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Discussion Starter · #1 ·
What could cause cyl 1 to lose compression ? I know the basics of the gas motors . Just hoping for a different answer
 

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what testing has been done and what were the results?


 

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Discussion Starter · #3 ·
The code it sent me was a misfire on cyl 1 . I did a comp test on just the 1 cyl and got only 30 psi.
 

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That's very low, yes I am reading; the vw factory service manual spec is:

background image Compression Check:

Specifications

New ...................................................................................................................................................................................... 10 to 13 bar (145 to 189 psi)


Wear limit ................................................................................................................................................................................................ 7.5 bar (109 psi)



Maximum permissible difference .. 3 bar (43.5 psi)
 

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I would also do a compression test on all 4 cylinders, so you have a full scope of what's going on.
 
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