Engine help please
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Senior User
Joined: Jul 2004
Posts: 180
Likes: 1
From: st.petersburg, fl
Engine help please
I have a 2000 7.3 psd 126000 miles . 2 weeks ago I posted here about the engine running rough. It cleared up and then started acting up again. I took it to a diesel repair shop and they can`t figure it out. Here are the symptoms. Truck starts up rough with eratic idle for about 10 seconds then settles down. The next mile of driving is like a gas engine with a fouled plug, after a mile it runs normal untill it is shut down and then it starts all over again. The mechanic found fuel laying in the manifold between the heads, he wiped it up and said it was the o-ring on the fuel filter but that wasn`t it obviously. Any help would be greatly appreciated. Thanks Ron
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
Likes: 2
From: Concord NC
More likely, the fuel came from the fuel drain valve orings (replacement part available from Diesel 0 ring.com. Link in sig) It would have to be a bad leak to affect engine, unless bowl is draining while setting, then air gets in fuel rails and clears after a short drive. Hmm, could be. Check and see if you are still getting fuel in valley of engine.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
The drain valve o-rings are the most common source of a fuel leak unless you just changed the fuel filter and the seal there didn't seat right.
When your truck acts up, does the check engine light come on? How old is your engine oil? Is it full? What type of oil are you using?
When your truck acts up, does the check engine light come on? How old is your engine oil? Is it full? What type of oil are you using?
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
Likes: 2
From: Concord NC
Check for signs of more fuel on top of the engine, follow this link, http://www.guzzle7pt3.com/fdrain.php and fix that problem, then see what happens.
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Senior User
Joined: Jul 2004
Posts: 180
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From: st.petersburg, fl
There is a very small ( maybe a teaspoon) amount present, but I do not know if the mechanic got 100% of it when he worked on it. Also it doesn`t do it all the time . It`s driving me nuts. Thanks
Posting Guru
Joined: Feb 2007
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From: North Cackalacky
Have you checked the uvch? When mine acted up it would run rough, die then start right back up and be ok till the next time I started it.
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Posting Guru
Joined: Apr 2009
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From: Northern Idaho
Yea, sounds about right to be, either air in the fuel rails or loose UVCH. I pulled my valve covers off today just to do the quarter mod and torque things down so I don't end up in situations like this. No offense, just planning ahead and trying my darnedest to learn from these great group of peeps.
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Posting Guru
Joined: Feb 2007
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From: North Cackalacky
check out this thread: https://www.ford-trucks.com/forums/8...ml#post7630914
Pay attention to the harness where it is coming disconnected.
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Senior User
Joined: Jul 2004
Posts: 180
Likes: 1
From: st.petersburg, fl
The engine has been running fine today since I filled the tank. Everytime it ran rough the fuel level was slightly below an eighth of a tank. I don`t know if this is coincidence or not.
Go Bills !
Joined: Jan 2008
Posts: 2,778
Likes: 65
From: Buffalo, NY
Wondering if you screens are clogged in your tank. Below an 1/8 of a tank? If i hit a 1/4 i panic. The last 1/8 could be all diesel foam shake ..
Good write up on the tank mod. http://www.guzzle7pt3.com/hutch.php
Screens in tank
Good write up on the tank mod. http://www.guzzle7pt3.com/hutch.php
Screens in tank
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