mysticstriper

I was driving to work, very fast as usual and when I took the exit ramp and stopped at the stop light, my 93 GT started popping VERY loud and missing. I pull over immediately to find out where the noise is coming from and it's backfiring through the K&N air filter on my cold air setup. Any ideas? I made it the rest of the way to work about 10 miles but I'm afraid to drive it anymore thinking it will tear up something worse. If it were a carburetor I would be thinking it jumped time and needs a timing chain.. What do yall think?

mysticstriper

Ok, Well thanks for the help. I'm pulling apart the top end in a parking lot after a 13 hour shift everyday. My guess right now is bent pushrods or a broken valve spring.

joeymustang

wait! that could just be bad timing...check your timing first as it may be that or that its leaning out

calfroper_06

did you measure you pushrods when you put he H/C/I in. and i would double check the timing before i went to tearing the top end down, could possibly be a bad injector

FivePointOhh

check your timing first before you tear anything else apart. set to 10* base timing spout out and then see if that solved your issue.