Compression gauge

[Jlg]

can anyone recommend a decent compression tester

 

[winchman]

I would buy an Ebay one then but a proper calibrated gauge, mines a Sykes one I think, hardly use it to be honest

 

[Jlg]

Is the laser one machine mart sell any good

 

[winchman]

Its all down to what you want, I feel the fittings will be a much of a much ness but the gauge could be the weak link, are you looking for precise figures or just a change between cylinders?

 

[frank horton]

also depend if it's for petrol or diesel......
my Sykes gauge's are now 40 years old.......I just use it as a comparison between cyl pressures.....ur normally just looking for disparity....
the first gauge, u just hold it in the plug hole (rubber bung), the second actually screws in the plug hole....had to make some converters tho for the diff plugs......

 

[Olderisbetter]

I have a Gunson one with all the adapters but i mainly use it to test all the cylinders are around the same pressure

 

[premmington]

+ 1 for Sykes...

I have a petrol Sykes one plus a Diesel Sykes one with threaded injector mandrels.

We have another two compression testers in my workshop - Sealey one with loads of glowplug adapters plus a really expensive Italian dummy CR dummy adjustable clamp in injector with a gauge on the top.


It has to be noted - compression testing is not the great diagnostic tool it used to be - we tend to use leak down testers more of late...

Compression testing is OK for non starters on diesels - but for misfires - leak down testing is king...

Sykes anything is good gear...

 

[Jlg]

It's for petrol and ideally it needs to be accurate I'm of to look at another jet ski next week but I need to test compression to see if it's worth buying as Kawasaki state that it needs a top end rebuild if compression is 115psi or less 115 and above and I'll be good for a year or two depending on how much higher it is

 

[dannyp]

Going to say haven’t used a compression tester in a long time now usally put an airline in cylinder using leftovers of last compression tester. Modern engines can give really really funny compression readings

 

[Jlg]

Going to say haven’t used a compression tester in a long time now usally put an airline in cylinder using leftovers of last compression tester. Modern engines can give really really funny compression readings

It's far from modern its a 98 or 99 1100 Kawasaki zxi