I have a Kawasaki 19-hp FH580V engine on a Graveley Promaster 44Z mower. Both have worked flawlessly for eight years.
Suddenly, the engine has started running rough after running for approximately 25 minutes. If I let it cool down, it runs fine again while mowing for another 25 minutes or so. I repeated this pattern three times.
I think the fuel is fine. The mower has two tanks. The hoses hat draw fuel from the tanks don't appear to be cracked and the screens are clean. The air cleaner is clean, though I plan to replace it. Fuel is visible in the in-line fuel filter, but I plan to replace that also.
I haven't checked the plugs.
Could the problem be a coil or a poor electrical connection or ground?
Would a fuel pump problem come and go like this?
Suddenly, the engine has started running rough after running for approximately 25 minutes. If I let it cool down, it runs fine again while mowing for another 25 minutes or so. I repeated this pattern three times.
I think the fuel is fine. The mower has two tanks. The hoses hat draw fuel from the tanks don't appear to be cracked and the screens are clean. The air cleaner is clean, though I plan to replace it. Fuel is visible in the in-line fuel filter, but I plan to replace that also.
I haven't checked the plugs.
Could the problem be a coil or a poor electrical connection or ground?
Would a fuel pump problem come and go like this?
Kawasaki 19-hp FH580V engine suddenly started running rough when hot.
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