Moss Motors, Ltd

I teach at Caldwell High School, and right now our school's Auto Shop teacher, and our advanced Auto Shop class, as well as myself are a little stumped.

 This past summer we pulled the engine and detailed the everything under the bonnet, new paint, etc., including the engine. After installing, and trying to start we had fuel leak from the tupe connected to the jet on the front carb. Closer inspection revealed that I had cut the tube when cleaning the carbs. I ordered two new jet assmeblies from MOSS, and installed them. We started the car set the timing, adjusted the carbs, and it ran great! I drove the car for several days, occasionally it would have trouble starting, then it wouldn't start at all. I replaced the floats, and the "pin" valves with new floats and the new "ball-bearing" style valves. We are getting fuel into the chambers but it is still not starting.

We have disassembled and reassembled the carbs several times, adjusted the choke and choke assembly, compression is good on all four, spark is good, plugs are not wet, timing seems to be correct, checked valves and adjusted are at spec and working. I have pulled the jets, fuel is come out when they are lowered below the fuel chambers, however when attempting to start there is not a visual "Spray" of fuel in the carb, more like a seeping. What should that look like?

Anybody got anymore ideas?

Hi,

One possibility is that you have  developed an intake leak, either at the manifold , or elsewhere, check the vac line to the distributor is itself airtight,  then disconnect and plug it, this will check diaphragm in the distributer vac control unit

And hey Ive set up the timing with rotor arm pointing to no 4 on one occasion!!

Hope this helps

Cheers

steve

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To a man equipped with only a hammer, most problems look like nails

Have you reset the points?

I know you say you have good spark but you may be set to the short side, try opening them to the fat side this will give more coil charge time.

If that does not work you can try "fogging" the intake with carb cleaner. Give a short shot of cleaner to each air cleaner, Don't use to much,if a backfire occurs all of the carb cleaner will vilontly eggnite in the air. Step back and turn the motor over. If it fires on carb cleaner you are still chasing a fuel problem.