Carborator problems??
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Joined: Jun 2003
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Carborator problems??
I just bought an '86 F250 w/460 engine. I have never owned a truck before, but I need one to haul a horse trailer once in a while, and for trips to home depot. The truck runs so so. At a stop and then acceleration it either backfires or dies out. Going 65 to 70 mph on the freeway she sometimes missed or studders. I think the problem in a combination of the timing and the carborator and possibly an intake valve?? Any help out there?? Thanks
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From: Virginia
Carborator problems??
Yep, plugs, dist cap and rotor, and an inspection of the plug wires would be the first thing to check. Also spend some quality time checking vacuum lines and little stuff like that. Don't be afraid to take the aircleaner off, and use a ladder to climb up on the radiator support to get a good look at the situation.
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Carborator problems??
While you're doing the tune up, I'd suggest you spend $2.40 on a can of WD-40 or some other flammable sprayable item and, with the truck running:
spray it (with the nozzle on the sprayer) all around any intake gaskets/vacuum hoses you see. If you find a spot where the mottor revs up when you spray there, you've found an intake leak.
Then you plug that leak somehow, i.e. replace gasket or hose or find out where the disconnected item plugged in.
spray it (with the nozzle on the sprayer) all around any intake gaskets/vacuum hoses you see. If you find a spot where the mottor revs up when you spray there, you've found an intake leak.
Then you plug that leak somehow, i.e. replace gasket or hose or find out where the disconnected item plugged in.
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Carborator problems??
Definitely a good idea to pull the plugs/plug wires/cap/rotor/misc. filters/pcv valve and inspect/change when necessary on any used vehicle you buy.
But if you don't find your problem there, and your engine still stutters, check for intake leaks. Might as well do it at the same time if you can afford a can of wd-40. Peace of mind comes cheap.
But if you don't find your problem there, and your engine still stutters, check for intake leaks. Might as well do it at the same time if you can afford a can of wd-40. Peace of mind comes cheap.
Last edited by lectrick; Jun 30, 2003 at 04:13 AM.
