I have a 91 2.5l olds couple times in the last month after coming out on a cold engine the car wouldn't start. I would crank it for 5-10 minutes and it would just backfire a couple times. It smelled flooded, I would wait couple minutes each time i tried to crank it.(to help if it was flooded) Then after 10ish mins the engine would start and run little off for 10-20 seconds then idle back to normal and drive normal.
Other then the times it does this, it starts easy and runs good. It does have a knock to the engine im guessing the timing chain? but most
4cyl engines with 100k seam to sounds like this.(atleast ones i seen) The engine did have spark and had fuel to the carb.But i was hard to tell because it started up not long after that point.
What could my problem be ? Crank sensor?(does it have one i couldn't find it?) Computer going out?
I really don't know what to do without just putting ton of money into it replacing everything.
Thank you for the help.