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Hello, have a Craftsman walk-behind mower with Honda GCV 160cc engine. It starts on full choke only, and dies as the choke opens. If I hold the choke 3/4 closed it will run fairly well, but the engine then knocks when loaded in tall grass. I went through the carb and cleaned out some gray smutz in the carb bowl but it was not up to the level of the jet, so I don't think it was a problem. I removed and cleaned the jet with a small wire, and blew out all the passages with compressed air. Somehow as the choke opens, it seems fuel is reduced and cut off. But the severe knocking under load makes me wonder if there is ignition control as well as the throttle control on the governor. I haven't had the plastic engine cover off (yet) to see about ignition control. Suggestions?

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6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

#1 Taper
  • 1040 Answers

SOURCE: Engine only runs with choke full on. Dies when off full choke.

Hi Dave, it sounds crazy, but try this. Check your gas cap. It could be clogged, causing a vacuum to occur in the tank, and therefore not allowing the carb. to take on gas. It usually take 10-15 min. for this to occur. The next time you run the mower and it starts to stall out, loosen the gas cap and see if it begins to run again. If it does, then you know that the gas cap is clogged.

Jim

Posted on Jun 05, 2009

  • 22 Answers

SOURCE: 13.5 OHV B&S won't stay running, blows gas out carb.

Sounds like you have a blown valve. I'm assuming this is a 4 stroke motor, if it was 2 stroke then it would be the reed valves. But either way it's the valves.... unfortunately that will require a mechanic :(

Posted on Jul 19, 2009

  • 57 Answers

SOURCE: Engine won't run unless the choke is on - Deere 14SB Push Mower

It's starving for fuel. When you push the throttle all the way forward it closes the choke. You took it apart but you probably didn;t get all the junk out of it. Easy fix is to put some SeaFoam into the tank and run it. This cleans all deposits and debris from the jets. I have used this stuff and put it in the tank and start the engine and sit back and let it run. After about 5 minutes the engine will smooth out and run fine.

Posted on Jul 30, 2009

  • 1 Answer

SOURCE: Troy Bilt model 542(11a-542-q711)has Honda 160cc

I need Gaskets for caboretor

Posted on Sep 08, 2009

  • 10865 Answers

SOURCE: Honda 160cc mower engine starts and dies.

Your carbeurator is crudded up. Get a can of aerosol carbeurator cleaner at any auto parts store. Remove the air filter and spray two squirts of cleaner into the air intake. Start the engine and keep it running by squirting more carb. cleaner into the air intake. WIth a little patience you will clean your carb. and solve your problem.

Posted on Sep 14, 2009

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