leaking injector
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Tuned
Joined: Oct 2020
Posts: 269
Likes: 25
leaking injector
Drove my F-450 to the pasture, pulling trailer with skidsteer, and it pulled the trailer very easily. Went to come home, started the truck and it started with a backfire, then was spraying gas out the exhaust. Thought at first it was a cracked gas line, but it went away after while. Huge smoke. Drove it on home, parked it and have not started it for 2 days. Called shop about fixing it. Said they guessed an injector could stick open. Do I dare hit the starter on this truck, or will it be locked up with a cylinder full of gas? V-10 '05 model.
Moderator
Joined: Aug 2002
Posts: 6,104
Likes: 384
From: Southern California
If it is a leaking injector, no, tow it.....because of several issues (hydrolock, fuel leaking past the pistons into the oil pan) all of which could likely lead to severe engine damage (bearing, pistons, etc.)
Fleet Owner
Joined: Jan 2004
Posts: 26,007
Likes: 575
From: Brentwood,CA
The same leaking injectors that were common on the 5.4 in 2004 and 2005 also are on the early build 3v v10 trucks. Do not attempt to crank it over with the plugs still in. Its a guarantee 💯 you will bend a rod. Plenty of people have done it, these rods bend very easily and its a costly repair after.
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Tuned
Joined: Oct 2020
Posts: 269
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So I hauled the F-450 to a shop, and the shop owner called today, said he had turned the engine by hand, and was not hydrolocked now, so started it up, drove it a few miles and the truck ran perfectly. He said he checked the codes, got a P1237, and checked the fuel pump driver module, and found the previous owner had replaced it. Said the problem will be hard to find unless it does it again. Any ideas?
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Tuned
Joined: Oct 2020
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The shop called again, found that the fuel pump had been wired to run at full pressure, 80 psi, so that is the reason for the original problem, he connected it correctly, said he had driven it several times, and the truck runs fine. Will pick up the truck Monday. Hope that is the end of this headache. Wonder why it was wired to run at full pressure in the first place?
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Tuned
Joined: Oct 2020
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The shop said these gas engines do not like to set, like in storage. They said put seafoam in it, and since adding the seafoam have had no more trouble other than having to replace the fuel pump. Starts quicker now, and seems to have more low speed power, so the pump has not been good since I got it.
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