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View Full Version : Question 2009 Audi A3 tdi cabriolet - over boost & low compression...help



EMCKAUDI
28-05-2015, 07:05 PM
Evening all

I am a newbie to the forums (have read many but never posted until now)

My Audi A3 cabriolet has been struggling with power loss over the last few weeks, sometimes it's feels fine and sometimes I can't even overtake (especially when up hill). It's been to a mechanic who first changed the MAF sensor and cleaned the EGr and replaced fuel filters which had a slightly positive effect. When diagnostics were run the turbo over boost code came up but no engine lights.

Anyway car went back in today and after a compression test one of the cyclinders has a PSI of 30, he tells me that the piston had gone and that it would mean pulling the whole engine apart, he's a friend of a friend and isn't trying to make cash out of me - in fact he suggested I get rid of it asap but was hoping that someone on here may have had a previous experience and could advise whether it could be something else?

cheers in advance