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I recently bought an 03 MDX on the cheap, it ran and drove, but had some noise in the engine. Compression test showed low compression in front bank, with #5 worst at 110 psi dry. 4 and 6 around 150. Back bank all 195 to 205.

Checked timing marks and they appear to line up. Can miss adjusted valves account for low psi? PO had a valve adjustment recently completed.

Incidentally wet compression test had 4 and 5 jump by 20 and 30 psi and that was marvel mystery oil not 30w as recommended.

So thoughts on compression numbers and possible valve adjustment?

And I am looking for a service manual for this 2003 MDX. I know helpless had an expensive one, Haynes had an eh one. Anyone have or know anything about one from Acura Honda PDF Service Repair Manuals Download - AutoManualSource ?

If there is a pdf one available, please pm me a link, I'm not opposed to sharing of manuals.

Thanks
Bratcop

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