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Original Message
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| Please help me start my 390! |
| By Scott Gunter - 04/26/2005 10:02:14 AM; IP 68.217.224.126 |
Hey everyone,
I am trying to start my 390 mustang resto project, which has been sitting well over a year since running last. And it has only ran sporadically over the last 10 years. I will give you the signs and symptoms of what I am seeing, and hopefully greater minds can give a beginner some good advice.
I made sure to turn the engine over a while to help oil be somewhat circulated before it fired off. I then added gas to a very low fuel tank. As I started turning the engine over when I was ready to fire, I noticed no fuel was getting to carburetor, since there is a clear plastic fuel filter in the fuel line between the fuel pump and the carb. By pouring a small shot of fuel(w/ fire extinguisher nearby) directly into the carb, the engine fires momentarily and shuts off. So I know there is spark. It is also getting air. However, the fuel issue seems to be the principal problem. It takes A LOT of starter spinning to get the fuel to come up into the plastic filter element, and immediately after the engine stops spinning, the fuel drains down out of the element back towards the tank. Here are some knowns:
1. There is at least three to four gallons of fuel in the tank.
2. The fuel pump does move the fuel toward the carburetor.
3. The engine starts to fire, but immediately dies.
4. After much turning over, the fuel finally(slowly) makes its way towards the carb.
5. Immediately after cranking stops, the fuel in the line drains(sucks?) back to the fuel tank.
My current hypothesis is that the fuel filter on the sending unit in the tank is clogged(due to car/fuel sitting so long) and is not allowing the fuel to pump into the carburetor. As I am turning the engine over, the pump creates a suction and pulls fuel in the lines toward the carb, but at too slow a rate(and also never getting it to the carb) to get engine to fire. When the cranking stops, the vacuum in the system causes the fuel to suck back. Does this sound valid? Any more suggestions? APPRECIATE any help you guys can offer, and I thank you for it.
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