white halftrack
Member
As I have previously written I picked up a Massey 165 Perkins gas. Runs but poorly. Good spark. No blowby but misses. It had been sitting for about 4 years. I have started and idled it but did not drive it due to a bad rim. Once again I have really appreciated the help. Thanks for being here.
This is what I have done. I can hear air leaking out the exhaust at idle. I thought stuck valve so pulled the valve cover. Everything at first glance looks good. I then started it and all valves moved and all had clearance from valve to rocker. Did not measure but when one valve open there was clearance.
I checked compression. My gauge appears ok.
1. 170
2. 65
3. 170
4. 175
As I said I can hear air hissing at exhaust. I did not look at the springs specifically. I tested it warm with all plugs out full throttle.
Will this come out of it as it might have some carbon or rust on it? Burnt valve? Broken spring? I hate to pull the head if I don't have to and no there is no blowby. Any ideas?
Thanks.
This is what I have done. I can hear air leaking out the exhaust at idle. I thought stuck valve so pulled the valve cover. Everything at first glance looks good. I then started it and all valves moved and all had clearance from valve to rocker. Did not measure but when one valve open there was clearance.
I checked compression. My gauge appears ok.
1. 170
2. 65
3. 170
4. 175
As I said I can hear air hissing at exhaust. I did not look at the springs specifically. I tested it warm with all plugs out full throttle.
Will this come out of it as it might have some carbon or rust on it? Burnt valve? Broken spring? I hate to pull the head if I don't have to and no there is no blowby. Any ideas?
Thanks.