Ignition problem w114 - Page 3 - Mercedes-Benz Forum

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post #21 of 25 (permalink) Old 04-12-2014, 08:50 AM
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Kurt, first off I am sorry that you are getting such terrible service from Hotspark. I will stop recommending them if they don't step up and make an attempt to satisfy your problem. Also i just remembered that there are two different sizes of the Non-wired sensor that slips over the hexagon shape on the distributor shaft. There shoulud be no play in that if it is the correct size. It should fit nice and tight. When you get a chance, check yours and let me know what you find.
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post #22 of 25 (permalink) Old 04-12-2014, 09:21 AM
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There appear to be at least three ways to get your car running (that I'm aware of). Pick your path, and perhaps proceed from there:

1) original configuration w switchgear
2) aftermarket electronic or optical ignition. (HotSpark is one of these options.)
3) run it "old points" style, connect green wire from points to negative on the coil, and 12 V (from ignition switch) to the positive on the coil.

I switched my car from #3 to #1 because #3 will fry the points pretty quickly.

Chose your path forward and proceed. Provide videos, pictures, diagrams, and be very descriptive and you will get lots of help. People just want to help.

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post #23 of 25 (permalink) Old 04-19-2014, 11:28 PM Thread Starter
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I have received a response from Hotspark after sending another email asking to return the unit under warranty. I was told to send it back in "as new condition". Hopefully that means as new but installed and lightly machined for clearance condition.

Fonzi, if going "old points style" I am assuming the corresponding coil/resistor will allow the points to last a bit. Since I'm currently over a hundred bucks into option #2 I should see if I can get it to work. Thanks to everyone for the help.
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post #24 of 25 (permalink) Old 04-20-2014, 04:53 AM
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I would definitely put everything back the way it was before you changed anything, get an in-line spark tester and check for spark at the plugs, if there is none, move the Spark tester to the coil, determine exactly whats going on.

If the car starts but then dies, there is probably spark happening, it might be another issue, or an intermittent issue, but you have to be kind of scientific about it, if you start changing things without really knowing whats wrong you are basically screwing yourself up further.

If the ignition module is bad you can basically bypass it like someone said earlier.
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post #25 of 25 (permalink) Old 05-05-2014, 04:35 PM Thread Starter
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First, thanks to everyone for the input and help. The Hotspark option is no longer an option. Not so much due to the product, but due to the seller. I'm
going the pre-transisterized route. I think I'm stuck with the Hotspark coil, will it work? it's resistance is 1.7 Ohms. I've already ordered the correct condenser, fresh points and a 0.9 Ohm ballast resistor.

Luna, I just re-read your post. The magnet sleeve was loose and as per the Hotspark instructions I wrapped a little electrical tape around the dizzy shaft to get it to seat. I also had to machine a little off the base of the module for it to fit. Lastly the coil was not a direct fit. Despite what the website stated, the Bosch coil was larger in diameter than the Hotspark coil.
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