Normally, when enjoying vapor lock from boiling gasoline in the lines or pump there is the strong smell of gasoline (boiling gasoline pumps out the fumes). If you're not getting that, and not seeing any bubbles traveling through the inline glass filter, then I rather doubt you've got a vapor lock problem going.
You mention rebuilding the carburetor and replacing the fuel pump. Many aftermarket fuel pumps are of extremely poor quality. As well, many carburetor rebuild kits are of poor quality. I'd be suspicious of a float needle sticking in the seat (neoprene tipped ones are very prone to this). I'd also be suspicious of the fuel pump flappers sticking. I'd be inclined to pop the fuel line off immediately, crank the engine, and observe flow. Joe Currys recommendation to pop the cap is also worthwhile. >>> Adam Rodnitzky <[EMAIL PROTECTED]> 02/03/03 06:49PM >>> Hi all, My '70 Mk3 (single ZS carb) has a strange, intermittent problem that is baffling (and frustrating and stranding) me. At random intervals, the car will seemingly lose all fuel delivery to the carb. I'll be driving along, and suddenly the engine will die. If I have momentum, I keep the ignition on and the gas pedal floored while rolling along in gear and after 5-10 seconds the car will sputter a bit, then catch, sputter, then catch and spring back to life and be fine for another 10, 50, 100 or more miles. If I don't have momentum, the car grinds to a halt, and I either call the tow truck, or do the following: I spray starter fluid into the carb, which gets the engine to catch, suggesting it is not an ignition fault. Usually, after a minute or so of the spray/start/catch/die cycle, it'll start and run well for another 10/50/100 miles. I also have a clear glass fuel filter that goes on the line from the fuel pump to the carb (supplemented by a fuel filter directly out of the gas tank) and it shows the usual amount of fuel in the lines when the problem occurs. It does seem like it happens more often when there is less than 3/4 tank of gas (but that is conjecture). I rebuilt the carb a year and a half ago (along with the ignition system and a new fuel pump), replaced the fuel filters and adjusted the valves. I do know that the mixture is out of whack. /// [EMAIL PROTECTED] mailing list /// Send admin requests to [EMAIL PROTECTED] /// or try http://www.team.net/cgi-bin/majorcool /// Archives at http://www.team.net/archive /// Send list postings to [EMAIL PROTECTED] /// Edit your replies! If they include this trailer, they will NOT be sent.
