Vehicle & Technical > Discovery

popping sound on unleaded when changeing gear

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mentalmoshio sophs V8i:
http://www.youtube.com/watch?v=dacJQGzaC6c

ever since ive fitted my straight through pipe a popping sound happens when u change gear on unleaded more so than lpg .

seeing this bother me dont think mines flames

cause i park by a plastic wind break at work any ideas or just normal

Disco_Stu:
Pinking is my guess dave. Its been a while since I worked on petrols but as you lift off and the engine goes into the overrun cycle, pinking (caused by pre-ignition) can occour. It's usually a sign that the ignition timing has been advanced too much, try retarding it a bit and see what happens.

Stu.

P.S - the embedded clip isn't working for me...

Range Rover Blues:
Probably just unburned fuel in the exhaust, you notice far more now because the exhaust isn't catching any of it.

Like a rally car ;)

lee celtic:
I'd say it's just unburnt fuel from the over run poping in the exhaust , we used to get some good flames from vance and hince performance pipes on the bikes looks cool at night :cool:

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