Hi all, I was given this motor from a relative of my wife. Said they used it once or twice a year for the past 4 years. Ran it once last year. Pretty sure they didn’t winterize it, so old gas sat in it.
I’ve rebuilt the carb, new plugs (j4c champions), new head gasket. Fuel pump pumps strong, pump screen is clean, there is gas all the way into the float bowl of the carb, compression is at 110psi(top cylinder) 106psi(bottom cylinder), when the cylinder head was off I tested the spark plugs with the head grounded to the block and had spark from both plugs, even pulled each plug and tested them individually and each had spark. Plugs are gapped to 0.030. Has electric start.
Can’t get this thing started. If I hold the starter down and feather the throttle plate on the carb it’ll turn over and run for a few seconds and then backfire die. Can only do this once or twice then it won’t even do that. When I rebuilt the carb I didn’t bother with taking out the metal plugs because it really didn’t look that dirty. I sprayed carb cleaner into the low idle hole and cleaner came gushing out the three small holes at the top of the main carb body.
What else can I try? I’m getting compression, gas and spark. Really stumped here.
EDIT: Model 18002E
I’ve rebuilt the carb, new plugs (j4c champions), new head gasket. Fuel pump pumps strong, pump screen is clean, there is gas all the way into the float bowl of the carb, compression is at 110psi(top cylinder) 106psi(bottom cylinder), when the cylinder head was off I tested the spark plugs with the head grounded to the block and had spark from both plugs, even pulled each plug and tested them individually and each had spark. Plugs are gapped to 0.030. Has electric start.
Can’t get this thing started. If I hold the starter down and feather the throttle plate on the carb it’ll turn over and run for a few seconds and then backfire die. Can only do this once or twice then it won’t even do that. When I rebuilt the carb I didn’t bother with taking out the metal plugs because it really didn’t look that dirty. I sprayed carb cleaner into the low idle hole and cleaner came gushing out the three small holes at the top of the main carb body.
What else can I try? I’m getting compression, gas and spark. Really stumped here.
EDIT: Model 18002E
Last edited: