[Will Sink]

Hi guys,

Having a nightmare problem with my 1.4 TSI.

Replaced the timing chain, tensioner, head reconditioned, new valves ect, but for the 3rd time the exhaust camshaft stretch bolt has slackened off.
Anyone have any idea why this keeps happening?
I torque the new stretch bolts to 40nm plus 90 degrees inlet and 50nm plus 90 degrees exhaust, should I be using lock tight on the bolts? or is that the wrong torque settings?
many thanks for any advice

Willie

 

[positivevwtech]

It seems like ur not torqueing it correctly. It's 15nm then 50nm then 135 degrees

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[positivevwtech]

It seems like ur not torqueing it correctly. It's 15nm then 50nm then 135 degrees

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That is for a 16 1.4l hope that helps

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[Will Sink]

That is for a 16 1.4l hope that helps

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Hi,
Thank you for taking the time to reply.
My golf is 2008 (should of mentioned that)
I spoke with my local VW dealership, they said it should be 50nm plus 90 degrees, no mention of loctite, but this time I cleaned the cam threads thoroughly and applied loctite as suggested by the VW mechanic.
Lets see what happens

 

[CA Kalkman]

Hi guys,

Having a nightmare problem with my 1.4 TSI.

Replaced the timing chain, tensioner, head reconditioned, new valves ect, but for the 3rd time the exhaust camshaft stretch bolt has slackened off.
Anyone have any idea why this keeps happening?
I torque the new stretch bolts to 40nm plus 90 degrees inlet and 50nm plus 90 degrees exhaust, should I be using lock tight on the bolts? or is that the wrong torque settings?
many thanks for any advice

Willie

Hi Willie,

On my TSI 1.4 CAXA engine I'm having exactly the same problem.
Also 3 times the timing shifted lightly after running for 20 second idle.
I also replaced the 2 bolts for new ones.
Did the lock tight fix the problem ?
Where to apply, on the the tooth wheel surface as well ??

Thanks in advance,
Kees