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Old 05-28-2011, 03:57 PM   #1
jcevans
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Default weak spark

On EZ-GO gas 1984 244cc I get weak or no spark. How do I tell if it is the pulse coil, ignitor or ignition coil? I have a diagram but no ohms or so given.
I would appreciate it if I could get the resistance value of these units. or any
suggestions.
Thanks J C Evans ( Carlsbad, NM)
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Old 05-28-2011, 04:03 PM   #2
jcevans
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Default Re: weak spark

weak spark on EZ-Go gas 244cc 1984
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Old 05-28-2011, 05:16 PM   #3
BrewCityMusic
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Default Re: weak spark

here are the usual suspects and how to test them:

factory coil should read 3.4ohms or so across the poles, most aftermarket coils tend to be a bit higher, high-output aftermarket coils can be as low as 2 ohms. And, also check the pulsar (that's done with the 2 wires coming out of the engine - red and blue) after unplugging it, you should get between 75 and 150 ohms on those wires, also if you want to be triple sure go ahead and switch your meter to the lowest AC setting on those wires and turn the engine over, you should see between .75 and about 1.2VAC generated by the pulsar.

If this all checks good, you're likely looking at a bad ground somewhere (very, VERY common to these carts) - go ahead and pull and clean EVERY ground point you can find, battery strap to frame, engine, behind igniter, regulator, etc (be as thorough as possible) - that often solves weak or intermittent spark problems all on its' own.

As to the ignitor, the factory manual test procedure is "replace with known good unit", and unfortunately, there really isn't a workaround for this (especially unfortunate as a new igniter runs right around a c-note, give or take) ... If everything else tests good and still no fire, you may want to do the HEI conversion (costs around $40 and takes about an hour, basically eliminates the ignitor and subs a mid-70's Chevy HEI ignition module) - the good news on the HEI mod is that it will give you a MUCH better spark than factory, is far less prone to failure than the EZGO ignitors, and will actually give you a noticeable improvement in starting and performance. If you REALLY want to go all out, when you do the HEI, pick up a nice high-perf aftermarket coil for around $20 and you'll likely never worry about spark again!

I'll keep an eye on the thread, if you need the HEI instructions and diagram let me know and I'll post it (although if you search my threads from last summer I did a few very detailed ones on the conversion)
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Old 05-28-2011, 08:41 PM   #4
jcevans
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Default Re: weak spark

I appreciate this information very much. I use my cart to get around in. I'm 89 and
slowing down some. I would like the conversion information I to am fihting for survival.
Thanks again J C
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Old 05-29-2011, 02:12 AM   #5
BrewCityMusic
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Default Re: weak spark

here's the schematic, the HEI module is available through any auto parts store, tell them you need a module for a 1976 Chevy Truck with a 350ci engine

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Old 05-29-2011, 04:09 PM   #6
jcevans
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Default Re: weak spark

Quote:
Originally Posted by BrewCityMusic View Post
here's the schematic, the HEI module is available through any auto parts store, tell them you need a module for a 1976 Chevy Truck with a 350ci engine

Boy you don't know how I appreciate gettig this information and THANKS!: I'm not very good at the computer but hope you get this. I will make a $20 donation to this place in appreciation for your help. thanks again jcevans
jc-8-evans@plateautel.net
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Old 05-29-2011, 04:38 PM   #7
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Default Re: weak spark

if you need tips, etc while doing the swap, feel free to ask, there are a lot of us here that are always willing to help !!!!
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Old 05-30-2011, 09:50 AM   #8
shadowman
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Default Re: weak spark

Quote:
Originally Posted by BrewCityMusic View Post
if you need tips, etc while doing the swap, feel free to ask, there are a lot of us here that are always willing to help !!!!
thats what its all about.....................................
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