1990 351w
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1990 351w
1990 f150 with 351w running really rough with no power... I pulled the plugs and two of them are really wet and have gas dripping off of them???At the last race the muffler on that side fell off, could that have messed something up?? and the motor smokes really bad only out of the muffler on that side...
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Elder User
Joined: Dec 2006
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From: Hillsboro, OR
Welcome to the site. You will find a lot of knowledge here. I realy doubt the muffler would cause this issue. First off, you should see if any codes are stored. A compression check and a fuel pressure check should be at the top of your list. It sounds like you are either getting too much fuel (bad regulator) or are burning oil. I would suspect the regulator first. I had the same problem until I replaced mine. Hope this helps.
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
Start with the basics. Do a compression check and test and/or replace the plugs, wires, cap and rotor. If you are getting a healthy spark on all cylinders then you may want to look at the fuel system
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
Are these 2 wet plugs firing at all? Pull the plug wire off, stuff another plug in and touch it on the block while the motor is cranked. If they do fire then you may have injectors stuck open on those cylinders, or damaged pistons that don't build any compression. What was the thing about racing anyway?
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FTE Legend
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FTE Legend
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From: Ottawa, Ontario
If the FPR was leaking and dumping fuel into the intake via the vacuum lines there's no reason to think it would restrict itself to just 2 cylinders on one bank, it would cover both banks equally.
Fleet Owner
Joined: Aug 2005
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From: Easton,Ks
Originally Posted by Conanski
If the FPR was leaking and dumping fuel into the intake via the vacuum lines there's no reason to think it would restrict itself to just 2 cylinders on one bank, it would cover both banks equally.
