A&Q about 350Z
Q:
As per title really, how would a garage diagnose piston ring wear? Just want to check i'm not being bluffed here for a massive bill! Car uses about 1 litre of oil per 1000 miles and is a bit smoky.
If it is piston ring wear then i presume thats new rings, perhaps a rehoned block, head gasket, oil pump, camblet and tensioner as a minimum? If so what sort of idea on price to do the work?
Thanks,
Nic
A:
It would use lots of oil like you say, and the compression may be down on affected pots also there could be fuel in the oil.
A:
whats the milage...chances are valve guides would be worn first
A:
150k miles, haven't had a compression test done yet.
How i tell fuel in the oil?
A:
Get a leak down test done that will tell you if the rings are Donald Ducked.
A:
Compression test will highlight a problem but won`t tell you what exactly it is.
Head off is only way to know 100%
A:
Ok thats great thanks.
For a 1.8 16V (KR engine) what parts would i need for a rebuild?
Thanks,
Nic
A:
Do a compression test first (whith a cold engine). Record the results and then pour a drop of oil into the cylinder and repeat the test. If the results are significantly different then the piston rings are worn.
Brunty
A:
A leakdown test is the proper way to do it..........
A:
Get a leak down test done that will tell you if the rings are Donald Ducked.
Ooops, I should really read threads before replying........
A:
another indicator can be excessive oil in the breather system due to blowby. check where the breather pipe goes into the airbox, slightly oily isn`t an issue, if its drowning then its likely the rings aren`t too healthy