7.3l problems
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Junior User
Joined: Mar 2008
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7.3l problems
guys, have a 2000 f250 super duty with a 5 spd and a 7.3.
my brother did some offroading in it when it was low on fuel and got stuck. it was skipping and farting when i got there. pulled it out and got it home. changed fuel filter, and it was really hard to start, woul dnot start unless you put pedal to floor then one it started let off, it idle real rough. we put a new inline fuel pump on it and it took along time for it to pull fuel from the tank. we also put a new cam sensor in it. it still starts very very hard and runs rough till its warm, ho wlong does it take to get air out of fuel system after changing inline fuel pump? is there any purge methods or anything?
i am thinking there may be an air leak in an injector line causing rough running/hard starting till its warm?? please let me know it does not seem to be throwing trouble codes.
we also replaced air filter, removed air filter, messing with this thing. please help
thanks
my brother did some offroading in it when it was low on fuel and got stuck. it was skipping and farting when i got there. pulled it out and got it home. changed fuel filter, and it was really hard to start, woul dnot start unless you put pedal to floor then one it started let off, it idle real rough. we put a new inline fuel pump on it and it took along time for it to pull fuel from the tank. we also put a new cam sensor in it. it still starts very very hard and runs rough till its warm, ho wlong does it take to get air out of fuel system after changing inline fuel pump? is there any purge methods or anything?
i am thinking there may be an air leak in an injector line causing rough running/hard starting till its warm?? please let me know it does not seem to be throwing trouble codes.
we also replaced air filter, removed air filter, messing with this thing. please help
thanks
Senior User
Joined: Nov 2007
Posts: 103
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From: Coon Rapids MN
it can take a while for air to pass most likely just needs to run a while id guess. unless something bad happenedthe fuel tank could have been damaged causing the pickup tube to be bent or somthing similar... causing lack of fuel pressure just a thought hope ya get er back runnin top notch
Fleet Mechanic
Joined: Feb 2005
Posts: 1,797
Likes: 1
From: Northern Colorado
If your fuel pump is having a hard time pulling fuel from the tank, I would suspicion that the mixing chamber screens in the tank are plugged.
Sounds like a good time to do the in-tank and harpoon mods to me.
Sounds like a good time to do the in-tank and harpoon mods to me.
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Junior User
Joined: Mar 2008
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if the screens were plugged in the tank, it woul dnot run better once warm would it?
i recently got an 06 crew cab ford f350 with a 6.0l in it so i am selling this one and just want to get it running nice.
can the screens or filter inthe tank just be cleaned and re-assembled?
p.s
how quick should a new pump, pick up fuel from the tank? we have tried 2 different new pumps, and truck has 150k miles on it
Elder User
Joined: Feb 2007
Posts: 637
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From: new west b.c
they would feel like a misfire or sluggish till the engines up to running temp am i wrong? i'm not 100% on that
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Elder User
Joined: Feb 2007
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From: new west b.c
it also sounds like a choke issue i'm not familiar with a diesel but i know that 351 carbed motor had the same issue and ended up being the auto choke, but yours sounds like it works just not at the correct time.
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Thread Starter
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Junior User
Joined: Mar 2008
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diesels do not have chokes, or ignitions etc
thanks for your help.
Cargo Master
Joined: Jun 2003
Posts: 3,292
Likes: 6
From: Ardenvoir, Washington
No choke on our engines...
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