My son and I want my get my '52 Cambridge running again before he goes back to college in another month. There is a fuel delivery issue and I need ideas on what to do next.
First, a little background: In the mid-nineties I re-did a lot of the car mechanically. I sent the tank to Gas-Tank Renu and replaced all the lines (metal and rubber) as well as the fuel pump. I also had the carb rebuilt by a professional rebuilder.
The engine hasn't been run since 1998 (it seems like only yesterday....). We pulled the fuel sender and there was a half-inch layer of evil-smelling golden brown liquid that I siphoned as best I could. We got about 6-7 ounces out of the tank, but there was still a thin layer that the siphon couldn't withdraw. I'm reluctant ot disturb the drain plug because I'm concerned about the stength of the tank at that point. We poured-in a little over a gallon of fresh gasoline and started cranking the engine. The carb started leaking around the throttle plate pivot and the liquid coming out was more vile than the stuff we got out of the tank. I took off the fuel inlet to the carburetor and I got some nearly-black liquid out of the line when we cranked the engine. See the attached picture. After that, I couldn't get anything out of the fuel line when cranking.
My questions:
Could the gallon of gas be lower than (or just at the level of) the pickup point in the tank and that's why I don't get anything out of the fuel line anymore when cranking?
Should I try opening the plug on the tank to drain whatever stuff is in there, or should I siphon it again?
Could the rubber fuel lines be deteriorating internally causing the "fuel" to darken on its way to the carb?
The throttle plate pivot points did not leak with this carburetor years ago after it was rebuilt. You can see the fresh liquid under the carb in the picture.The needle valve in the carb may be stuck and causing it to dump gas so I shot some Gumout in there to free it. Is it safe to assume that once the engine starts running there won't be liquid gasoline near the pivots and the area will be under a vacuum so I won't have a leak?
Finally, the question I'm most concerned about: Could the Gas Tank Renu be breaking down and contaminating the fuel?
All thoughts appreciated. Sorry about the long-winded post.