TO-30 Carburator Problem

Bob3maples@gmail.com · Apr 4, 2015

I can't start my TO-30. It was running well last year, then developed some rough spots, I could make it work by pumping the accelerator. Eventually it stopped working entirely. Replaced the bowl separator, and Cleaned the carburetor myself, but it didn't help. Had the carburetor rebuilt, and now it won't start at all. If I spray ether, it will fire, so I suspect electrical is working. Did I read that the filter mesh the re-builder installed in the gas feed adapter could be a problem? Or do I need to look at something else?

steve19438 · Apr 4, 2015

not being a smart a but do you have the fuel turned on ?

Bob3maples@gmail.com · Apr 4, 2015

(quoted from post at 14:11:40 04/04/15) not being a smart a but do you have the fuel turned on ?

Yep. Not every time but most of the times. It seems to make no difference. Tried many times over past few weeks. Too cold earlier to do much work but today I took carb off. Looked at the screen in the ell adaptor for the fuel line and wondered. This is just gravity feed so maybe it isn't ok?

wellmax99 · Apr 4, 2015

http://www.external_link.com/M_S_TSX_Carburetor.html

if it is a M S carb, look over this information, maybe something in the write up will help.

if there is a drain plug on the bottom of the carb, can you remove the plug and fuel will flow out of the bottom of the carb.

if so, then you have all your fuel filters clear, also must have a vented fuel tank cap,

when turning the motor over, you are getting a good hot strong spark????

Tony in Mass. · Apr 4, 2015

Like a plumber, crack open the joints between the sediment bowl and that bronze screen filter you mentioned, from there it is suppose to flow to the float needle.
Sometimes the float gets hung up, and if it hung up on your new gasket, nothing will flow into the bowl. Sometimes the needle is stuck in its seat, no end of possible reasons. Both needle valves should be screwed in to their seat, then backed out about 1 & 1/2 turns, and this is just the top 5 of the 100 bugs you might have to chase. good luck!

Steve@Advance · Apr 4, 2015

While the carb is off, open the fuel valve, see what flows. Should get a full stream. If it trickles or
drips or nothing at all, the problem is in the valve, filter screen, or line.

Was there fuel in the carb bowl? Turn it over, see how much runs out, should be 1/4 cup or so.

If the first test was good, and there was little or no fuel in the carb, there is a problem with the
needle/seat, float level, improper assembly.

If there was a good amount of fuel in the carb, there is a problem with the main jet. It's clogged, the adjustment screw is too far in, the tip of the adjustment screw is twisted off in the main jet, water in the fuel, wrong fuel (diesel).

TO-30 Carburator Problem

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