I'm having some problems with my G705 LP. Plowed with this tractor two years ago with no issues, been using it at tractor pulls since. Last weekend I went to a plow day
with it, and as soon as it got good and warmed up, maybe 1/4 mile with the plow, it started backfiring and missing. As soon as it idles for a bit, it pulls fine again.
Figured it was an ignition problem, so I replaced the points system with a new GM HEI setup that I've had around, along with new wires. Went to another plow day today,
and had the exact same problem. Took out the plugs and gaped them to .050 for the HEI, but no change. I haven't replaced the plugs, but I would be surprised if that's the
problem. They look fine. It seems to me that if it's a fuel problem, it would just lose power, not backfire. I'm thinking I may have a thin valve edge that's getting hot
enough to cause pre-ignition, or possibly a valve or two sticking when it gets warm. Anybody familiar with this problem, or have any suggestions?
with it, and as soon as it got good and warmed up, maybe 1/4 mile with the plow, it started backfiring and missing. As soon as it idles for a bit, it pulls fine again.
Figured it was an ignition problem, so I replaced the points system with a new GM HEI setup that I've had around, along with new wires. Went to another plow day today,
and had the exact same problem. Took out the plugs and gaped them to .050 for the HEI, but no change. I haven't replaced the plugs, but I would be surprised if that's the
problem. They look fine. It seems to me that if it's a fuel problem, it would just lose power, not backfire. I'm thinking I may have a thin valve edge that's getting hot
enough to cause pre-ignition, or possibly a valve or two sticking when it gets warm. Anybody familiar with this problem, or have any suggestions?