stretch5881
Member
- Joined
- Mar 17, 2018
- Threads
- 1
- Messages
- 12
Howdy all,
I was given this Scott's tractor a year ago with a scattered engine. I've collected the parts and did a full rebuild. I am also experienced as a small engine mechanic.
B&S 20hp V-twin. 406777. It starts right up. The rpms bounce around a bit. Random misfires through the intake at all rpms. After it warms up, it pukes oil from the vent into the carburetor. I've been working on this issue, off and on, since last fall.
Parts besides a full rebuild are a new vent and an aluminum intake manifold.
It's not broke in yet and compression dry is 165# on both cylinders. Wet test is 175# on both. Leakdown test is 100# in, cylinder #1 holds 95#, cylinder #2 holds 97#. I don't hear any leakage past the valves.
I have disconnected the grounds from the coils, nothing changes.
Any suggestions?
I was given this Scott's tractor a year ago with a scattered engine. I've collected the parts and did a full rebuild. I am also experienced as a small engine mechanic.
B&S 20hp V-twin. 406777. It starts right up. The rpms bounce around a bit. Random misfires through the intake at all rpms. After it warms up, it pukes oil from the vent into the carburetor. I've been working on this issue, off and on, since last fall.
Parts besides a full rebuild are a new vent and an aluminum intake manifold.
It's not broke in yet and compression dry is 165# on both cylinders. Wet test is 175# on both. Leakdown test is 100# in, cylinder #1 holds 95#, cylinder #2 holds 97#. I don't hear any leakage past the valves.
I have disconnected the grounds from the coils, nothing changes.
Any suggestions?