White smoke after hard pull.

OhCdn

Well-known member
Joined
Nov 6, 2019
Location
Canada
TDI
2002 Golf MK4
hey guys not sure if this is a simple question to answer but here we go, so I have been seeing this issue on my golf alh where when I do a hard pull no issues but when i let off the throttle white smoke comes out for 3 or so seconds but then just stops. My question is that most likely my heads lifting or just unburnt fuel because it was just requesting alot of boost (26psi) and fuel then I let go of throttle then it can't burn it all. Thats how I see it but please chime in guys thanks:)
 

Mongler98

Top Post Dawg
Joined
Mar 23, 2011
Location
Northern MD (HAGERBUSH)
TDI
98 Jetta TDI AHU 1.9L (944 TDI swap in progress)
My ahu does the same thing and turn out to be oil vapor from the ccv.
Disconnect the ccv and go drive and if it continues then it's either fuel or coolant. Are you noticing any coolant loss or high pressure in the coolant bal once its cooled down?
 

OhCdn

Well-known member
Joined
Nov 6, 2019
Location
Canada
TDI
2002 Golf MK4
My ahu does the same thing and turn out to be oil vapor from the ccv.
Disconnect the ccv and go drive and if it continues then it's either fuel or coolant. Are you noticing any coolant loss or high pressure in the coolant bal once its cooled down?
I havent noticed my coolant moving too much but I am keeping my eye on it ever since, I will try this on the weekend let ya know how it goes.
 

OhCdn

Well-known member
Joined
Nov 6, 2019
Location
Canada
TDI
2002 Golf MK4
My ahu does the same thing and turn out to be oil vapor from the ccv.
Disconnect the ccv and go drive and if it continues then it's either fuel or coolant. Are you noticing any coolant loss or high pressure in the coolant bal once its cooled down?
My ccv has oil going into intake for sure now i have seen people with tunes going down from ccv port and exhaust port is that a vaccum catch can set up in a idea? And driving with it off won't oil go everywhere? Also coolant ball you talking where you top up coolant? Thanks
 

OhCdn

Well-known member
Joined
Nov 6, 2019
Location
Canada
TDI
2002 Golf MK4
My ahu does the same thing and turn out to be oil vapor from the ccv.
Disconnect the ccv and go drive and if it continues then it's either fuel or coolant. Are you noticing any coolant loss or high pressure in the coolant bal once its cooled down?
Ordered a catch can but noticed my turbo making a louder whine then usual around 8 psi is when I start to hear it and when I pull it gradually goes up, still build the same boost but recently blew a boost pipe and drove it 10 mins or so... newer vnt 17 aswell.. is this a sign of the turbo going?
 
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