Engine Service

Side valve, 803, 948, 1098., 1275 and Vizard mods

Postby bmcecosse » Wed Oct 02, 2013 7:16 pm

Seems a pretty useless result to me - have it done properly and come back with the real readings.
 









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Postby rayprichard » Wed Oct 02, 2013 7:31 pm

Well thanks for that bmcecosse... would rather you not comment at all.
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Postby MM » Wed Oct 02, 2013 7:44 pm

bmcecosse is probably right - to get meaningful readings of compression, you need to use a gauge that measures pressure within the cylinders, not just a computerised calculation based on the current drawn by the starter motor!

The snag with the latter type of test is that if the battery is a bit weak, you'll initially get strong readings, then they'll falter as the battery flakes a bit.

You can buy a Gunsons compression gauge from Halfords for around £30, and they're well worth having as an aid to diagnose faults on most petrol engines. :wink:
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Postby bmcecosse » Wed Oct 02, 2013 8:39 pm

No more good  advice for you then Mr Pritchard !    Another one on my 'list'....  :lol:
 









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