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Author Topic: Misfire, clouds of white smoke and nasty smell?  (Read 3800 times)

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ScottieMV6

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Re: Misfire, clouds of white smoke and nasty smell?
« Reply #15 on: 06 August 2009, 13:43:32 »
Just out of curiosity I topped up the coolant and started the car up today with the cap off the header tank.

No misfire but lots of white smoke and lots of bubbles coming up out of the header tank.

Does this mean anything/give any more clues?
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Kevin Wood

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Re: Misfire, clouds of white smoke and nasty smell?
« Reply #16 on: 06 August 2009, 13:46:32 »
If the bubbles appear to be more than just the system purging air out, and appear right from cold, it does sound like a head gasket symptom. :-/

Kevin
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ScottieMV6

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Re: Misfire, clouds of white smoke and nasty smell?
« Reply #17 on: 06 August 2009, 13:47:48 »
They appear right away as soon as I started it up and there were a lot of them constantly.

Kev - do you know if the compression tester I need is 10mm thread?
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Kevin Wood

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Re: Misfire, clouds of white smoke and nasty smell?
« Reply #18 on: 06 August 2009, 13:52:59 »
Quote
They appear right away as soon as I started it up and there were a lot of them constantly.

Kev - do you know if the compression tester I need is 10mm thread?

The thread size is 14mm, which is by far the most common. Something like a Gunson Hi-Gauge, or most compression testers, will have this thread as standard without the need for an adaptor, I'm sure.

What I have had to do in the past is add a long reach adaptor for engines where the plug threads are deeply recessed in the wells, but I'm not sure if you'd need one for a V6.

Kevin
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GastronomicKleptomaniac

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Re: Misfire, clouds of white smoke and nasty smell?
« Reply #19 on: 06 August 2009, 15:29:41 »
I think (but await someone more knowledgeable than I) that you could disconnect the fuel injection multiplug, and spin it over on the starter with the plenum off. But, as I say, wait for someone to confirm.

 If you take the plenum off, and the injection bits, you should be able to feel if any of the cylinders are wet - my no.6 inlet is misted with coolant, for example.
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Andy H

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Re: Misfire, clouds of white smoke and nasty smell?
« Reply #20 on: 06 August 2009, 17:09:21 »
You don't really want sparks either, I don't know how true it is but I have read that the DIS pack can fail if it the HT leads and plugs aren't fitted & working. The spark has to go somewhere and if it can't discharge via the spark plugs it finds another route.

You can use a remote switch on a lead with a couple of crocodile clips to crank the engine. One clip to the battery 12v terminal on the starter motor, the other clip to the solenoid terminal on the side of starter motor. You can hold the switch in one hand and the gauge in the other. The ignition key stays in your pocket.
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portomega

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Re: Misfire, clouds of white smoke and nasty smell?
« Reply #21 on: 06 August 2009, 17:20:44 »
The sympton you've described are everything my car was suffering with and the result is a new HG and £800 missing from my bank account  :o
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Kevin Wood

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Re: Misfire, clouds of white smoke and nasty smell?
« Reply #22 on: 06 August 2009, 17:32:26 »
Quote
You don't really want sparks either, I don't know how true it is but I have read that the DIS pack can fail if it the HT leads and plugs aren't fitted & working. The spark has to go somewhere and if it can't discharge via the spark plugs it finds another route.

You can use a remote switch on a lead with a couple of crocodile clips to crank the engine. One clip to the battery 12v terminal on the starter motor, the other clip to the solenoid terminal on the side of starter motor. You can hold the switch in one hand and the gauge in the other. The ignition key stays in your pocket.

You can also remove the two purple relays at the back of the engine bay relay box. No ECU feed and no fuel pump.  :y

Kevin
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