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TDI Power Enhancements Discussions about increasing the power of your TDI engine. i.e. chips, injectors, powerboxes, clutches, etc. Handling, suspensions, wheels, type discussion should be put into the "Upgrades (non TDI Engine related)" forum. Non TDI vehicle related postings will be moved or removed. Please note the Performance Disclaimer.

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Old March 5th, 2018, 12:15   #1
Join Date: May 2017
Location: Birmingham
Default Need help please blue smoke

Ok where do i start I知 quite new to the forum so by saying hello all
And I知 not sure if I知 posting in the right place

Iv had my seat Leon mk2 fr 2.0 tdi bmn engine code for a few year now and been modifying as the year have gone by. So basically I知 running a 2260vk turbo with a few other bit n bobs. After fitting the turbo and finally getting the clutch right I was hoping to get the final map done my narrco when the car started smoking. When I mean smoking, blue smoke when the car got up to temp and a longish drive and say you stopped for fuel and come to restart the car it will fill the forecourt with blue smoke but would clear. If the Car is cold or even been standing the smoke is minaul normal start up smoke. Anyway narrco sed they wouldnt map it until it痴 sorted. Cut a long story sort the engine was rebuilt and after running the engine in it seems like the problem is still there or come back

I知 just wondering or hoping someone if anyone has any ideas or even had this problem
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Old March 5th, 2018, 13:48   #2
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Join Date: Mar 2018
Location: US
TDI(s): 2001 Jetta

Blue smoke is oil being burning. Is this a new or used turbo? Check your oil level. Pull the hose at the intercooler and check for oil there. When the engine was rebuilt, what was done to the heads? Were valve guides changed?
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Old March 5th, 2018, 14:35   #3
Join Date: May 2017
Location: Birmingham

Everything is brand new inside the engine apart from pistons. Iv had a recon head as the last one had cracks with new valve stem seals when they fitted the uprated valve springs. The reason I rebuilt the engine was when I removed the turbo there was oil on top of the exhaust valve on cylinder two. Which was tell me valve stem seal. Il do the checks you mentioned tomorrow
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Old March 6th, 2018, 14:44   #4
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Join Date: Nov 2005
Location: Great Britain
Fuel Economy: 35-45mpg

Who done The turbo ? I have seen a few rebuilt gtb2260vk turbos that we’re smoking blue due to poorly routed turbo oil drain pipes or misadjusted vnt levers...narco is doing well not to tune your motor - it could blow on the rollers !
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Old March 7th, 2018, 09:30   #5
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Join Date: Mar 2014
Location: St.Paul, MN
TDI(s): 02 golf ALH
Fuel Economy: 42 stock, 47-49 now

Originally Posted by Greg1289 View Post
Everything is brand new inside the engine apart from pistons.
Measured piston/wall clearances and ring end gaps?

It's still likely the head from your description of mainly smoking on a hot start
easy enough to cut a stem seal while installing
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