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Help With Leak-down Testing

chef_stagea

By chef_stagea,
in South Australia

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chef_stagea Grand Master

chef_stagea

Posted
Posted

Hi all I need to do a leak down test tomorrow,

I've got a compressor, but done have the gauge n stuff, if anyone has one I can borrow tomorrow that would be great, or if it's just easyer to make one can some1 lead me down the right path. How big does my compressor need to be?

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https://www.sau.com.au/forums/topic/331418-help-with-leak-down-testing/
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RubyRS4 Grand Master

RubyRS4

Posted
Posted

How are you doing the test Adam?

If you've got the timing marks lined up properly now, no further harm should come from turning the engine over. So you can borrow my cylinder compression gauge which screws into where your plugs go. You may find the leaking cylinders will be either 1&6, 2&5 or 3&4.

Very low or no compression on those cylinders will signify where the bent valves are, but you'll need to physically inspect (for example) if its inlets on 1 and exhaust on 6 or vice versa.

:D

Big Fella Mentor

Big Fella

Posted
Posted

i'm not sure if you can buy them from total tools or repco, DIY version involves a gutted out old spark plug and a tyre valve brazed in. i'll have a look around at work tonight and see if we have one.

Ebay leak down tester

D_Stirls Veteran

D_Stirls

Posted
Posted (edited)

i've got a Brand New leakdown tester. Infact i have never used it yet.

Located in Campbelltown

EDIT!!

I just went out the garage to give the leak down tester a try on my spare engine and it's stuffed. Never used it and it's broken. NOT HAPPY.

The the tester not connected or with it connected but not with the fitting not screwed in the head it should read 100% leakage and mine reads 50%, and won't go below 50%.

Edited by D_Stirls

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