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TO-30 Surging under load

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PostPosted: Mon May 21, 2007 4:25 pm    Post subject: TO-30 Surging under load Reply to specific post Reply with quote

I did some searching, but wasn't sure if I am having the same problems as others. While brush hogging, if I hit some heavier loads my motor will start to quickly vary rpms up and down. the only way to correct this problem is to give the throttle a lot of gas and gas it out of the surge. I can also overcome this issue if I pull on the choke. I have tried to adjust the carb a bit but I have had no luck, just akes it worse. Could this be a governor problem? if so how do I go about adjusting the governor. thanks

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PostPosted: Tue May 22, 2007 9:00 am    Post subject: Re: TO-30 Surging under load Reply to specific post Reply with quote

Surging can be cause by too lean a mixture. Since you getan improvement with the choke, that could be your problem. Did you try to enrich the mixture? Turn the power jet screw(the big screw over the fuel bowl)out an eigth of a turn at a time and see if that improves it.

You may have an air leak around the carb metering section that is the root cause of this problem. It can be at the carb throttle shaft, at the connect flange between the carb and the intake manifold or between the head and the intake manifold. It can aslo be caused by a cracked manifold. Take some starting fluid and with the engine running CAREFULLY spray around the throttle shaft, the conect flange and the manifold to head connections. If the engine speeds up when you spray in a particular area, you found the leak.
I would urge you to correct this problem ASAP as the exhaust valves can be burned from running too lean.


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PostPosted: Tue May 22, 2007 2:15 pm    Post subject: Re: TO-30 Surging under load Reply to specific post Reply with quote

ok thanks for the help, ill check that out asap

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