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Formerly weebeastie
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1,415 Posts
Either dead rings or you bent valves. I'm going to go for rings because bent valves would've died in its tracks. However, stuck or cracked rings could cause the same issue. Have you check valve lash cold? Might start there. Not just I felt lash, but I made sure that they were all lashed properly.

Once you prove valve lash to be good, then its either burnt/bent valves or rings. Next step would be to pull the head and look.

My vote is that if it was a d16a6, you either replace it with a SOHC ZC or a DOHC ZC and happy motoring, then pull down your A6 to figure out what is wrong with it. Pull the head and find some valve carnage, you can buy valves and lap them in. If the valves are good, then most likely rings.

Did you bore it or just hone it? Did you check ring end gap prior to assembly?
 

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Formerly weebeastie
Joined
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1,415 Posts
Hey, you know what you should do? Check the timing belt.........


LOL, just thought I'd also join the band wagon


But seriously, if the tensioner let off and it slipped immediately while cranking you'd have this problem. I had a tensioner bolt actually break off one time. The actual block broke. You likely don't have that issue, but pull the upper timing cover and line it up to see.
 
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