lewis_willy2
02-09-2008, 07:01
http://www.dietersmotorsports.com/Compression-leakdowntest.htm
ok guys i seem to a little bit of low compression in one of my cylinders.
1 - 135
2 - 150
3 - 155
4 - 155
no cylinder 1 seems a little low. i have been advised to do a leak down test and listen to where the air is escaping from, as in the article above to prove where the problem lies.
now it has also been mentioned that i could do a compression test with oil in the bores. what is the theory behind this?
i havent got a leak down tester at the mo, so the oil in the bores and a compression test is my next stage. can someone explain exactly how this is to be done?
just to clarify this is on my williams turbo. i thought it was my turbo but upon inspection the turbo is in great condition. and with the turbo removed the blue smoke is still very much there after about 10 seconds of running. and relatively thick.
before putting in the pistons and rings i glazed the bores. the pistons i bought had already covered little bit of mileage so i am pretty certain that my problem probably lies in the rings?
the car has not yet been run for longer than a minute at the max. roughly around 8-10 times. so 8-10minutes of running, is this long enough. and am i panicking over something that may be cured with a bit of proper running time?
a great long post so if you got to the bottom then thanks for ready and if you have any suggestions thanks again
lewis
ok guys i seem to a little bit of low compression in one of my cylinders.
1 - 135
2 - 150
3 - 155
4 - 155
no cylinder 1 seems a little low. i have been advised to do a leak down test and listen to where the air is escaping from, as in the article above to prove where the problem lies.
now it has also been mentioned that i could do a compression test with oil in the bores. what is the theory behind this?
i havent got a leak down tester at the mo, so the oil in the bores and a compression test is my next stage. can someone explain exactly how this is to be done?
just to clarify this is on my williams turbo. i thought it was my turbo but upon inspection the turbo is in great condition. and with the turbo removed the blue smoke is still very much there after about 10 seconds of running. and relatively thick.
before putting in the pistons and rings i glazed the bores. the pistons i bought had already covered little bit of mileage so i am pretty certain that my problem probably lies in the rings?
the car has not yet been run for longer than a minute at the max. roughly around 8-10 times. so 8-10minutes of running, is this long enough. and am i panicking over something that may be cured with a bit of proper running time?
a great long post so if you got to the bottom then thanks for ready and if you have any suggestions thanks again
lewis