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Stalling when warm 200 1978

posted by  Chrick on  Wed Jul 31 14:08 CST 2002
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Hi,

My '78 (or so) B21F/A (fuel injected head, single SU HIF6 carb) has developed a really annoying habit. It starts like a charm with the choke on, warms up nicely, idles fine, then shortly after I start to drive, dies suddenly. I pull off, start it up again (which is usually easy) and then start driving, only to repeat the cycle forever. If I start driving while cold it doesn't seem to happen, but putting the choke on to make the mixture rich doesn't seem to solve the problem when it's warm. I suspected a faulty ballast resistor was causing my coil to overheat, but replacing that hasn't solved the problem. I have breakerless ignition, but the early type with no sensor for temperature, so it's not doing something funny with the timing when the temp gets high enough... My next step is going to be to put in a new circuit to a switch on the dash which uses the new ballast resistor and a line direct from the battery (through a new fuse) to put power to the coil regardless of whatever the old wiring is doing, but that shouldn't be necessary!

Any thoughts at all on this?

Thanks!

Chris






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