if it backfires it could be timing or else you have it flooded from trying to start it. You didn't say if the engine is carb or fuel injected. If it is carbed, let it sit for awhile to let the gas drain out of the carb. If it is fuel injected then it is probably timing. year make and model of vehic and millage
You will know if your car has jumped timing by the way it starts up. If the engine is slow and sluggish, it could be a sign of jumped timing. Also listen out for strange noises coming from the engine or if it backfires, it is likely that there has been a change in the timing sequence.
It could be your timing is off or your timing chain needs replacement.
Sounds like the timing is off.
timing or carb
Valve timing off, timing chain jump.
Check your timing and your vacuum advance.
That sounds like your timing is off. Adjust it at the distributor cap with a timing light.
Your timing belt has probably worn out, or broken, and has jumped timing.
i would look in to having the static timing checked.(ignition timing) you may have crossed sparkplug wires or the timing is simply way off,among other things.
check your timing
Perhaps timing chain has jumped
Timing is off.
It has either . jumped timing
Have you checked the ignision timing. Check the firing order as well
Perhaps: Bad fuel (water in fuel or tank) Timing out of adjustment--Worn timing chain (stretched) or gears? Bad distributer?
Possibly the timing belt has failed. Check the timing marks in orientation to #1 cylinder TDC and distributor rotor.
Check the crankshaft sensor. Also check the timing and timing belt. The backfiring indicates that the engine is firing at the wrong time.
Well it could be that your timing might be off if it didnt backfire before,i would get the timing checked or go back to where you got it done.
the engine has not been timed correctly
Timing is way off specs, or plug wires hooked up incorrectly. I would suspect the latter. Firing order 1-3-7-2-6-5-4-8
Its out of time. The timing is off, check the key in the flywheel , and check to make sure the the timing chain has not jumped or slipped a tooth.
check timing belt/chain sounds like valves not timed properly, or not closing completely
timing problem or crossed plug wire or even possibly a burnt valve.
maybe check for a worn CAM LOB.
If any car backfires it is usually due to retarded timing, running lean or a problem in the valve train.