What a great idea! I've never heard of anyone using this method, but it
makes a bunch of sense! I'm wondering if you could add some sort of
scent to the compressed air to aid in the leak detection....
Thanks for an excellent tip!
John
Mark A. Erickson wrote:
>
> Mark,
>
> Squirt a few shots of oil into the cylinders and recheck the compression.
> If it goes up you have ring problems.
>
> Or even better> remove the guts from an old sparkplug and braze in an air
> fitting (or if the hose on your compression gauge permits you to hook it up
> to an air compressor, use it). Remove rocker shaft (or lock each cylinder
> up in the TDC Position, with valves closed). Apply some air pressure. Then
> use your ear. Hissing out of the tailpipe, bad exhaust valve. Out the
> carbs, bad intake valve. Out the block, bad rings. While your at, it remove
> water pressure cap, hissing, bad head or gasket. Also checking at TDC and
> BDC will check for taper in (or worn) cylinder. Sorry, this tool will not
> check for worn bearings!
>
> One tool will tell you more about your engine then a whole tool box of
> other stuff. Valves, rings, head and gasket, and cylinders: your whole
> upper engine. In a few hours you will know the condition of and what to
> expect if you have to tear-down your engine.
--
Come see us on the Web!
http://www.jacksonville.se.mediaone.net/~suchak/home.htm
|