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post #1 of 16 Old 01-18-2011 Thread Starter
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ignition

Ok, so i wasnt getting spark. new cap and rotor--then i was getting spark to the points but couldnt get it to arc from the plugs. new ignition coil solved that (the old one must have been weak-so if you ever have fire at the points but its week it very well may be the coil).

now im getting plenty of spark, but i believe the points are intermittently grounding out. any tips?

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post #2 of 16 Old 01-18-2011
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So, do you mean you are getting a good spark at the plugs but it is intermittent?
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post #3 of 16 Old 01-18-2011 Thread Starter
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some time she turns right over, sometime i turn the key and get total bupkus, just nothing.

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post #4 of 16 Old 01-18-2011
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Terminology

"Turns right over" meaning it fires ups and runs or the engine just spins over but doesn't start?

"Total bupkus" engine doesn't spin over or it spins over but doesn't fire up(start)?

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some time she turns right over, sometime i turn the key and get total bupkus, just nothing.
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post #5 of 16 Old 01-18-2011 Thread Starter
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turns right over means plugs arc, bubkus means absolutly nothing happens

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post #6 of 16 Old 01-18-2011
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Is there an external or is it internal (built into the coil) resistor and did you replace it w/ the same type?

Is the cap and rotor the same brand? (some brands don't work together w/ the air gap)

Did you change the "condenser" w/ the points?

Are the point wire/s clear of grounding out?

Are the batteries fully charged?

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post #7 of 16 Old 01-18-2011 Thread Starter
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i think the point wires may not be clear, the replacement set didnt have that extra nut as the original, so i had to fiddle with the original and think that may be the problem, but am having trouble getting them right.

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post #8 of 16 Old 01-18-2011
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You need to follow the power with a meter when its NOT working as it could be anyplace starting with the start switch NOT supplying power

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post #9 of 16 Old 01-19-2011 Thread Starter
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after messing with the points the grounding problem has stopped.....

but....

ive got plenty of fire in the cap, but i have no idea why between the cap and the plugs there remains a problem, as i cant get the plugs to spark?!? now the moyer marine manual suggests w/no plugs attached getting the coil wire to spark, i dont understand why this would be any diff. than the plugs. i have new wires and plugs, and again plenty of fire at the point... im confused

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post #10 of 16 Old 01-19-2011
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1st, the plugs need to be grounded via the hex or threads and then you should see a tiny "blue" spark at the electrode. Personally, I like to hold it and jump j/k

2nd, the points will show a spark as they complete the circuit (goes to ground) and energizes (fires) the coil (primary coils) so it sparks (secondary coils), but that spark (points) isn't the spark you see at the plugs.

If the coil wire is sparking when it's close to a ground (needs an air gap/space) and is in fact firing when it's turning over, then the cap/rotor distance is usually too far apart. Matching a cap/rotor brand is very important.

A bad condenser can also cause this problem if it's a weak spark.

On top of all that, did you turn the distributor? (I hope not) That would also cause it not to fire properly. If that's the case, line up the timing mark on the front pulley/dampener w/ #1 (usually) on firing position and see if the rotor is pointing at that plug wire position. (just needs to be close)

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Last edited by MacGyverRI; 01-19-2011 at 10:33 AM. Reason: more info
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