![]() It worked fine, the upgrade was purely vanity. I can easily put the old coil back in and test. By the time it gets home, it starts right up so I'm not sure those suggested diagnostics would be valid two hours later. Diagnostics at that point are not an option. I don't know that it takes exactly two hours for the problem to clear up just happens that's been the break in between dying and getting towed home, or leaving it pushed into a parking space and returning.Īs to all the suggestions for diagnostics at the time of failure, always happens away from home, in the middle of doing something else. There is no spacer between carb and manifold other than the EGR plate (but isn't the vapor lock occurring in the fuel line?) The return-to-tank pump is new to me was this in use for '73s? I know there is a vapor capture canister, but that's about it. Both short sections of rubber hose are new, ethanol-resistant hoses. ![]() Replaced the coil (not the Flamethrower) at the same time, the yellow top clone. Yes, I converted to electronic points, the Pertronix 1. Wow - what a great bunch of answers and possibilities. Thoughts/advise/witty remarks? Thanks in advance. Tony: I'm going to retrace the fuel line as I hadn't considered coolant hoses, but under the hood, well, the fuel comes to the fuel pump from the wheelhousing near no hoses maybe the problem occurs from the pump to the carb? And I still have never dared to "fill 'er up". ![]() I have a lot, lot, lot of trouble filling the car due to (I think) California pump emission controls I have to force the seal of the nozzle to the gas outlet, and hold it wedged in place at a perhaps 1/4 the usual flow. After the last engine off stop, maybe out of the car 5 minutes, about 1 mile down the road it dies.Īs to fuel level, I'm always between 1/4 and 3/4 full. ![]() Example: run around, make a few stops, maybe drive 10-15 miles total. It seems to occur at full engine operating temperature and maybe it's coincidence, on nice days (high 70s/low 80s). It has happened four times total 3 times left me stranded (one time it did restart while underway). A dirty sock isn't going to just get clean, a hole in the diaphragm would be a constant issue, etc. Besides "dies like it is out of gas, but let it set two hours and it's like nothing ever happened", how else to I determine what's the issue? Many of the things you mentioned seem as if they would endure after a engine quit. I don't think I've ever had it until now, if vapor lock is the problem. Thoughts/advise/witty remarks? Thanks in advance.Ĭlick to expand.And I never had vapor lock in my '71 and yet I put 43,000 miles on that car in one year. I can't see any other point where the fuel line comes at all close to the exhaust. It sort of looks like the fuel line may be too close to the exhaust shortly after it exits the tank in the photo below, but that's about a two inch distance from pipe to pipe where my finger is, and it's a rubber hose (which should? provide some insulation itself?) Past that point the solid fuel line goes up and over the rear wheel assembly then forward to the engine. I had a new tank installed, and I've had a new full exhaust system installed. Another solution is to insulate the fuel line at the point it's picking up the extra heat. One solution is to get an electric fuel pump mounted at the tank so that the fuel line is always under pressure, instead of the fuel being sucked from a long line starting at the tank by the engine-mounted fuel pump. and it's usually (always?) because of the fuel line overheating. Then, voila! As if nothing ever happened.Īs I understand, some say it's just air, some say it's gasoline vapors, but either way a bubble of vapor gets in the fuel line and prevents any gasoline getting to the engine. A no-start situation for roughly the next two hours. One time only while in motion I was able to slip into neutral and restart, but only that once. I'm fairly sure I'm getting vapor lock: just running along normally, sometimes while moving sometimes stopped at a light, it's as if suddenly there is NO gas and the engine dies.
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