Posted by JDseller on May 09, 2012 at 07:07:37 from (208.126.196.144):
In Reply to: kawasaki 18hp posted by POPPY11 on May 09, 2012 at 04:33:34:
Some simple things to check. 1) I have had an exhaust leak cause the same issue. On a JD 265 garden tractor the thing would run like a top until I would put the hood back on it. I had the hood off to get to the carb. Finally had it running and felt hot air blowing up. Found a small hole in the muffler. It was making it too hot under the hood. Causing it to vapor lock.
2) Remove some of the air shrouds on the motor and see if anything is stuck in the cooling fins. I have had several that had stuff stuff in the fins. It made them run hot and act funny. Mice are bad about building nest in there. Even had a newer Kohler motor this spring come in with a bent push rod. I check it all over and could not see much wrong. Found the cooling fins plugged up. Got to looking found the heads where getting too hot and the valves would hang up. Then the push rods would fall out of the rocker arm.
3) you motor should have a fuel pump on it check to see if you have good pressure and flow.
4) Son just found this on his mower. The fuel line was falling apart internally and would not let fuel flow like it should. The mower would die an restart right back up and run a few more minutes to die again.
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