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HELP!!! We have suddenly have NOTHING to drive!

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weewillie said:
JPSmit said:
Dizzy is probably OK - I think it is a carb issue - can you check the numbers on the needles? they might be different.
Click to expand...

But why would it run fine for years and then suddenly go off,
if the dizzy was even slightly loose it would alter the timing and then it would run like junk. wouldn't it ?
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true though I am assuming it would not run and then run rough and then run good again. Easy enough to check though - start it and see if you can turn the dizzy - gently - a fraction of an inch at a time.
 
and perhaps put a mark on the block and dizzy so you know where you started
 
I'd static time it first.

That the center two plugs are sooty and the ends not, kinda goes to cap/rotor/wires problem. #3 & #2 are opposite eachother in dizz order, mebbe exchange wires so there's the one from #4 positioned as #3 (and #3 as #4) then see if the plugs show a change.

Another thought: with the cap off, does the dizzy shaft allow any side movement: X-Y axis movement, left-right, fore-aft? Is the slot-head screw under the rotor tight?
 
Thanks ya'll...I'll try to look at all of this tomorrow or Sunday. I'm REALLY frustrated. Also, bought a new set od plug/coil wires today.
 
Keep us posted. I have been thinking about the 2 good plugs, 2 sooty plugs - if they were two front and two back it would be the Carb. But it could also be a weak spark. If you were to take the spark plug wires - one at a time - and move each one space to the right on the dizzy, you would keep the firing order but change the wires. Theoretically, if it were an electricity issue, you would then have moved it to the next two cylinders. If it stays the same, you probably don't have an electrical issue.
 
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