i just changed my spark plugs last night, and it started and ran fine as usual right after i changed them. This morning i took it on a 30 mile trip, and it ran fine. Now, it suddenly won't start, and it's 10 mins right after i shut off the car from the trip this morning. I hear the cranking sound but it just won't ignite, and tried the flooding thing (hold down the gas pedal while cranking), but it still does not work. Could this be a fuel problem? I have not changed my fuel filter ever since i bought this car 6 months ago. Could it be a fuel pressure problem or a ignition coil problem? Please help, any input would be appreciated, thanks!

 

but i only did the flooding after i found out i cannot start the car, and i recall now, the first time i tried to start it, it started for about 5 secs then the rpm dropped really fast to the point where it just died. then after that , i was not able to start it again.

 

ok, thanks, so put half oz of atf in each of the two leading spark plug holes and leave the holes open and crank? sorry, i am still a noob at this, never done a compression before, so what is atf?

 

sorry, i am dumb, i got it, it's auto transmission fluid, thanks red94rx7, i don't have tools with me now, will try it first thing tmr morning after i get the tools. is there any other possibilities could cause this ignition problem?

 

i fixed it on the day after i received tips from red94rx7, but now, i am having the same problem again and it seems to be worse. It is definitely abnormal to have it flooded twice in three days, is it? can anyone please give me more tips or suggestions on possible causes for flooding? I was thinking maybe a leaky injector? thanks

 

Is it always having trouble when its hot? I'd take it to a shop and have a compression test done.

charlie

 

thanks, Charlie, i will do a compression test after i get it running, and that's the important issue here. It did not have trouble while it's hot and it ran perfectly fine before i changed the spark plugs couple days ago. It ran fine right after i changed the plugs so i doubt it's the plug that's causing this coz i swapped back the old plugs and still won't start. I will try to use ATF to help it start this weekend coz car is currently at my parents' house. Is there any suggestion on why my car gets flooded so frequently? thanks

 

bump, can anyone tell me why my car gets flooded so frequently? thanks

 

maybe injector gromets or injectors leaking after the car is shut off in the combustion chamber leading to flooding.

im fighting the same problem right now with 2000 miles on new motor and fuel system upgraded.

but sounds like the same problem i have so i know it cant be compression on my motor.
replaced sparkplugs fired right up drove it 19 miles parked for the night.
fired right up in the morning then at 6:00 9 hours later it wont crank.
pull the plug to find flooded big time???

 

i think my prob is too much premix!
i put band new platinums leadings in and it fired right up first crank.
I'm going to fill it up with gas and no premix and see tomorrow if it does it again and we will have a verdict.also plugs black in about 30 miles.(fouled i suspect)
sorry for the thread highjack

so do you premix or is it stock?(omp)
can you tell if the ground wire right buy the spark plug is grounded good?
ive heard if its not grounded good the coils wont send fire to the plug??
can you push it off? or pull it off?

 

When I had leaky injectors my exhaust manifold would start glowing red with no boosting after five to ten minutes of driving from cold. It's easiest to see this at night.