E39 540 Pops like Colin’s Focus WRC

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   Hi everyone,
(First time poster, be gentle...) I've newly acquired an E39 540 (50k, 98R). It's a beaut, and runs like a charm -sh*t off a stick and all that...
Anyway, thing is, when it's cold and in Neutral (it might do this when warm too, but I've never tried) -if I rev it to like 4 - 5k, then lift-off sharpish, the exhaust pops like a rally car!
I was just wondering if anybody else had come accross this and if it has any significance? (Car's got an untouched 4.4 V8 with standard exhaust.)
Cheers,   

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paulneale Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 09-April-2003 Location: United Kingdom Status: Offline Points: 15	Topic: E39 540 Pops like Colin’s Focus WRC Posted: 09-April-2003 at 15:36
	Hi everyone, (First time poster, be gentle...) I've newly acquired an E39 540 (50k, 98R). It's a beaut, and runs like a charm -sh*t off a stick and all that... Anyway, thing is, when it's cold and in Neutral (it might do this when warm too, but I've never tried) -if I rev it to like 4 - 5k, then lift-off sharpish, the exhaust pops like a rally car! I was just wondering if anybody else had come accross this and if it has any significance? (Car's got an untouched 4.4 V8 with standard exhaust.) Cheers,

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paul325i Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Really Senior Member II Joined: 23-January-2003 Location: United Kingdom Status: Offline Points: 666	Posted: 09-April-2003 at 16:25
	normally just the unburned fuel leaving down the exhaust system as you let off, well in a rally car it is, i wouldn't have called it a problem bearing in mind you have a big v8 lump its gunna have a lot of fuel about.
	Visit My BMW Got an E30? Visit The E30 Zone

Amit325i Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 08-April-2003 Location: United Kingdom Status: Offline Points: 29	Posted: 09-April-2003 at 17:08
	Man your crazy reving your in neutral/park and when its cold! its bad for the gearbox and engine to rev it without load! If it does pop its just unburned fuel being exited in the exhaust manifold since the manifold gets hot fast, it will ignite and pop. However doesn't mean a thing but I would advise to get your mixture checked from a proper bosch agent just to double check from cold to normal running temperature!

Keithb32 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 14-March-2003 Location: United Kingdom Status: Offline Points: 11	Posted: 10-April-2003 at 08:34
	It might be your cat screaming in pain, don't do it!!! ...strokes chin and through intake of breath..'that ain't gona be cheap'

paulneale Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 09-April-2003 Location: United Kingdom Status: Offline Points: 15	Posted: 11-April-2003 at 15:34
	Goodness me fellas, I'd have hoped the old beemer set-up was a little more robust than your frightening replies suggest... ..not to worry though, for those of you who winced at my tale of cold rev popping, I only did it a couple o' times anyway. (Novelty since wore off!) Cheers,