect the lines...or so i thought.
When i bought this truck the lines to the injectors leaked.....I replaced the lines and the o rings.If it ran then i cant imagine them causing a problem now.
There would have been air in the lines(replaced the selector valve.I cut the hard plastic lines and connected it with fuel hose) but i assumed that it would have worked itself out driving the 5 miles.
Posting Guru
Joined: Jan 2010
Posts: 1,665
Likes: 4
From: Terre Haute, IN
The smallest leak will cause you problems. One place to check is the return line caps. Its a common area for air to sneak in.
Another big one for our 80's models is the water separator on the firewall. Its commonly suggested to bypass it. Mine is bypassed and i havent experienced any ill effects....
YMMV
Another big one for our 80's models is the water separator on the firewall. Its commonly suggested to bypass it. Mine is bypassed and i havent experienced any ill effects....
YMMV
Thread Starter
|
Senior User
Joined: Apr 2011
Posts: 189
Likes: 0
the water separator has been by passed.I was debating if i needed to fix it.
I will check around the return lines(assuming thats under the hood and what connects to the injectors...should be a very snug fit but will check on it.
Do these things have a choke? or an accelerator pump of some type?-----i would go and look but i had to leave the truck at the other location.
I will check around the return lines(assuming thats under the hood and what connects to the injectors...should be a very snug fit but will check on it.
Do these things have a choke? or an accelerator pump of some type?-----i would go and look but i had to leave the truck at the other location.
Laughing Gas
Joined: Sep 2007
Posts: 871
Likes: 5
From: Near Shenandoah Valley
No, no Choke. There is no accelerator pump. You have an Inj. Pump. and a, I call it a high idle solenoid on that for fast idle when cold. But air has been a serious issue at times, and as the others guys said, get new caps, O rings, hose and bypass the water separator.
Trending Topics
Laughing Gas
Joined: Aug 2003
Posts: 919
Likes: 4
From: Newberg Oregon
the water separator has been by passed.I was debating if i needed to fix it.
I will check around the return lines(assuming thats under the hood and what connects to the injectors...should be a very snug fit but will check on it.
Do these things have a choke? or an accelerator pump of some type?-----i would go and look but i had to leave the truck at the other location.
I will check around the return lines(assuming thats under the hood and what connects to the injectors...should be a very snug fit but will check on it.
Do these things have a choke? or an accelerator pump of some type?-----i would go and look but i had to leave the truck at the other location.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
New User
Joined: Jun 2011
Posts: 4
Likes: 0
From: alberta canada
ive been playin with my first diesel to its a 94 7.3idi turbo. i found wen i changed the fuel filter i had to loosen each injecter one at a time until fuel was leaking out of the line. as for the valve selector i put a new one in mine and cant get fuel from the reartank any ideas.
Fleet Owner
Joined: Jul 2006
Posts: 20,389
Likes: 850
From: Mi'kma'ki
f250d4x4,
the idi is fuel injected.indirectly yes.but still injected non the less.you need to stop thinking carburetor,to properly diagnose issues.
Ryedogg,
what did you replace the FSV with? factory replacement from ford or aftermarket?
did the rear tank work previously during your ownership?
the idi is fuel injected.indirectly yes.but still injected non the less.you need to stop thinking carburetor,to properly diagnose issues.
Ryedogg,
what did you replace the FSV with? factory replacement from ford or aftermarket?
did the rear tank work previously during your ownership?
Laughing Gas
Joined: Sep 2007
Posts: 871
Likes: 5
From: Near Shenandoah Valley
Always pre-fill any filter that screws on in a vertical-threads up-position. Oil, fuel etc. If it is not sucking air somewhere, you can spin filter off, fill and spin back on with no bleeding at lines. I have done a few. If the low pressure lines/o rings are causing a leak off you may have to bleed inj. lines on filter swap.
Thread
Thread Starter
Forum
Replies
Last Post
sharpblades
1999 - 2003 7.3L Power Stroke Diesel
29
Sep 17, 2013 06:07 AM
f250d4x4
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
7
Jan 6, 2012 08:18 PM
killthe6.0forddiesel
1994.5 - 1997 7.3L Power Stroke Diesel
12
Dec 13, 2011 02:46 PM
jga2z
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
7
Oct 31, 2010 11:38 PM
