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Discussion Starter #1
Hi Everyone; I am new to myturbodiesel
Have a 2006 Jetta TDI which was bought used in 2008 width 80,000 K, has been back to the dealer for all regular oil changes and maintenance since it was bought.
At 139,000, at the dealers recommendation it went in for regular service and to have the timing belt changed. The vehicle had started chugging a bit, especially when it was cold, we were told that the camshaft was worn and the valves were burnt. Dealer estimate for repair is approx $7,000, as they are recommending changing the entire head. I don't belive they had the head off, so am not sure how they came up with the valve diagnosis.
I have attempted several times to work with VW Canada for assisstance with a repair that I feel I shoud not be happening with the low mileage. The best they would do is a $1,500 certificate towards the purchase of a new vehicle. (my used vehicle is worth nothing the way it sits, why would I buy anew one)
Long story short, I am going to atempt to do the reapair myself, have worked on farm tractor diesels but nothing this small and intricate. My question is there a repair procedure to follow to determine exactly what needs to be replaced and the special tools requirred to do the job?
Any feedback would be greatly appreciated.

Best regads Alex

P.S. Just getting used to the site, appears to be lot of good info.
 

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Welcome to the forum Alex. welcometomyturbodies

Well to determine if its the valves which will result in lack of compression you would need to do a compression check. This would mean obtaining a compression gauge for a diesel engine. They should be available for petrol engine at some auto store as they only screw into the spark plug theads and the gauge can measure pressures up to 200psi. With a diesel the pressures are higher plus you have no spark plug so you would need an adaptor that fits the injector.

Now a lack of compression on one or more cylinders will make the engine run uneven at all times, its like running the engine with a fauly injector so it runs on 3 cylinders depending on how burn it is. I would have thought to determine if the camshaft lobes are worn you could remove the cam cover of top of the engine and do a visual inspection. If you really want to be accurate then you would need to use a Dial Test Indicator (DTI) that would measure the lift on each cam so you could compare each result to see if one or more is less.

Now as for being quoted £7000 CAD (4,337.26 GBP) to replace the entire head is extorsionate. The only reason you would replace the head if it was cracked and couldn't be repaired all other parts in the head can be services, bearings, valve guides, valves etc

As for doing the job yourself you say you've worked on farm tractor diesels so I'm assuming you have a basic understanding of engines. I can't tell you if you need any special tools to do the job others on here can tell you that. ;)
 

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Discussion Starter #5
Thanks for the info. guys, from what I am seeing I should be able to get all of the information that I need on this site, with help from people like yourselves and the posted information.
Haven't had a chance yet but I will definitely look at the link.
Your help is much appreciated in avery frustrating situation.

Best regards Alex
 
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