Backfire

[colin.newton@boc.com]

Is it common for Esprit's to backfire when switching off ?

I'm assuming it means my carbs are running to rich. If I just switch off the ignition I get a mild "pop" but if I blip the throttle I get quite a "bang"

Colin

[rogerch]

I think it says in the manual DO NOT blip the throttle before turning off. Because the "Bang" has potential to damage the turbo. It's un-combusted fuel igniting under heat. I've been tempted to up my air correction jets, but at all normal running the mixture is fine.

[ozontour]

My girl has been known to throw a 2 foot flame from the exhaust when changing down at speed, but i thik this is quite normal isn't it?

I notice Bib's picture on his profile does the same

Justin

[chris]

hi, i dont think a normal carb turbo should backfire when turned off. have you had any work done to the car recently? Could be anything from to rich a mixture in the carb or ignition timing to cambelt timing and a cracked exhaust manifold. can you give any more background details? cheers chris

[colin.newton@boc.com]

Chris

I havnt had any work done on the car (although planning to get it tuned/set up this year) but I think there maybe a crack in the exhaust manifold

Colin

[mercman]

Could be ignition timing or the cracked manifold, does it pop and bang on overrun, if it does it's a fair bet it's the manifold.

Les

[colin.newton@boc.com]

It does - sounds quite nice then though !

Bugger, sounds like another job on the to do list

Thanks guys

Colin