Compression gauge...

dextersaurus · World Chat Champion Joined: 25 Mar 2009 Karma :

Okay guys, i feel retarded as hell right now.

Just bought a compression gauge to see what's wrong with my GPZ, and i can't for the life of me figure out how it works.

It's got the wee release bit so you can reset the needle next to the actual reading bit, and then a long hose witha valve, and loads of connectors.

https://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=190373995171&ssPageName=STRK:MEWNX:IT

That's it.

i've tried threading it into the spark plug hole, and turning it over, but i don't get a reading.

Someone help me Sad

Cheers
Dunc

DaveH · World Chat Champion Joined: 03 Feb 2006 Karma :

Should just screw into the spark plug hole, making it air tight, then turn it over on the starter.

If there is no reading, try a little oil down the plug hole to see if it reads any better then.

Not sure what you mean by the wee release bit - is it open and the air is escaping here?

This any good, can't view it at work

https://www.youtube.com/watch?v=9U8iNb21arw
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Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

Normally screw in and then crank over on full throttle. Normally the thread has a rubber O ring to help seal it so you don't need to screw it in too tight.

All the best

Keith
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steven_191 · Nearly there... Joined: 31 May 2009 Karma :

I have the same one. Screw the adaptor in with the o ring as mentioned to make it air tight. Push on the hose and crank it over at open throttle. There is a pressure release at the base of the gauge which would be the first place to check for leaking. Maybe the gauge is knackered. If you turn it over a few times then press the pressure release and nothing comes out then there is no pressure. Either a leak in the hose or guage or your engine needs a rebuild. Try it in all cylinders and compare. Might need to replace the kit if you can't sort it out

Ariel Badger · Super Spammer Joined: 02 Dec 2006 Karma :

Open the throttle and then try.
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