Used Audi Q5 What to look for

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06-16-2019, 05:17 PM

#31

Bob Petruska

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Quote:

Originally Posted by steveo688

Well, I ran the bore scope into all the cylinders and the cross hatch looks good. PCV looks to be all black though. Maybe I should run it up to the dealer and see what they say it needs and go from there. Is the newer firmware an update they can do or does that include the new pistons and rings?

I assume that you saw no cylinder wall scoring? That's great that the cross hatching is still there in case you need rings, and/or pistons.

The dealer can replace the PCV valve and updated firmware coding without changing rings/pistons. Hopefully the PCV and coding will solve your problem. It has worked for some in the past.

How much oil are you using?

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06-16-2019, 05:35 PM

#32

steveo688

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Quote:

Originally Posted by Bob Petruska

Can't say yet. Only had it less than a week. At first when I checked the oil level it said to lower the level. Rechecked it today and it was right at max. Going to keep an eye on it. And that's correct I saw no scoring. They looked very nice.

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06-16-2019, 09:00 PM

#33

apoelistas

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Black PCV:
First thing would be to update engine firmware, swap PCV with the dual colour one, and change crank front seal (stage 1 of oil consumption) ASAP. Then I would assume that you also have to carry out stage 2, new pistons with piston rings and new conrods (unless you have the correct conrods PN). Then really that would be it.