Inconsistent misfire

[Pedalforever]

Good evening guys. Hoping to get some help here. Had a cracked intake on my 1996 LX. Swapped it for a nos ford intake with the metal crossover. Everything went together great. However the car now has an inconsistent miss. When I first start the car it runs great. Idles good but as it warms up you can hear the occasional miss/ burp from the exhaust. Low rpm it's angry. As it revs up it gets a little happier. Same with driving it. Took it to work this morning as it needed gas and I work less than 2 miles away. By the time I got there it was misfiring pretty badly. But non consistant as in if i rap the gas fast it want to throw up all over itself and doesnt know what to do. However if I ease into it it seems to giggy up just fine. No check engine light. Just trying to figure out where to start. I appreciate any input.

 

[theterminator93]

Welcome.

Have you checked for vacuum leaks? Vacuum leaks tend to be worst at low throttle/RPM conditions.

 

[Pedalforever]

I didn't notice anything however i can look again tomorrow. Unfortunately i cannot dig into it until the weekend. I did notice the ends on my FORD RACING plug wires that latch onto my coils are blown out and don't seat very well. I put 8 zip ties around the clasps making sure they stay on for the ride home but it didn't do any different. I appreciate your input and will be scoping it out tomorrow.

 

[Jae 'Bird]

How old are the spark plugs? if they are old they could be bad or the gap might be off, I know its obvious but hey might as well check the easy stuff. Welcome to the forum, glad to have another member keeping these great cars alive

 

[theterminator93]

That's definitely a problem too; as I was thinking about my response the idea also occurred to me to have you check to be sure the plug boots were fully seated on the plugs.

 

[Grog6]

Imho, any problem like that is usually spark plug wires, or water or coolant in the plug wells. plug wired die after about 3 years.