Interfering Neighbour

[Guest DanRyalls]

My next door neighbour (who just loves to interfere) heard my car running the other day and commented that the popping soung I get from my exhaust may be due to tight tappets. IS THIS POSSIBLY CORRECT (as much as I would hate him to be correct - I would like to know?)

 

Engine is a 2.0 pinto

 

Thanks Dan

[Mat-Moo]

Tight tappets? might have to expand that... popping from the exhaust is normally (my understanding) due to a slightly rich mixture I (does this normally happens whn you throttle down?) so some fuel gets into the exhaust and the heat ignites it.

[Dave R]

that and or an air leak on the exhaust.. sucks in air on throttle off and ignites

[BigLee]

Mine pops with no throttle on.

 

Might be something to do with the cherry bombs on either side!

[Guest Guy]

All engines pop when ideling and backfire when you throttle down, you only notice it in the RH because of the lack of silencing.

[Guest Roger 2B]

You haven't said when it is popping - makes a big difference.

 

Mine used to pop and bang very badly on the overrun. After having it set up on a rolling road it has almost gone - much more pleasant now. On the rollers the ignition was advanced from where it was and the mixture was richened up.

[Guest boggie]

When I first fitted my twin 45s I would get poping AND flames coming out of the exhaust ends at high rev engine braking.

Very entertaining but after I got the car rolling road tuned the poping is cut to a minimum and no flames. The tappets idea sounds like $hite to me! As long as the car is properly set up I would enjoy the poping on overrun

Boggie

[Big Jim]

popping on the over-run is usually a sign of an air leak into the exhaust system.

[Guest alan rowe]

I go with that Jim - my left hand side started popping and after a while fiddling with the mixture found that one of the bolts on the manifold was loose - problem sorted

 

Alan

[Guest red7]

All very clever. But I just love the explosions I get as I plummet downhill. Probably one of the best things I love about my hood.Vandal on four wheels.

[Guest chris brown]

I'm with you red7 sounds great