StihlNAlberta
ArboristSite Member
OK ... here are a couple general questions that could relate to any model/make.
1. After the installation of a new top end (P&C), i wanted to do a pressure test to ensure a good crank/carb seal. Rings are not seated yet but this should not effect the test I am assuming. Where should the piston be to get an accurate reading, or does it matter? I still can't get the case to hold pressure.
..... I have tried soapy water everywhere and cannot find an air leak. It pressures up and slowly drops off. Think I'm gonna try and remove and plug the decomp. valve hole even though the decomp. valve is brand new. May take a bit to get a bolt with the correct threads.
2. Bearings. Seems like most if not all OEM crank case bearings are open not sealed, and by this I mean you are able to see the ball bearings and are able to grease or service these. Most companies who manufacture bearings (IE 6202) now come with a plastic sealed non serviceable bearing .... any reason NOT to use these in your case? My thinking is that it may give you the potential for a better case seal.
1. After the installation of a new top end (P&C), i wanted to do a pressure test to ensure a good crank/carb seal. Rings are not seated yet but this should not effect the test I am assuming. Where should the piston be to get an accurate reading, or does it matter? I still can't get the case to hold pressure.
..... I have tried soapy water everywhere and cannot find an air leak. It pressures up and slowly drops off. Think I'm gonna try and remove and plug the decomp. valve hole even though the decomp. valve is brand new. May take a bit to get a bolt with the correct threads.
2. Bearings. Seems like most if not all OEM crank case bearings are open not sealed, and by this I mean you are able to see the ball bearings and are able to grease or service these. Most companies who manufacture bearings (IE 6202) now come with a plastic sealed non serviceable bearing .... any reason NOT to use these in your case? My thinking is that it may give you the potential for a better case seal.