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When I start my truck (1993 ford f-250 7.5L) it begins to shake pretty bad and smells strongly of gas. I changed the spark plugs, spark plug wires, and even adjusted the timing. What is wrong with the truck?
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Carlos it sounds to me like your running with a dead cylinder. I want you to test for spark on all four of your plugs one at a time. You can buy a spark tester at most auto parts stores or just use a small diameter but long screw driver. With the engine off key off pull a plug wire off and insert the plug end of tester into the wire boot or stick the end of the screw driver in and attach the clip on tester to engine block or hold the shaft of the screw driver an 8th of an inch from the block an have a helper crank the motor ( be sure to keep all lose clothing and items away from moving parts) if you see spark jump the gap it's good. You can also remove the spark plug stick it back in the wire boot and holding the boot hold the threaded end of plug against the block. And watch the electrode for blue spark. I'm thinking you have a bad coil.
you should conduct spark test in spark plug on high tension wire and compression test in the that plug 6&3 strong gas smell is the result of unburn fuel!!!!but the best solution to bring the car to the expert!!!!!!
AWESOME a real camaro problem. backfire. strong odor of gas because the gas isn't getting burned caused from backfire. backfiring because the spark isnt sparking when its supposed to. problems could be bad spark plug wires , bad plugs , bad ignition parts. your gonna need to check wires for bad spots, check ignition coils and stuff like that. if all that stuff is ok, then your problems have to do with inside the engine. jumped time etc.
sounds like the engine is misfiring .. often thats caused by arcing of aging ignition wiring and distributer cap ... you can change the following items:
spark plugs , distributer cap, rotor and ignition wiring .. that often fixes problems with that year car ..
pull out one of the spark plugs plug it in to plug wire run a jumper wire to the body or hook of the plug to ground the jumper must go to a suitable ground. pull out pcv hose to prevent car from starting have an assistant turn over the engine while you check for a strong blue or purple spark if the spark looks white or yellow there is a weak ignition condition and this must be adressed, bad ignition module bad cap and wires, etc. do the cap and rotor first if the spark is weak. If there is a strong spark sometimes holding the gas pedal to the floor while turning over the car for no more than 10 seconds starts stubborn motors do not let up on gas if car begins to start not until the motor starts to rev up.
bad spark plug wire coil pack that the most common thing smell and shacking sure its not running on all cylinder to find out what broken start the engine disconnect at coil pack cylinder number 3 be carefull not to get a shock disconnecting the wire if lots of spark to it back disconnect wire at the plug when removing it should here spark jumping if good change the spark plug it should fix it if not let me no good luck pierre
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