No spark cylinders 1 and 4

[bweiss]

I have read these forums for years and have always found answers to my questions but this time I?m over my head.
1988 Black Max 150 no spark on cylinders 1 and 4.
Replaced the Trigger coil, same problem.
Swapped Ignition coils with known working ones, same problem
Swapped inside and outside switch boxes, same problem.
Checked wires from switch boxes to coils both are good. Checked ground on coils both are good.
Checked and cleaned misc ignition connections still no spark on 1 and 4.
Stator or Flywheel?

Thanks in advance for the help!

 

[j_martin]

Re: No spark cylinders 1 and 4

I have read these forums for years and have always found answers to my questions but this time I?m over my head.
1988 Black Max 150 no spark on cylinders 1 and 4.
Replaced the Trigger coil, same problem.
Swapped Ignition coils with known working ones, same problem
Swapped inside and outside switch boxes, same problem.
Checked wires from switch boxes to coils both are good. Checked ground on coils both are good.
Checked and cleaned misc ignition connections still no spark on 1 and 4.
Stator or Flywheel?

Thanks in advance for the help!

The matrix solves at both switch boxes are bad on the same set of terminals.
That's unusual, usually it would be the trigger. If the trigger ohm's out right on 2 and 4, it's the boxes.

Stator or flywheel wouldn't do that.

Sorry, that's my story, and I'm stickin' to it.

hope it helps
John

 

[bweiss]

Re: No spark cylinders 1 and 4

Well you are the second person who suggested the switch boxes so I picked up 2 of them today.
Good news I got a good deal on them bad news, still no spark 1 and 4.
I doubled checked the Trigger coil and I get 900-1k ohms (CDI replacement coil) on all 3 pairs.
Not sure there are too many other parts to replace but any advice is appreciated.

 

[j_martin]

Re: No spark cylinders 1 and 4

You must have some tight, but not connected wires somewhere, probably grounds on the coils.

hope it helps
John

 

[bweiss]

Re: No spark cylinders 1 and 4

Well I thought that too. I went through and scrapped every eyelet and nut on those 2 circuits yesterday before I did the switch boxes.
I can see with my Fluke that there is no signal coming out of the switch boxes to the coils. But unfortunately it is not capable of detecting signal from the trigger to the switch boxes.
I?m really am stumped with this thing

 

[CharlieB]

Re: No spark cylinders 1 and 4

Am I correct in assuming that when you tried other coils that they also had different plug wires?

Then I'd be finding another flywheel to test. a poor trigger magnet could be your culprit.

 

[bweiss]

Re: No spark cylinders 1 and 4

Yeah plug wires are good.
On the Flywheel idea, the magnet ring is bolted on to the hub with 8 bolts, would it be possible to rotate the ring on the hub to see if the no spark moves to different cylinders?
Again thanks for any and all suggestions.

 

[bweiss]

Re: No spark cylinders 1 and 4

Well here is another nugget of info that might spur some ideas or questions.
Noticed today that if I probe my test light to the White/Black jumper wire that goes between the 2 switch boxes that spark returns to the 1 and 4 cylinders.
I believe this wire is part of the bias timing circuit just not sure why grounding that wire would ?correct? the issue.
I assume that since spark is returning that the magnets on the flywheel are OK.

 

[bweiss]

Re: No spark cylinders 1 and 4

Well turns out the new trigger coil was bad. So much for saving money by buying the least expensive trigger on-line.
Guess that is why they call it a BOAT, Bust Out Another Thousand.
Thanks for all the ideas and suggestions

 

[achris]

Re: No spark cylinders 1 and 4

Well turns out the new trigger coil was bad. So much for saving money by buying the least expensive trigger on-line.
Guess that is why they call it a BOAT, Bust Out Another Thousand.
Thanks for all the ideas and suggestions

I know this is a 2 year old thread, but there is a really good lesson here....

Buy quality parts, THEY are the cheapest....

 

[Faztbullet]

Re: No spark cylinders 1 and 4

CDI/Rapair is the best quality aftermarket parts on the market by far, their reputation is so good that they are the official ignition part supplier for BRP. If you go to a BRP dealer and buy a pack for a 99 200h, you get a CDI pack in a BRP box at BRP prices and have a 1-2 yr warranty depending on part.

 

[j_martin]

Re: No spark cylinders 1 and 4

I know this is a 2 year old thread, but there is a really good lesson here....

Buy quality parts, THEY are the cheapest....

The other lesson is that proper diagnostics are the easiest way to limit parts expenses. A DVA meter would have made both bad triggers stand out like a sore thumb.

 

[achris]

Re: No spark cylinders 1 and 4

The other lesson is that proper diagnostics are the easiest way to limit parts expenses. A DVA meter would have made both bad triggers stand out like a sore thumb.

Also true... But I see a decided lack of DVAs around... Everybody thinks triggers and stators can be successfully diagnosed with a multimeter on the ohms ranges.... Yeah right!!! What even more frustrating (for me) is that several circuits for DVA adapters have been published on this forum, and they cost less than $5 to make... but nobody seems to see the need, they just keep asking about how to check them with resistance... What do we have to do? Beat them over the head with a DVA meter?

Chris...........

 

[CharlieB]

Re: No spark cylinders 1 and 4

Now you won't get me to admit it cause I ain't old (yet) but.................

A great many moons ago I learned from an a REALLY Old Guy that I could load test (sort of) a stator using a 12 V battery and a tail light bulb (in series), it would put enough load on the stator to clearly show it good or bad.

Triggers could also be tested using one flashlight battery and flashlight bulb, the 3 V bulb would glow dimly at 1 & 1/2 volts thru a good trigger, not at all on a bad one.

Can't tell you how long it was before I got a DVA Meter, but I've had mine since late 80's.

Any one thinking about trying this DON'T, done wrong you WILL destroy the stator/trigger if connected incorrectly. If you do not know what you are doing then invest in the DVA Meter and follow the directions in the Ignition Troubleshooting Guide.

 

[ezwitter]

Re: No spark cylinders 1 and 4

achris, this my not be the right thread but here goes anyway. how do you make a dva ? is there a thread already on this subject?

learned my lesson on this same thing about 2 months ago i was told i needed a dva to check it but tried to with muiltmeter bought parts i didn't need.

read and understand and still don't follow direction shame on me