handirifle
Veteran Member
I just bought (yesterday) a Murray riding mower from a private party. The guy said he had just spent $200 on maint items, plugs, new battery even new brakes on it.
I tested it and everything worked fine. Engine had a little pop every now and then, but so does my Husqy push mower, so no biggie. Plenty of power etc. So I bought it. Took it home and got about 75% of my 3 acres mowed, when it started backfiring, and wouldn't fun below half throttle.
It's a 20hp Briggs n Stratton, engine mod 460 777 type 1877 A1, and I already did some research on it. It is the opposed cyl engine, not a v-twin. Pulled flywheel nut to look at keyway, it looks perfect. Then I did a compression test. The cyl on right (passenger) side has about 100lbs, but the left side has ZERO.
What's the most likely culprit here? I didn't hear anything sounding like it broke, and nothing rattles.
What's a rebuild likely to cost?
I tested it and everything worked fine. Engine had a little pop every now and then, but so does my Husqy push mower, so no biggie. Plenty of power etc. So I bought it. Took it home and got about 75% of my 3 acres mowed, when it started backfiring, and wouldn't fun below half throttle.
It's a 20hp Briggs n Stratton, engine mod 460 777 type 1877 A1, and I already did some research on it. It is the opposed cyl engine, not a v-twin. Pulled flywheel nut to look at keyway, it looks perfect. Then I did a compression test. The cyl on right (passenger) side has about 100lbs, but the left side has ZERO.
What's the most likely culprit here? I didn't hear anything sounding like it broke, and nothing rattles.
What's a rebuild likely to cost?