Muffler started popping on my GX 690 It’s the Honda muffler.
Could it need a carburetor clean out or fuel filter change? Or something else?
Anyone know what it could be?
Is it happening while running or only throttling down to shut off?
If it have an electric fuel solenoid it may not be working correctly any longer.
while running
Does it bog down when this happens? Any smoke? It could be a bad coil, or as @PPWofLexSC suggested, it might be the fuel solenoid. Before considering those possibilities, try the following steps: clean the carburetor, check and replace the fuel filter and fuel lines, inspect and replace the spark plugs, reset the carburetor jetting, and check and adjust the valve lash if necessary.
no smoke or rough idle it’s backfiring when in bypass
I’m staying with the train of thought that a cylinder isn’t firing properly, when you kick into bypass the engine load changes and causes a backfire.
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Sounds like it’s running rich or poor combustion, have you ever replaced the spark plug?
Sounds like valves need adjusted to me.
I ran the machine for 20 minutes this morning with no backfire. I wonder if it’s the gas that’s not good and when the tank got low it had contaminants in the gas.
Possible. So it stopped doing that with fresh gas?
It was the same gas I put more in the tank I ran 50’ of hose this morning only and yesterday it was a tangled up 200’ maybe the hose being tangled yesterday put back pressure on the pump
You mean the garden hose?
If you think you had bad gas, why did you put the same gas in again??
no I was talking about the pressure hose
also it was the only gas I had available so I wanted to confirm that it was backfiring
when in bypass only
