Engine looses power on acceleration
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Joined: Nov 2005
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Engine looses power on acceleration
I have a 89 ford f-150 with a 4.9L and it will loose power when i accerlerate. I hear a clicking noise when i get on the gas but i cannot hear it at idle. I get really bad gas milage. I'm not sure but i'm about ready to drop another engine in if i can't figure it out. I think it could be a lifter or valve but I want to make sure before i go to the trouble. I was wandering if anyone could figure it out. THanks
Postmaster
Joined: Mar 2002
Posts: 3,545
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From: Coal Region
was it tuned up recently? (plugs, wires, cap, rotor, fuel filter)
was the o2 sensor ever replaced?
what is the timing set at?
did u perform a compression test?
did u perform a leak down test?
u can also tell the condition of the engine by its intake manifold vacuum. check this link out: http://www.users.bigpond.com/ergoff/vac1.htm
gives a good description on what readings are good, bad and how to perofrm them.
was the o2 sensor ever replaced?
what is the timing set at?
did u perform a compression test?
did u perform a leak down test?
u can also tell the condition of the engine by its intake manifold vacuum. check this link out: http://www.users.bigpond.com/ergoff/vac1.htm
gives a good description on what readings are good, bad and how to perofrm them.
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