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Problem: Engine won't start, and Carb has EXCESSIVE fuel seeping from float bowl gasket and top of carb! (Float bowl may be overflowing).
Question #1: Is the 6-1/2 pounds of fuel pump pressure too much and pushing past the float needle valves?
Question #2: Is there a way to "see" the fuel level in the float bowl under actual conditions?
Question #3: What are the two (2) inspection screws on the side of the float bowl? (See RED circled screws in attached diagram).
1. 6 1/2 LB fuel pressure is enough - in fact about just right.
2. No way to "see" the fuel level except see below.
3. Those screws are probably the way to "see" the float level. I believe the proper level is right at the bottom of the opening when the screws are removed. Be sure your floats are not leaking and filling up with fuel to prevent them from "floating".
If you have a factory repair manual, there should be a section that explains how to adjust the float level.
Good luck,
Fred
"It's delightful, it's delovely, it's DeSoto"
Hello Fred,
Thanks for your reply to my question.... Indeed I have adjusted the floats per the manual, but fuel appears to still be pushing past the float needle valves! (Fuel was literally seeping/ leaking through the gaskets!)
I the floats are sealed well, and no leaks in either one.
I believe I will bend the float arms lower, so as to put more pressure on the needle seat, and hopefully overcome the 6-1/2 lbs. of pressure. (I will also test your comment about the screw holes in the float bowl, and see if fuel comes out of them after making my float adjustments).
Thx, Brian
If it helps, I had a situation on our '66 New Yorker when the fuel pump took a dump on us where we tried starting the car and somehow ended up with fuel coming out of the front of the carb onto the intake while we cranked and cranked (at that time not knowing why it wouldn't start). After replacing the (then diagnosed) bad fuel pump, it was fine again. I'm assuming all the cranking somehow caused it to purge somewhere it normally shouldn't.
