Magic; Gumout fixes Honda GCV160 lawnmower engine! - PeachParts Mercedes-Benz Forum

merc lover · #1 03-20-2021, 02:08 PM

Just thought I would share. At the end of every summer, I put STABIL fuel storage stabilizer into my lawnmower's Honda GCV160 engine's fuel tank. I then turn the fuel valve to OFF and run the engine until it dies. Normally, this keeps everything working until the next lawn season.

This year, for some reason this approach didn't work. The lawnmower gagged and died repeatedly. I bought a new carburator thinking it needed replacing. Then yesterday, BRAIN FLASH, I thought about two bottles of Gumout fuel system treatment I had sitting on the shelf.

So......I placed a larger than usual amount of Gumout fuel system treatment into the engine's fuel tank and fired that mother up! Ran it for about ten minutes and VOILA! lawnmower now runs like a NEW sewing machine! Gumout saved me two to four hours labor replacing the carburator!

Gumout was developed during WWII to keep our tanks and jeeps engines from gagging after the long trip by ship to europe. Amazing stuff!

https://gumout.com/fuel-additives/fuel-system-cleaner/

barry12345 · #2 03-20-2021, 05:53 PM

I have issues with solvents. I use laquer thinner but limit the exposure time. Carbs in the day did not have plastic floats for example. Millions of carbs got rebuilt when a short exposure of solvents fed into them and allowed to soak some. Cleaned up the mess.

If a carb was working well before you left it unused for an extended period. Most times the gas has just evaporated leaving a residue behind. I use laquer thinner because the engine will also run well on it after the soak. More zenith carbs have given problems that you can shake a stick at.

If you pull the idle jets and nothing or little is coming out. Introduce straight thinner as fuel. Usually a twenty minute soak will dissolve the mess. The jets will start to flow well.

Technically a Carb in storage is to be filled with very light oil. Nobody does it. A damp storage location can start oxides forming in small passages as well.With a dry carb. The card bodies are not pure aluminum so I cannot call it aluminium oxide but it is simular. You cannot get that stuff chemically.

Tony H · #3 03-24-2021, 01:31 AM

I have a Honda powered mower I bought on CL cheap-it runs really well but is a pain to start cold. I will give that a try. I have been giving it a shot of propane to start it. Another tip-shut it down by closing the throttle (with the little governor lever on the side of the engine) instead of shutting it off. Keeps the oil from turning black from fuel contamination caused by full throttle no ignition shut down.