Oil leak and misfires

[OWNIT]

Do you think there's any merit to it possibly being an issue with the motor?


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[Lucas_R]

AudVolks always gets good feedback from other forum members: AudVolks website

Looks like its only 1-2 suburbs away from you too. Might be worth a try. The 2.0TSI engine in your Tiguan is used in a huge amount of VW/Audi/Skoda vehicles over the past 6 years or so. So any VW specialist should know this motor well.

[Lucas_R]

Do you think there's any merit to it possibly being an issue with the motor?

I very much doubt it considering it runs perfectly fine at times and only misfires at certain times. The problem will more than likely be to do with fueling or ignition (spark). But im not a mechanic and i haven't seen your car....so it's hard to know for certain.

[OWNIT]

I very much doubt it considering it runs perfectly fine at times and only misfires at certain times. The problem will more than likely be to do with fueling or ignition (spark). But im not a mechanic and i haven't seen your car....so it's hard to know for certain.

God I hope you're right....

[Lucas_R]

Do you know to what extent the inlet manifold and related parts was cleaned? I ask because although the actual inlet manifold is known to get oil and carbon build up forming over time, what can really start playing havoc on these engines is the carbon buildup on the intake valves, which is a side effect of direct injection engines. Do you know if the inlet valves were cleaned? If not, usually by around 100,000km (if never cleaned before) this carbon buildup on the valves can start causing misfires and poor running of the engine. In saying this, if you say the car has been misfiring since it was almost new then this may not be relevant?!?!

[OWNIT]

Do you know to what extent the inlet manifold and related parts was cleaned? I ask because although the actual inlet manifold is known to get oil and carbon build up forming over time, what can really start playing havoc on these engines is the carbon buildup on the intake valves, which is a side effect of direct injection engines. Do you know if the inlet valves were cleaned? If not, usually by around 100,000km (if never cleaned before) this carbon buildup on the valves can start causing misfires and poor running of the engine. In saying this, if you say the car has been misfiring since it was almost new then this may not be relevant?!?!

Not since it was almost new, since I've had it, which was around 100k.

Anyway, I spoke to the guy at audvolk and he was busy for the next month or so, but he did agree to talk to my mechanic to try and help, which was nice.

He came to the conclusion that it was most likely a timing chain. He charges around $2000 for the job and my mechanic will do it for the same price.

On Top of this, the rear main Seal is leaking and that needs to be done, so probably another $600-700

And the work charged so far is ~ $2300.

So whats the trade in value on these cars? Or how much will I get if I sell it after its all fixed?

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[OWNIT]

How much would a timing chain cost? $2k seems steep.


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[Lucas_R]

My mechanic has rough quoted me previously and said it would be around $2k. I already had the main issue - the timing tensioner changed along with all the other related components (the tensioner itself is only $100 or so, but then you need to buy a new timing case cover, new timing quides, new bolts/screws etc, and my plastic dipstick housing cracked (plastic rubbish) which was another $180). Then of course you have the labour component which is just as much if not more than the cost of the parts.

[OWNIT]

Now he reckons the chain seems pretty tight, though he's still to measure it to make sure it's all lined up properly etc.. The likelihood is that I'll end up trying to find another VW specialist to take our top that can get to it quicker than Audvolks

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[MGV]

I went to Volkspower in Burwood for a tune & a service another time (when I lived in Melbourne). Can recommend them.

[OWNIT]

So apparently when the PCV valve goes there's two other valves that can go along with it, and replacing those can be the solution to all my problems? Sound right to anyone in the know? It'd be good news because it'd be a lot cheaper than a timing chain...


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[Lucas_R]

So apparently when the PCV valve goes there's two other valves that can go along with it, and replacing those can be the solution to all my problems? Sound right to anyone in the know? It'd be good news because it'd be a lot cheaper than a timing chain...

I know of 1x other valve related to the PCV than can give some people grief - located at the back of the engine near the turbo. i believe it's referred to as the PCV outlet hose. It's certainly not a common fault though. I do believe that the actual section of pipe needs to be replaced as the valve on its own cannot be purchased.

[OWNIT]

I know of 1x other valve related to the PCV than can give some people grief - located at the back of the engine near the turbo. i believe it's referred to as the PCV outlet hose. It's certainly not a common fault though. I do believe that the actual section of pipe needs to be replaced as the valve on its own cannot be purchased.

I'll ask him tomorrow what the specific name of those valves are. He said they're about $380 combined

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[The One]

Hey mate.

Get the rear main leak fixed first, it creates a air leak in these 2.0l engines which is unmetered air and bobs your uncle = misfire. I do these all the time causing misfires, you'll probably find all your issues will be gone when you replace the rear main... $10 says the main seal is ripped apart and sticks to the crankshaft .

[OWNIT]

Hey mate.

Get the rear main leak fixed first, it creates a air leak in these 2.0l engines which is unmetered air and bobs your uncle = misfire. I do these all the time causing misfires, you'll probably find all your issues will be gone when you replace the rear main... $10 says the main seal is ripped apart and sticks to the crankshaft .

The theory is that once those two Valves are replaced, the rear main will have less pressure, and if the seal is still good it might not need replacing...


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