Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Martin_1962 on 16 May 2007, 11:02:11

Title: Smokey/Smelly on start up
Post by: Martin_1962 on 16 May 2007, 11:02:11

Plume of white smoke and it is smelly comes out of the exhaust on start up.

I think it is injector seepage rather than valve seals, what is the concensus.

Never had oil burning on a cat car so don't know what it would smell like.

Title: Re: Smokey/Smelly on start up
Post by: TheBoy on 16 May 2007, 11:09:51

Quote

Plume of white smoke and it is smelly comes out of the exhaust on start up.

I think it is injector seepage rather than valve seals, what is the concensus.

Never had oil burning on a cat car so don't know what it would smell like.

White smoke = water?

Title: Re: Smokey/Smelly on start up
Post by: Marks DTM Calib on 16 May 2007, 11:21:43

How long does yours run on petrol for before switching to LPG...?

Title: Re: Smokey/Smelly on start up
Post by: Elite Pete on 16 May 2007, 11:33:59

Isn't water a by product of running on LPG.

Title: Re: Smokey/Smelly on start up
Post by: Kevin Wood on 16 May 2007, 12:13:26

Water is a by product of running on anything  ;)

That's why exhausts rust through  >:(

I've known cat equipped cars to throw out a plume of white smoke if they've been flooded so a leaking injector sounds plausible. Any other problems starting? Does cranking with foot on floor for a few seconds followed by starting normally help?

I guess if the petrol injection system only gets used during warm up it might be more prone to getting bunged up. Might be worth running a tankful of fresh fuel through it without using the LPG and maybe add some fuel system flush?

Kevin

Title: Re: Smokey/Smelly on start up
Post by: Martin_1962 on 16 May 2007, 12:26:42

I have chucked some Redex in now, runs for about 2 minutes when cold and 30 seconds when warm and about 40-50 seconds when started after a few hours.

I think it is fuel seepage - I'll try sniffing again.

Title: Re: Smokey/Smelly on start up
Post by: Martin_1962 on 16 May 2007, 12:27:50

Can't afford to chuck a tank of petrol through :-[

Title: Re: Smokey/Smelly on start up
Post by: TheBoy on 16 May 2007, 12:29:43

Quote

I have chucked some Redex in now, runs for about 2 minutes when cold and 30 seconds when warm and about 40-50 seconds when started after a few hours.

I think it is fuel seepage - I'll try sniffing again.

Presumably it is happening before the switchover?

Could the lpg injectors be leaking (yours is SGI?). Obviously the petrol ones could be as well.

Title: Re: Smokey/Smelly on start up
Post by: Martin_1962 on 16 May 2007, 12:38:43

Firstly LPG systems leak - they all do - prevents pipes delaminating :o there are microscopic holes to allow leaking gas to escape rather than delaminate and burst the hose.

Secondly the gas would not return to liquid.

It did it when I started the car from cold this morning

Title: Re: Smokey/Smelly on start up
Post by: Martin_1962 on 16 May 2007, 12:39:53

The propane would dissipate or burn very rich, this I am sure was based on a liquid.