whats the popping & missing from?

[blkstangman88]

i just put a overhaul kit on my car mainly cuz i blew a head gasket and didnt have the money for a complete rebuild, but now when i i drive the car to say 4k rpms and let off the gas the exhaust pops.
and when i accelerate the car acts like somthing holding it back then it pops a coulpe times and its fine. when i race my car its fine...any ideas?

oh ya its an 88 gt mustang 5.0

 

[ECU5.0]

timing could be off...check that and your fuel pressure. those would be the first things id check

 

[blkstangman88]

times fine, ive played with the time between 10 and 18 and the best spot was 13 so thats where it is. checked the fuel pressure its fine....dont c y it would be off cuz i just installed a new 155lph pump and inline fuel filter about 6 months ago....any other ideas?

 

[ECU5.0]

didnt your avatar used to be different? anyways, i cant really think of anything else. im no expert on this stuff

 

[blkstangman88]

actualy i never had one till now........first time i started my car after installing the overhaul kit, the lower intake gasket shifted and all the coolant went though the cylinders....could the spark plugs be bad? plus could a bad cap and rotor do this aswell?

 

[ECU5.0]

yeah, i would definetly change your plugs and wires, cap and rotor. it cant hurt thats for sure

 

[blkstangman88]

kol ill try that...thanx

 

[281pony]

i had the same problem. it turned out to be my plugs and cap/rotor.