GCV530. Power Loss.

10 years ago

HI have a Honda Hf2216 mower with a GCV530 motor and iI start it up and begin to mow she works great. has started to give me some bother. When i engage the deck and begin mowing she works great for about 5 minutes then suddenly the engine note changes. She runs much rougher and there is a distinct loss of power. Sometimes it rights itself after a while and sometimes not. So far Ive replaced the air and fuel filter. Replaced fuel lines. Cleaned carb a few times. Set valve clearances. Replaced diode matrix. Replaced both ignition coils. Im starting to run out of ideas.
What i do notice is that this problem seems to happen when travelling uphill under load. Any ideas would be greatly appreciated.

Shay

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Comments (5)

bill_kapaun
10 years ago
Gas cap vent plugged?
shaymey
Original Author
10 years ago
Never thought of that. I'll check it out. Cheers.
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shaymey
Original Author
10 years ago
Never thought of that. I'll check it out. Cheers.
shaymey
Original Author
10 years ago
Well its not the fuel cap vent. It happened again today and I whipped the cap off to see would things settle. Still ran rough..

Shay
bill_kapaun
10 years ago
Your symptoms seem to indicate partially restricted fuel flow.
It get's enough fuel when under no load conditions, but the carb bowl level slowly decreases under load, when the governor is "opened up" and the engine requires more fuel.

IF the problem disappears when allowed to idle for awhile, it would tend to confirm that.

Did you use the correct fuel filter?
I don't know if that engine has a fuel pump or not, but IF it's a gravity fed carb AND you used a more restrictive filter designed for a fuel pump engine.....

Could you have messed up on the carb and gotten the needle in wrong (like upside down)
That could "possibly" cause some flow, but not enough under load.
That's a somewhat unlikely scenario though, BUT- IF you have a gravity flow system, smell the oil for the presence of gas since it would tend to keep leaking through while the engine sets and eventually end up in the crank case.