295 intermittent spark
 

When I engage the starter I get one spark across the plugs, then nothing. Pulsar measures good according to the manual. Coil new and the Igniter.

Any ideas appreciated.

Thanks,
Ken

Re: 295 intermittent spark
 

Sounds like a bad ignitor. Did you buy a cheap one ?

Re: 295 intermittent spark
 

Be sure to remove and clean ALL of your ground attatching points, wires and ground stud over by the solenoid as well, Ezgo has a tendency to corrode there and cause a spark loss.
But, like trig says, Interweb cart electronics are junk, check your grounds and reinstall your OEM parts, but if you have to buy anything, unfortunately, OEM is the way to a long running cart.

Re: 295 intermittent spark
 

Also if you have disconnected the battery recently, Check you have it connected the right way (negative to ground ) easy mistake to make and can cause your symptoms.

Re: 295 intermittent spark
 

Thanks guys.

Note...I never use junk parts from China. Always OEM.

Re: 295 intermittent spark
 

What I have found when someone installs the battery incorrect it will spark one time just as you let off the pedal. I think his is sparking the one time when you first hit the pedal ? which normally is a bad ignitor.

Re: 295 intermittent spark
 

I also will mention to Kenlhlp that some dealers are now selling aftermarket ignitors.
The marking on an OEM ignitor is Kokusan Denki Made in Japan.
Check plastic connection where pulser coil plugs in good and also like crash12888 said the grounds. Wiggle the pulser connection while checking for fire.
I assume we are talking about the Pre-Mci engine also ? because the dealer I buy from no longer has the ignitor . Same with ezgo in Augusta

Re: 295 intermittent spark
 

Good catch Trig, I should have noticed that.

Re: 295 intermittent spark
 

Great info guys. I am in process of checking all the connections.

Re: 295 intermittent spark
 

Still having problems. Found the two pin pulsar plug was bad and eliminated it. I have replaced all the grounds and cleaned all connections. Rebuilt the original carburetor.

I have good spark now. It tries to start. Fires sporadically with the throttle at minimum. Eventually the engine starts. When running it has power, idles and accelerates fine. If I come to complete stop, then try going again the engine is back to sporadic firing, no go.

Just at a loss what could be wrong.

Re: 295 intermittent spark
 

When you rebuilt the carb, were you able to get the jets and tube out of the carb? If only the jet, or if you only sprayed it with cleaner, significant cleaning of the carb may still be necessary.

Re: 295 intermittent spark
 

At least you got it to firing now so we can try and find your other issue. These engines don't idle by the way. Tell us what your compression is ?

Re: 295 intermittent spark
 

JponLKN, we posted at the same time and yes good call on the carb. May take more cleaning or maybe a new OEM one 8) but checking the valves and compression is a must on these engine.

Re: 295 intermittent spark
 

Further to JPonLKN and trugs comments, I definitely recommend a thorough cleaning of the carb after first checking valve lash and compression.

Re: 295 intermittent spark
 

I know it's pricey at around $30 a gallon of soaking carb cleaner, but the spray carb/brake clean will not remove internal varnish like the gallon can of cleaner, and yes, it does make a big difference to get all of the jets and flow tubes out of the carb body.
And like mentioned, check valve clearance. You are close buddy...

Re: 295 intermittent spark
 

Here is one I am fighting with right now.

The plate where ignitor is mounted was bad rusty so I removed it and cleaned it up, even put a new ground cable on it. Same thing.
With spark tested connected I discovered when I opened the throttle wide open the spark disappeared but would start back when I let off pedal but it was still sporadic.

I uploaded a video if what spark looked like before I changed the ignitor with a known OEM good one.

In all the years of working on these this is the first time I have ran into this. Usually it shows the one spark when the ignitor is bad but not this time.

Now being the OEM ignitors are no longer to be found I am wondering where we can find one that we know will work ?

Here is the two video's. First one is old ignitor and second one my OEM.

https://www.youtube.com/watch?v=Jfd5gc8wQUI

https://www.youtube.com/watch?v=x3sRly9zGBA

Also you see how rusty the plate and area around it was. Cleaning it didn't solve things though.

I have this one OEM ignitor I use for testing so I got got figure out where to buy one now. I can't sell this one as its the only one I got for testing one of these ignitors.

Ignitor is the problem on the one I am working on.

Update :

I just removed his ignitor from plate and its not an OEM. It did work for a few years because I sold him this cart in early 2018. These aftermarket ones may be all we can get from now on. I wanted to show what problems they cause in case others have this problem.
Cart is now running. I found a spare OEM in my shop.