Vehicle & Technical > Defender

compression tester

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range17:
hello ,got the use of a compression tester this weekend has anyone got any tips on how to use it ,its for my 200tdi defender by the way.

Cheers Rob.

hobbit:
I presume its a diesel tester you have, the compression ratio on your engine should be 19:1, if the readings through the pots are around that, you are ok

If they are down or erratic, that will diagnose which pot is at fault, after the initial test if some are down, try a squirt of engine oil in the bore and re test them, if the pressure goes up, its more than likely rings, if not it will probably mean a cylinder head problem

range17:
Thanks for that Kev ,it is a diesel tester ,doing test tom (sunday) hope the head gasket has gone really cause there is alot of smoke  :?

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