Recently my 200SX has started backfiring when letting off the throttle.
Is it likely to be a leak on the inlet manifold or a leak on the exhaust, or has anyone else encountered this problem themselves and have any other ideas what it might be?
Has it had any modifications, like a different dump valve?
It may be there is a leak around the dump valve stopping the air getting recirculated back into the system. This would mean the mixture would be rich when the dump valve "dumps".
