- Sep 12, 2014
- Reaction score
- Modena (motor valley) Italy
you could check the compression for each cylinder to understand where the leaks are ,valves or piston ringsI also purchased this vacuum pump to test the valves after the repair. For the repair i made a cutter with a Pilot pin.
The comercial plugs are t pricy so i decided to make my own. Besides this ist a Hobby a making parts is fun. The plugs worked nice but after some tme they get wet and stoped firing.
Some time i noticed the valves leaking. i bet the maine Problem where the valves.
Still have a new set plugs that i will test when the engine is together again.
That is an cute little pump!!
I did mine as gearpump. Because the hole crank has ball/needlebearings the pump is only used to feed some oil into the head and lubricate the cam and followers.
To do the compression test, better use a small pressure gauge with a one-way valve (e.g. bicycle tire valve) limiting the internal volume as much as possible so as not to increase the volume of the combustion chamber and get an incorrect value.