No compression Cylinder 2

40

Asked by AudiChic Oct 04, 2018 at 09:14 AM about the 2005 Audi A4 3.0 quattro Cabriolet AWD

Question type: Maintenance & Repair

I have a 2005 Audi A4 cabrio 3.0 that
is misfiring and shop finds no
compression from Cylinder 2. They
are telling me I need a new engine.
Truth or not?

6 Answers

42,710

Lack of compression on one cylinder could be a bad piston (major) or just a stuck valve/broken spring (minor). Try to get a more accurate diagnosis before buying something expensive like an engine. Only an real engine shop will tackle with "tear down" engine repairs if it's only a valve.

1 people found this helpful.
Best Answer Mark helpful
40

Thank you, Hornet - will do. Could driving into a major pothole cause a broken spring? That's when the shuddering started.

1 people found this helpful.
42,710

Major pothole could break a suspension spring but not a valve spring. When I said "spring" I was thinking engine valve spring. Sorry. Okay, now if that shuddering started after hitting a pothole, you may want the car to be checked for engine damage from underneath like a damaged engine oil pan and anything else damaged. You might be able to make an insurance claim if you car crashed into unrepaired/unmarked road hazard.

1 people found this helpful.
40

That's exactly the point, as car was driving fine before I hit the pothole and the cabrio is low. I definitely heard it hit metal. Really helpful. Thank you!!

1 people found this helpful.
40

What is the cause of the loss of compression in the cylinder?

2 people found this helpful.

Your Answer:

A4

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