351 runs like ****
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Freshman User
Joined: Nov 2003
Posts: 37
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351 runs like ****
Hello I have a 1986 f-250 4x4 with a 351 in it and it will hardly has enough power to pull its own weight. could this be a carb or fuel filter problem and whatcould be done to fix it?? I could not find a filter on the truck or in the manual so i don't know if i am blind or dumb or both 
but any help is appreciated, This truck has to be used everyday so any helpful ideas are appreciated?? Thanks.
but any help is appreciated, This truck has to be used everyday so any helpful ideas are appreciated?? Thanks.
Posting Guru
Joined: Nov 2003
Posts: 2,214
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From: THUNDER BAY
The fuel filter is on the carb the gas line threads into it front of carb Its hard to say if that is your problem without knowing some other things like does it die out when you step on it,does it ping,hard starting,this kinda stuff.
Senior User
Joined: Dec 2003
Posts: 354
Likes: 1
From: Memphis, TN USA
Does it have a catalytic converter?
Most catalytic converter robs power big time when it is clogged. If it is has an O2 sensor, there you can use a back pressure gauge and you just screw that in the O2 sensor thread to test for the back pressure.
Most catalytic converter robs power big time when it is clogged. If it is has an O2 sensor, there you can use a back pressure gauge and you just screw that in the O2 sensor thread to test for the back pressure.
Senior User
Joined: Feb 2004
Posts: 247
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From: Iowa
yes and i have a question about my exhaust which is the cat. Theres a little rectangle and then another thing and then the muffler which is hangin on by a thread and has a huge as piece off of it leaving it wide open.
