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Discussion Starter #1
So, I did this test on my engine, and it appeared that there was 35% leakage showing on the gauge. Still in the green. When we put some oil down in the spark plug hole, to seal the piston, there was no leakage. We're assuming the cylinder has become oblong.
Is this assumption accurate, or what are the other possibilities?
The test was performed due to the valves going out of spec so fast, we were trying to find out if there is a problem with the valves. referenced here: http://www.trx450r.org/forum/index.php?sho...mp;#entry480020
 

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So, I did this test on my engine, and it appeared that there was 35% leakage showing on the gauge. Still in the green. When we put some oil down in the spark plug hole, to seal the piston, there was no leakage. We're assuming the cylinder has become oblong.
Is this assumption accurate, or what are the other possibilities?
The test was performed due to the valves going out of spec so fast, we were trying to find out if there is a problem with the valves. referenced here: http://www.trx450r.org/forum/index.php?sho...mp;#entry480020[/b]
Did you warm the bike up to temp? What psi did you use? Did you hear air leaking any where?
 

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Discussion Starter #3
So, I did this test on my engine, and it appeared that there was 35% leakage showing on the gauge. Still in the green. When we put some oil down in the spark plug hole, to seal the piston, there was no leakage. We're assuming the cylinder has become oblong.
Is this assumption accurate, or what are the other possibilities?
The test was performed due to the valves going out of spec so fast, we were trying to find out if there is a problem with the valves. referenced here: http://www.trx450r.org/forum/index.php?sho...mp;#entry480020[/b]
Did you warm the bike up to temp? What psi did you use? Did you hear air leaking any where?
[/b]
I didn't warm it up. I just turned the comperssor on and plugged in the tester. Didn't hear any leaks.
 

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So, I did this test on my engine, and it appeared that there was 35% leakage showing on the gauge. Still in the green. When we put some oil down in the spark plug hole, to seal the piston, there was no leakage. We're assuming the cylinder has become oblong.
Is this assumption accurate, or what are the other possibilities?
The test was performed due to the valves going out of spec so fast, we were trying to find out if there is a problem with the valves. referenced here: http://www.trx450r.org/forum/index.php?sho...mp;#entry480020[/b]
Did you warm the bike up to temp? What psi did you use? Did you hear air leaking any where?
[/b]
I didn't warm it up. I just turned the comperssor on and plugged in the tester. Didn't hear any leaks.
[/b]
If it where me I would retest it but this time warm the bike up to op. temp, drain the oil(may sound dumb) and retest and lisen for leaks in the exhaust, full plug, and intake!!!! I've found that 35 psi works good to lisen for leaks!!!! If I hear leaks than I will turn up the pressure to find them.... will also do this if the gage reads high and I can't hear any leaks!!!!

Just trying to shed some light so don't take it wrong!!!!!
 
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