Blue smoke on start up and Motorsport AOS
#1
01-01-2011, 02:54 PM
Join Date: Dec 2007
Location: London
Posts: 293
Rep Power: 28 
Blue smoke on start up and Motorsport AOS
Hi all and Happy New Year!
I have a question, on start up (everytime) I get a puff of blue smoke from the LHS exhaust.
This never happened up until about 2 months ago when I had a compression test done and exhaust clamps replaced as they had corroded. The compression test was because I wanted to make sure my oil usage (1 litre/ 1000miles) was not due to any seal problems, all compression values are well within tolerance. I'm thinking the start of consistent blue smoke is just coincidence with the compression test...?
Anyway, I've got oil residue on the plenum body, mainly LHS. All pointing to faulty AOS/ VOS. Would this cause the blue smoke on start up, back pressure sucking oil back into chamber when stopping engine? There's NO smoke under load or WOT and clears after 1-2 minutes, it's really just 1 big puff, and 100% blue, not white.
Also has anyone replaced the stock AOS with the larger motorsport version, part number 996 107 926 00? Is it a straight swap, you don't need extra pipe work as Suncoast sell it with a pipe? I do aprox 5-10 track sessions a year...
Many thanks.
I have a question, on start up (everytime) I get a puff of blue smoke from the LHS exhaust.
This never happened up until about 2 months ago when I had a compression test done and exhaust clamps replaced as they had corroded. The compression test was because I wanted to make sure my oil usage (1 litre/ 1000miles) was not due to any seal problems, all compression values are well within tolerance. I'm thinking the start of consistent blue smoke is just coincidence with the compression test...?
Anyway, I've got oil residue on the plenum body, mainly LHS. All pointing to faulty AOS/ VOS. Would this cause the blue smoke on start up, back pressure sucking oil back into chamber when stopping engine? There's NO smoke under load or WOT and clears after 1-2 minutes, it's really just 1 big puff, and 100% blue, not white.
Also has anyone replaced the stock AOS with the larger motorsport version, part number 996 107 926 00? Is it a straight swap, you don't need extra pipe work as Suncoast sell it with a pipe? I do aprox 5-10 track sessions a year...
Many thanks.
From what you have said...
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