hdoshier2006

ok i have 95 mustang gt, i have TFTW heads, a cam, TF intake, under drive pulleys, 24# inj, CAI, headers, roller rockers, and nitrous. i broke a valve spring a month ago got that fixed now it doesnt run right. i think the valves were out of adj, but i played with it a while and got it runnin decent, then all of a sudden it started missing on 2 cylinders. i pulled the plugs and found that the number 7 and 8 were fouled like they were runnin rich. all the others looked good. what would cause this problem and how can i fix it? any help would be nice thanx.

projectresto83

Check to make sure you wires, cap, and rotor are in good working order. Swap the plugs with a couple of others to see if they foul again. Wait till the engine/headers are cold and start it and feel the header tubes on those cylinders and see if they are getting as hot as the others as quick. If not then it seems like you have a firing problem. If they are as hot as the others as quick you have a fuel problem.

mjr46

well since you had a known valve adjustment issue.. I'd perform a compression test to make sure so valves are slightly bent and not sealing properly

projectresto83

Yea I did forget to mention that one.

hdoshier2006

when i fixed the broken spring, i went ahead and replaced the cap, rotor, plugs, and wires, so all of that was new. i also found out that it was overfilled with oil the last time i had the oil changed. i ran a compression check on it the other day and nothin out of the ordinary was wrong. could it possibly be a computor problem? im gonna go ahead and replace the two plugs that were fouled and go from there. also after i replaced the spring, and got it running decent, the exhaust smelled like it was running to rich, so i turned down my fuel ores reg, but that didnt seem to help, what would cause that? thanx for the help.

projectresto83

Are you throwing out any codes??

hdoshier2006

no its not throwin any codes, and the check engine lights not comin on. also could it be a computer problem?