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Old 10-13-2018, 06:48 AM
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southcoasting southcoasting is offline
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A4 Teardown Begins!

All,
I have finally gotten a chance to start taking apart my replacement spare engine so that I can figure out why one cylinder was around 80 psi and not holding the pressure.

I'd like to avoid going any further than this in the tear down or rebuild since other cylinders came in at 100psi when warm.

Of course, I will be taking off some other parts as I will be stripping paint and repainting but would like to figure out the cylinder number 2 issue as it seems this engine is perfectly fine aside from that...

First thing I noticed was one gasket was used instead of two. Could that be a reason?

What else am I looking for here? I realized I had not removed the gasket from mating surfaces to closely inspect but will be doing so today and posting those pics for your inspection.

As far as valves, what am I looking for to see if they are the culprit?
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1971 Tartan 34C Sloop "NOVA LUNA", Rebuilt (2019) Fresh Water Cooled A4 (Bought boat in 2014)
1968 Tartan 27 Yawl "Destinada", rebuilt Old Lyme freshwater A4 (Sold boat in 2014)
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