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Leak down question.


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alrsv1
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Leak down question.

Mon Feb 06, 2012 10:38 pm » Post: #1 » Download Post

Hello everyone,

I've read about the leak down test you can do to check the crank seal by pouring fuel/oil mix into the top of the engine and
see if it leaks out the bottom. So as I had the barrels and pistons out I thought I would do this. I poured some mixture in the
top engine opening (onto the crank) and left it for a bit.

So far it hasn't leaked. Now, how do I get the mixture out? Or I have I done it wrong?

Don't say turn it upside down. Smile

Cheers...

Al.
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anonymous.shyster
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Tue Feb 07, 2012 12:24 am » Post: #2 » Download Post

Take the crank out.

No, I'm joking. Get a syringe and a bit of hose and suck as much as you can out. Leave the rest to evaporate.
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toneless

 
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Tue Feb 07, 2012 1:33 am » Post: #3 » Download Post

I put a cockroach through the spark plug hole.
If it doesn't escape in 5 minutes then I call the leakdown test successful.

Sorry, no offense but I couldn't resist. Laughing

I reckon you will only be able to diagnose major air leaks on side oil seals with this method.
Use a syringe with a flexible hose at the end as already mentioned ...and lots of rags.

Aforementioned parts will be helpful for brake bleeding as well. Rolling Eyes
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