I would say you could not do a compression test in this state, you would need to put the sump on and fill with oil. You could however carry out a leak
down test on each cylinder by turning to TDC by hand. This would show any leakage paths in the valve train/ rings that would affect compression. I
would put some oil down the bores and on the crank and let it soak before turning if it has not moved in a while
Best way woulsd be a cylinder leak-down test, you will need a compressor, old style leak-down testers work at either 100psi many chinese ones now
work at only 1bar and will work with a 12v tyre inflator compressor. The dual gauge type are best the ultra cheap chinese ones usually work Okay
--- put will need some light oil down the bores and turn the engine over a few times to getting the rings sealing before you test . Redex or
Injector Cleaner or Dexron II Transmission work even better than oil.
[Edited on 11/8/17 by britishtrident]
Youtubes from the usual suspects
Paul "ScannerDanner" Eric O at SMA and Matt at Schrodingers Box
[Edited on 11/8/17 by britishtrident]
[Edited on 11/8/17 by britishtrident]
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
quote:Originally posted by coozer
Thanks, don't have a leak downer, all I was thinking was a sanity check to see if there was any massive callamerty waiting in one of the
cylinders..
Look at the prices on ebay --- the chinese ones are seriously cheap or you could just put low pressure air into the cylinder via a restrictor and
listen to where it comes out.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]