4.3 Mercruiser smoke from exhaust on compression test

easyloader

Seaman
Joined
Apr 25, 2014
Messages
68
4.3 mercuiser with EFI. I had the heads off due to water infiltration. Put boat back together and it now blows smoke. I retorque the heads after 20hrs and decided to do compreesion test with the exh maniflolds off. I noticed that the cylinder that I was doing the test on would blow smoke. see photo Otherwise the cylinders didn't blow smoke. Compression was even on all cylinders.
Any thoughts?
 

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
The photo didn't show up... When you say smoke, do you mean vapour, like water vapour? It's not uncommon to see vapour from cylinders after doing a compression test...
 

easyloader

Seaman
Joined
Apr 25, 2014
Messages
68
No Title

This is vapor during the test and on the cylinder that I'm testing. Hopefully you can see the photo now.
 

easyloader

Seaman
Joined
Apr 25, 2014
Messages
68
No Title

I'm getting a data base error while trying to add photo. I've changed the ext of the photo and hopefully it'll work this time.
 

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Try loading the photo to a site like photobucket and pasting a link here.
 
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