Trying to get to the bottom of low compression on my engine... I have various gauges and bits and bobs lying about so gonna try and make a tester of some sort. First off will a high pressure gauge from an injection fuel regulator work with air instead of liquid?

IIRC Britishtrident may have posted details on a diy leakdown tester?

Yes, found it. some great info on this site!
Have all bits to make something up if i get some pipe, just wondering bout the gauge and if it will work on air not liquid..?

Got a link?? I couldn't find it.

http://www.locostbuilders.co.uk/viewthread.php?tid=34279