Mar
In my case I have a catback exhaust and I notice the back fire in cold temperatures. This cold be an indication of a back pressure issue, due to the larger pipe. Yet I don't know what this would all mean on the part of a tune up.
Answer:
A back fire could mean that your engine is running too rich on the air/fuel ratio. So too much fuel is making it into your exhaust without getting burned. Once there it explodes inside your exhaust pipe as soon as enough vapors accumulate.
Or it could be backfiring thanks to poor engine timing. The air/fuel in your combustion chamber is combustion too late and so when your exhaust valve is open all that explosion is forced out through your exhaust valve and none of it is used to press down the piston like what it's supposed to do.
Running a car like this damages the internal engine components at an alarming rate and you could be looking at a new engine or a new car.
Newer cars do not have this backfire problem since all the timing and combustion is computerized. When was the last time you saw a new car backfire?
Answer:
yes. I would have ur car looked at
Answer:
yur 'timing' is off…
Answer:
It could be an indication of bad exhaust valves or running way too rich, or even the timing.
Have it checked out, no sense damaging other parts.
good luck
Answer:
i would start with making sure you don't have an exhaust leak be hind the cat. if cold air get introduced into the system it can pop under deceleration. i found this to be true with my bike.
Answer:
Don't sound good, that's for sure. It's just your timing is off. It's not backpressure. Set your engine timing.