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Gtir Motorsport club » Tech room » Help and Advice » Blue smoke

Blue smoke

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1Blue smoke Empty Blue smoke on 4th May 2015, 1:24 pm

Gti-r dannyboy


Hi all there is blue smoke on start up when the engine is cold, after a couple of minutes it goes.
There is no smoke on start up when engine is warm or when driving the car. Could it be the tubby?

2Blue smoke Empty Re: Blue smoke on 4th May 2015, 1:30 pm

PartyPete

PartyPete
the one star club
the one star club
Possible valve stem seals? If there knackered oil drips down the valves into the cylinder and collects and burns on start up?

3Blue smoke Empty Re: Blue smoke on 4th May 2015, 2:11 pm

Gti-r dannyboy


Are they a big job? How long can i leave it like that before i have to do something about it?

4Blue smoke Empty Re: Blue smoke on 4th May 2015, 2:30 pm

nomad

nomad
Admin
Admin
I wouldnt like to comment on possible cause as it could be a couple of things ... as for stems .... its either head off job or you can pack the bores out with string and do it ... either way its not a great job ...


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5Blue smoke Empty Re: Blue smoke on 4th May 2015, 2:51 pm

PartyPete

PartyPete
the one star club
the one star club
Yes it could be numerous things, does it smoke on boost?

6Blue smoke Empty Re: Blue smoke on 4th May 2015, 3:08 pm

Gti-r dannyboy


No smoke on or off boost, just them first couple off minutes while the engine is warming up.

7Blue smoke Empty Re: Blue smoke on 4th May 2015, 3:37 pm

PartyPete

PartyPete
the one star club
the one star club
If it was my money id say valve stem seals

8Blue smoke Empty Re: Blue smoke on 4th May 2015, 3:43 pm

Gti-r dannyboy


I think it is myself, is it a job that can wait or needs to be done soon?

9Blue smoke Empty Re: Blue smoke on 4th May 2015, 3:45 pm

Mr B

Mr B
gtir technician
gtir technician
^ if betting I would go with partypete.
Good idea do a compression test too so can rule out bore/rings.
Valves seals are cheap & using the rope in bore trick works but it a fair bit of fannying about .
Checking engine breathing system would be good too just to be sure all working as should be.

10Blue smoke Empty Re: Blue smoke on 4th May 2015, 3:52 pm

Mr B

Mr B
gtir technician
gtir technician
First thing is compression test & build more evidence towards valve seals. Check breather system & intake/intercooler for excessive oil residue.
You can run with it for a while if it only minor. Long term it not good as will increase carbon build up in cylinder & start causing more problems ...

11Blue smoke Empty Re: Blue smoke on 4th May 2015, 3:53 pm

Gti-r dannyboy


Cheers guys

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