NaterGator
On Gilligan's Island
Due to some unexpected cruiser troubles I had to drop it off at a dealership before heading out for a trip (second time this has happened, I should learn my cruiser problems always crop up right before a trip) so while it was in I had them run a compression test I'd been meaning to do. Anyways, I can smell the oil burning and if the exhaust wafts past through some setting sunlight I can see the blue tint to my exhaust (though it is not otherwise visible)... I'm running Rotella 10W-40.
So my compression test came back:
Cyl 1 - 170
Cyl 2 - 130
Cyl 3 - 170
Cyl 4 - 170
Cyl 5 - 170
Cyl 6 - 170
Cylinders 1,3,4,5 and 6 seem great. Cylinder 2 is definitely the outlier. When I finish this semester I gotta get it home and re-do the compression test myself and try adding a little oil directly to cylinder 2 to see if compression increases significantly, thus I would know it's the piston rings. That said, my service advisor is a very knowledgeable sounding guy but he left a voicemail saying my compression was within spec and the techs suspect it was valve seals.
I'm not sold *but* I want to know if there is any possible valve seal explanation for oil burning after only two or so hours of 'off' time and if anyone has encountered consumption from valve seals under operation. I've got a laundry list of things to do when school finishes (such as puck-spec checking) that may or may not help, but I'm going to put forth every effort to not drive it in case I've got a cylinder ring/bore problem in the chance there is anything I can do to salvage the motor I've got and not have to source a block whenever the hypothetical problem in #2 gets too severe.
Could use some advice from the shadetree experts.
So my compression test came back:
Cyl 1 - 170
Cyl 2 - 130
Cyl 3 - 170
Cyl 4 - 170
Cyl 5 - 170
Cyl 6 - 170
Cylinders 1,3,4,5 and 6 seem great. Cylinder 2 is definitely the outlier. When I finish this semester I gotta get it home and re-do the compression test myself and try adding a little oil directly to cylinder 2 to see if compression increases significantly, thus I would know it's the piston rings. That said, my service advisor is a very knowledgeable sounding guy but he left a voicemail saying my compression was within spec and the techs suspect it was valve seals.
I'm not sold *but* I want to know if there is any possible valve seal explanation for oil burning after only two or so hours of 'off' time and if anyone has encountered consumption from valve seals under operation. I've got a laundry list of things to do when school finishes (such as puck-spec checking) that may or may not help, but I'm going to put forth every effort to not drive it in case I've got a cylinder ring/bore problem in the chance there is anything I can do to salvage the motor I've got and not have to source a block whenever the hypothetical problem in #2 gets too severe.
Could use some advice from the shadetree experts.