96 f150 4.9l miss or skip at idle new plugs wires fuel filter cap rotor sea foam the **** out of the engine. just got the truck 3 weeks ago ran great now runs good going down the road just crappy idle intermittent miss
is not timing or vacume already checked timing is set to 10 tdc with the jumper offis not timing or vacume already checked timing is set to 10 tdc with the jumper off
it did this for a while but would clear up now it does it all the time i have been over every inch of this engine looking and listening the only thing i can see is possibly egr still open but i have no codes helpit did this for a while but would clear up now it does it all the time i have been over every inch of this engine looking and listening the only thing i can see is possibly egr still open but i have no codes help
sounds like to me you got a bad coil pak as each plug has its own coil on top of the plugsounds like to me you got a bad coil pak as each plug has its own coil on top of the plug
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I went through this problem, and did everything you did, even the SeaFoam. Turns out, the new distributor caps I bought were defective. I switched it out to another brand, worked for a day and then sputtered again. I read somewhere that (FOR THIS VEHICLE) aftermarket caps and rotors aren't manufactured correctly, causing arcing. Switched the cap and rotor to AC Delco brand, and all ran good, going on 1 year now with no problems.
Have you tried replacing the fuel filter? They're pretty cheap and easy to do and if they get clogged they can cause problems. If that doesn't work get a fuel pressure tester you can rent from parts stores like auto zone and you can test your fuel pump
Well, since the spark to #2 comes from the distributor, and the others are firing, could be a bad plug wire or sparkplug. Also make sure there isnt anything down around the sparkplug that could be shorting out. I would go ahead with new plug wires for starters, as that usually gets replaced when you do the distributor and rotor. Inspect plugs too- they may need replacing.
You missing the expertise of a repair shop, that has the proper way to diagnose & find only the main problem,not just install parts as you did. All you did was preventative maintenance parts, not test for cause & solution
I am thinking it is your distributor. I had this happen just a few weeks ago. Check with local junkyards as I found a used(almost brand new) distrubutor for 100.00 opposed to almost 300.00 new. Same exact problem and also changed each thing you listed prior to finding out it was my distrubutor. My truck runs like it did before the issues started.
do a minor tune up .replace distributor cap and rotor.coil spark plugs and wires.change fuel filter.check for intake leaks.at vacuum hoses.check air duct going to the throttle body.if tune up dont help.check engine compression.for weak cylinders and worn valves.
is not timing or vacume already checked timing is set to 10 tdc with the jumper off
it did this for a while but would clear up now it does it all the time i have been over every inch of this engine looking and listening the only thing i can see is possibly egr still open but i have no codes help
sounds like to me you got a bad coil pak as each plug has its own coil on top of the plug
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