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compression diminishes to nothing from 1 to 4

  • Thread starter Thread starter Paul's Zuki
  • Start date Start date
I have accomplished what I set out to do. To get the bike started. It started and stayed on, I think it still has some issues to be resolved, but b/c I'm entering this into a bike show in about 5 weeks, I will be taking the rest over to a local bike shop that knows how to work on old zuki's and it sounds freaking great.
 
Glad you got it running. Now take it out and ride that thing. Lots of throttle, but don't lug it, to seat the rings. Do some plug chops too to check the mixture.

Good luck
 
yeah, well before i got out and run it. I noticed that piston 1 & 4 which are tied to the same ignitiona coil aren't firing. Here is the weird part. last night i go and check each one and see spark on each plug. when I got it on this morning and then felt the pipes 1 & 4 were warm but not hot like 2 & 3. I checked to see if power was getting to each one and yes it is. any ideas?
 
I think I found the culprit. one of the screws that holds the ignition points was stripped and possible making the gap between the points off. took it off and to make matters worse the thread that hold the ignition point stripped as well. So, off to hardware to get heli-coil thread fixer. sigh. But, I got it on. :)
 
So check this out, need your help once again. I found that my 1 & 4 spark plugs weren't sparking. after dealing with stripped thread and such and having to heli-coil the damn things i went back to bolt everything together and setting proper spacing between the points. I turn the ignition on and check to make sure all the cables were getting power all the way up the ignition coil. So I assume there is no short. for some reason i started to spin the crankshaft while the igntion was on and noticed that my 2 & 3 point would spark as the points would seperate, but when making that motion on 1 & 4, the points would not spark at all. I've read the book, but can't seem to find the answer I'm looking for. Do any of you have an idea what it might be?
 
Paul's Zuki said:
noticed that my 2 & 3 point would spark as the points would seperate, but when making that motion on 1 & 4, the points would not spark at all. I've read the book, but can't seem to find the answer I'm looking for. Do any of you have an idea what it might be?
Click to expand...

The condensers are supposed to be there to keep the points from sparking. They can work like that but won't last. Is it possible to swap the condensers to see if the conditions swap pairs?

In the end, if you're planning to keep the bike, you're probably best off replacing the points with the applicable Dyna S ignition.
 
Not sure if I can swap those little bastards, but would condensors, cause my 1 & 4 not to spark.

Does anyone think i think i need to swap out contact breaker, igniter unit, or what?
 
You shouldn't have an igniter unit if you have points.

Are the points for 1 and 4 opening and closing?

The condensers provide an "apparent" alternate path for current, to have a preferred path for electrons instead of arcing across (and thus burning out) the points. The condensers should not actually pass current, they just look to the electrons like they might so they all rush that way instead. If the condenser fails such that it's actually passing current, then yes that would prevent 1/4 from sparking, because the current will never be pulled. It's when the points open and the current stops that the coils fire.
 
1 & 4 are opening and closing and I made sure the space was between .30 & .40 mm as the book states and did the same for 2 & 3.

Could it be as easy as replacing the condensors?
 
I'm thinking about getting a whole ignition kit with points and condensors. what do you think?
 
I know I will get the dyna s, but after this deadline I have in October. I just need to get it running good first and the the first option is a bit cheaper. anyone else think that there would be a problem anywhere else? I'm thinking not, but i'm no pro.
 
Paul's Zuki said:
I know I will get the dyna s, but after this deadline I have in October. I just need to get it running good first and the the first option is a bit cheaper. anyone else think that there would be a problem anywhere else? I'm thinking not, but i'm no pro.
Click to expand...

cheaper this minute yes, but if you buy a dyna later in in the year that'll be points set AND a dyna ignition to pay for while if ya bought a dyna NOW it'll be the only one you need to buy. it's a false economy what ya sayin'.... bite the bullet and see the difference! ;)
 
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