worn rings.?

[raj]

regarding a b18ft engine with alot of fresh oil on 2 sparkplugs.

with the head off, how can i know or test if the piston rings are worn.?

also the same for valve guides? im assuming you remove the valve springs and check if theres any side ways movement?

[Sparkie]

pour thin oil onto all the piston crowns then watch to see how quick the oil runs away past the rings.

[raj]

pour thin oil onto all the piston crowns then watch to see how quick the oil runs away past the rings.

ok thanks, so is it just a case of seeing if the 2 suspected sets of rings drop the oil quicker than the rest.?
should the oil not be able to get past the rings if they where ok?

[Scoff]

thin oil is going to be the best but if your an impatient sod you can put the same ammount of fuel in each bore instead, a problem will usually show up after a few hours then. I'll leave a bit of fuel in each pot over night or something. ofcourse, this method is only any good if you are planning on changing the oil afterward ;)

[THE MASTER]

thin oil is going to be the best but if your an impatient sod you can put the same ammount of fuel in each bore instead, a problem will usually show up after a few hours then. I'll leave a bit of fuel in each pot over night or something. ofcourse, this method is only any good if you are planning on changing the oil afterward ;)
deisel fuel is good for this test
it is a thin oil and will let you know if a ring set is on its way out but also derv will soften and clean out the carbon build up in the ringlands
:agree: