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Coleman powermate 5500 generator...has about 6 hours on it run time. it was sitting for 2 years unused. started up fine, ran with no problems. no more juice from outlets. opened up the front of generator and one side of the harness on the board had solder burnt off. re-soldered but still no juice. any ideas??
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First check with the
dealer and see if it is still under warranty. If it is not, make sure nothing
is blocking the air flow around where the control modules are located. This
could cause the voltage regulator and other electronic parts to overheat. Next
check the brushes and make sure they are free of any dust or build up preventing
them from making contact. If everything is OK the
next thing I would do is change the voltage regulator.
Gasoline goes stale after sitting a while and makes starting hard. Three years worth, it's more like jelly! You need to clean the tank, lines, filter, and carburetor. Run it for a while on a little fresh fuel after cleaning, then let it run out of fuel. That will remove most of the fuel from the carburetor. When you want to run it again, add whatever fuel you need, but allow it to run dry again. That's not prefect, but workable.
Sound like you've done things in the correct order, tecumseh's are notorious for carb problems if you let as sit in them. Backfiring is timing related (flywheel key) or valve problems. I would take a closer look at the exhaust valve I don't believe it is closing all the way.
I had a similar situation with a friends generator. After sitting around unused for a few years it would not generate because the residual magnitism was weak. I plugged a light into it and by using the throttle arm I breifly ran up the RPM and the light came on. DO NOT MAINTAIN THE HIGH RPM FOR MORE THAN A FEW SECONDS.
the gensets on coleman generators are definately nothing to brag about but i would start by checking the windings and make sure the brushes have a clean armature to ride on
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