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TO-30 Frustration Continues

F

Fergienewbee

Well-known Member
I have had the carburetor apart three times. I can blow air through it and everything seems to be working as it should. It will start for a second or two and then quit. Fuel is getting to the carburetor but it seems like it is not being sucked into the manifold. It ran before I had the head rebuilt with a broken manifold. Now I have a new one and it won't start. Any ideas where to go next?

Larry
 
Is the manifold gasket seating properly? A warped manifold base might leave a gap that will suck air reducing the vacuum to the carburettor .
 
how long since it ran? pull the sparkplugs and give each cylinder a squirt of oil for a suction seal.spin over then reinstall plugs.next check your manifold for seal with water or pull it off and chack it for flatness-t square edge works great.u may have to have it mjlled flat or use 2 gaskets.last-check the carb to manifold gasket-use a good sealer.
 
The manifold is brand new and I had the head ground when the did the valves. The did the exhaust side too. I'll ghave my BIL help me run some testes.


Larry
 
Take the air cleaner hose off the carb and hold your hand over the end while cranking it over and it should suck your hand in. If it don't try some oil in the plug hole like jon said, and if that don't help put your old one back on and if it starts you need to have the new one replaced.

Bob
 
Maybe it"s not the carb unless you are absolutely sure there is no fuel getting to the cylinders. I"d be looking at the primary ignition circuit and the timing. As Steve points out, is the valve lash correctly set?
 
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