So I've run into yet-another-odd problem with my 78. It's got about 57k miles on it.
Several mornings in a row, it ran perfect all the way to work (35 miles) -- and perfect all the way home -- until I got off of the freeway, when, as soon as I slowed down, it would stall out on me. It wouldn't restart for at least 30 - 60 minutes -- and I'd usually end up draining the battery trying to start it.
Last week I took it to work anyway, and it did this on the way into work.
I don't think it's entirely related to temperature, as earlier in the summer, I rode it to and from work on hotter days, too.
Last weekend, I had it out in a nearby parkway after changing the oil, and noticed it would stall when shifting up -- that momentary letting the RPMs fall on a shift did it. I can keep it alive for a bit longer by keeping the revs way up, but...
It's very odd that once it cools down, it fires up and runs perfect. There doesn't seem to be any rhyme or reason to how hot it gets, although I suppose that on all of these times that it's stalled, I'd been revving it high, and when I rode it *very* gently (no freeway speeds, no acceleration), it seemed to be okay... that might just be a red herring, though.
Sometimes after it stalls, for the first few minutes, when cranking, it will fire on what sounds like 1 or 2 cylinders, not enough to start. Oh, and gas tank cap has been opened to test, vent isn't closed off. Works perfect on the freeway for as far as I want to take it.
I've been leaning towards coils for this, but the thing that gets me is it seems like it should start on two cylinders, even if it isn't running well.
It's very odd that it fires up just fine, just like normal when cold, and after sitting for a while, it will fire up just fine as well.
Any thoughts? I tried bypassing the ballast resistor, with no luck. Does the coils seem like the next thing to try? or pickup coils? what else could cause this?
Several mornings in a row, it ran perfect all the way to work (35 miles) -- and perfect all the way home -- until I got off of the freeway, when, as soon as I slowed down, it would stall out on me. It wouldn't restart for at least 30 - 60 minutes -- and I'd usually end up draining the battery trying to start it.
Last week I took it to work anyway, and it did this on the way into work.
I don't think it's entirely related to temperature, as earlier in the summer, I rode it to and from work on hotter days, too.
Last weekend, I had it out in a nearby parkway after changing the oil, and noticed it would stall when shifting up -- that momentary letting the RPMs fall on a shift did it. I can keep it alive for a bit longer by keeping the revs way up, but...
It's very odd that once it cools down, it fires up and runs perfect. There doesn't seem to be any rhyme or reason to how hot it gets, although I suppose that on all of these times that it's stalled, I'd been revving it high, and when I rode it *very* gently (no freeway speeds, no acceleration), it seemed to be okay... that might just be a red herring, though.
Sometimes after it stalls, for the first few minutes, when cranking, it will fire on what sounds like 1 or 2 cylinders, not enough to start. Oh, and gas tank cap has been opened to test, vent isn't closed off. Works perfect on the freeway for as far as I want to take it.
I've been leaning towards coils for this, but the thing that gets me is it seems like it should start on two cylinders, even if it isn't running well.
It's very odd that it fires up just fine, just like normal when cold, and after sitting for a while, it will fire up just fine as well.
Any thoughts? I tried bypassing the ballast resistor, with no luck. Does the coils seem like the next thing to try? or pickup coils? what else could cause this?
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