andybuff
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posted on 17/7/02 at 06:34 PM |
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smokey dohc
ive just got a j plate dohc thats a smoker the garage has recently put a re con head on so it isnt guides and stem seals compression good so i dont
think its rings any ideas lads?
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bob
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posted on 17/7/02 at 07:01 PM |
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Is it an auto?
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andybuff
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posted on 17/7/02 at 07:17 PM |
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no its manual mt75 box
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bob
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posted on 17/7/02 at 08:15 PM |
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Ask theconrodkid he's the mechanical brains
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Fatboy Dave
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posted on 17/7/02 at 08:51 PM |
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Quite probably worn oil control rings on the pistons. Wouldn't show on a compression test as the main rings are keeping the compression.
Also, get a leakdown test done (150psi put in the engine with the plugs out, see how much pressure is lost over time). Lets you know the head gasket
is OK and the head/block faces aren't warped.
Also, what were the compression readings, and were they all similarand within 5-10% of new? Did you do a wet test or just a dry test.
Dave
Stop the planet, I want to get off
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theconrodkid
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posted on 17/7/02 at 10:45 PM |
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What colour is the smoke?blue is oil,black is fuel,whiteish is brake fluid and white is water these engines are prone to trouble,best thing is to burn
it
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johnston
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posted on 18/7/02 at 01:36 PM |
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Brake Fluid!!!!!!!!! have i missed something
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Fatboy Dave
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posted on 18/7/02 at 02:44 PM |
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Yeah, facked mastercylinder/servos can let fluid be sucked into the inlet manifold via the servos vacuum line.
Pretty alarming stuff
Dave
Stop the planet, I want to get off
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johnston
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posted on 18/7/02 at 09:41 PM |
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never came across that 1 although i was told that brake fluid is a good way to see if the rings are shot if your low on compression
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