I recently put in new plugs and new wires and and still has the same sound. Thanks for the reply.D.Hearne said:Might have a plug that's fouled more than the rest and it skips a beat now and then. Or a bad plug wire. Hard to say.
NasaGT said:I had a very small exhaust leak on my 02 GT that gave the exhaust the same sound. I tightened up the catback a little bit and the 'poompf' sound went away.
OK. Thanks for the explanation.NasaGT said:lol - that's the part of the exhaust that is aft of the catalytic converters. Hence the name cat-back. Since these classics didn't have catalytic converters, thats not a term used much in this section.
Jeff,stangonline said:You probably have a stock cam? What you are hearing is the normal sound of exhaust scavenging. If the car runs fine otherwise and is not down on power, I wouldnt worry too much about it.
Jeff
I think the wires are on OK. I changed them one at a time so as not to mix them up. Thanks for your input.badazz68stang said:you might want to check the firing order and make sure u put the new wires back on the cap correctly because it sounds like you have a dead cylinder. im pretty sure the 289/302 order is 15426378.
I gapped the new plugs to 0.34 and I also have a Petronix Ignitor module in the stock distributor. I did tighten the bolts on the exhaust manifold but it still makes the sound once in a while. Thanks for your input.mustangdave said:Do a search on "poomph"J/K. Are you sure the plugs are gapped correctly; I never trust them out of the box. Also check for loose plug wires, worn dizzy cap or rotor, and as mentioned, an exhaust leak. There is also a small chance that there is some trash in the fuel system that is clogging the filter momentarily and then letting the flow resume.
stangonline said:You probably have a stock cam? What you are hearing is the normal sound of exhaust scavenging. If the car runs fine otherwise and is not down on power, I wouldnt worry too much about it.
Jeff
OK. Thanks for the input.Jester67 said:My car will do the same thing from time to time on the passenger side bank but to date I have not located the cause. If it is terminal I guess I will let you know what it is when she lets goes.
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