I had a similar thing that turned out to be the coil- it would miss at high speeds when it was getting hot, which happened on long straight roads at fast speed.
Also had a similar one that was crap in the gas tank plugging up the intake strainer. Everytime you did something, let it rest a bit, it would run fine for a while. At lower speeds, it could get enough gas, but sustained high speed would starve it. Fuel filter clog is definitely a possibility. I always run the fuel filter after the fuel pump, because a clog in front of it will have it cavitating and vapor-locking even before the clog is enough to stop the flow. glenh :<) asad ishaque wrote: > Volks, > Thanks for the replies to my previous alternator conversion question. > Had planned for the swap this weekend but something came up. My > previously 100% reliable 68 daily driver has started to give trouble! > Last week I ran out of gas after noticing I was getting bad gas mileage. > Well, Pushed my luck and ran out just a few meters shy of the gas station. > Filled her up and she ran well. > Now this week, I am driving along a main road when I notice intermittent > power loss. First I think its my imagination or lack of sleep. But then I > enter an underground pass and the bugs really sputtering. Dies before the > exit ramp. I start it after some attempts and just about make it up and park > at the side of the road. I suspect crap in the carb so try to clean it a bit > with carb cleaner and all. Starts up after some efforts and Im off again. > Sputters a bit then dies again along another main road. Comes back to life > after a bit and then dies again. I make it to a roadside shop adn proceed to > dismantle the carb adn clean it up. I find no crap inside the float bowl > though. A good cleanup later its back in the car. Runs good. > I proceed home but then again along a main road the bug dies. Now I > suspect the spark. I pull out the dizzy and replace the condensor with a > brand new one. Good I had one in the car. Did not replace the point to save > time. Just sanded it a bit to clean up a small visible pit. Reset the timing > with a static light, this time a bit more advanced as it was retarted a bit > earlier. Start her up and she runs beautifully. The sound had changed! I was > a happy man! > But today, while on the way back from work, the performance is repeated! > Aaarghh! > Now what could be possibly wrong with the car???? > I am thinking of a chocked fuel filter. I run it in front of the engine ie > where the gearbox is. Maybe it is not delievering enough fuel at high > speeds??? Almost always the trouble was on long straight roads where one is > in speed. Need to take a look at it. > What else could be wrong???? > Bad coil (runnign a nice Bosch from Brazil)?? but would it not be > continous rather than intermittent?? > Bad slow jet??? Running an electric one in the Brazilian carb. Could this > behave this way???? > Any other ideas??? > TIA for all your thoughts. > AsadKarachi,Pakistan. > _________________________________________________________________ > Hotmail: Free, trusted and rich email service. > http://clk.atdmt.com/GBL/go/196390708/direct/01/ > _______________________________________________ > vintagvw site list > [email protected] > http://lists.sjsu.edu/mailman/listinfo/vintagvw > > > _______________________________________________ vintagvw site list [email protected] http://lists.sjsu.edu/mailman/listinfo/vintagvw
