Compression Tester

[White Lightning]

Can anyone recommend a decent compression tester that is suitable for use on the 6A13TT please?

TIA

[elnevio]

I've just picked up a Draper one for about £25. Will be using it at the weekend, maybe! So I can report back if required.

[Nick Mann]

Most will fit. If possible, get one with a long plug adapter. Mine has a coupling on it which ends up in the spark plug recess by the time it is screwed home. That can mean awkwardness getting it unscrewed as the upper part rotates but the lower part doesn't!

[Davezj]

screw fix do a cheapish compression tester.

and has multiple adaptors to fit all spark plug bores, which may be a bad point as well as good, the last thing you want is to leave an adaptor in the plug bore when you unscrew the tester. make sure the adaptor is rock tight before fitting tester.

also make sure you have another car on hand to jump start yours once you have been cranking over to do the compression testing as it takes a lot of juice out of the battery.

oh one other thing, just disconnect the crank and cam sensor to stop the car stating.

[The Vee]

Indeed - as Nick says...

[White Lightning]

Thanks guys ... I see what you're saying Nick. Anyone know what size thread our spark plugs are?

[Davezj]

14mm diameter

[Eurospec]

Most will fit. If possible, get one with a long plug adapter. Mine has a coupling on it which ends up in the spark plug recess by the time it is screwed home. That can mean awkwardness getting it unscrewed as the upper part rotates but the lower part doesn't!

Yep- thats a good bit of advice!

You can get one from snap on, but it isnt cheap, or if you bring your car here wayne you can do it yourself and borrow ours.

I would strongly advise not using the ones with a wiggly pipe without the adaptor that nick mentions. I got one of these wiggly boys stuck in a head once because the wiggly pipe union just rotated on the end of the pipe and wouldnt grip the plug hole fitting. I did manage to get it out eventually without stripping the car down- but it took me ages! I was about 90 secs from going for head off!

Cheers,

Ben.

[White Lightning]

Thanks guys ... I am planning to go for this one as there seem to be more accessories easily available for the Gunson one. It's £33 inc. delivery and comes with a long reach 14mm adapter
http://cgi.ebay.co.uk/GUNSON-COMPRES...item335785226c

There is a better picture here but it's more expensive from Machine Mart:
http://www.machinemart.co.uk/shop/pr...tester-kit-6pc

[White Lightning]

And for those that are also looking in the future, there are better photos again here:

http://www.gunson.co.uk/item.aspx?item=3767