Author Topic: I have no spark  (Read 9600 times)

450sl

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Re: I have no spark
« Reply #25 on: May 01, 2018, 19:48:12 »
To do an easy check : remove existing incoming wire from the 0.6 resistor and add +12v to it.

Do a normal start with the key, only tot stop the engine you might need to cut of the temp. added 12V, or the engine will run as long as the fuelpump supplies fuel. This might cause a lean mixture

Now you have the ignition without the electronic unit ..

G$ 993

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Re: I have no spark
« Reply #26 on: May 02, 2018, 15:22:56 »
Thank you guys!  So the points were closed during the test. I finally decided to clean them despite them looking brand new and boom Voltage at the coil. Points open and no voltage.  So I put it back together and it starts and idles nicely. It actually cold starts easier now then ever.

I should have just cleaned the dang points from the get go (like many suggested) but at least I learned a bunch about the ignition system.

Pawel66

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Re: I have no spark
« Reply #27 on: May 02, 2018, 15:35:23 »
Exactly! You learned a lot. You bonded more with your car - you will love it more!

Points, cup, rotor, condenser: have them in your trunk at all times. Some people carry the coil too. And lots of other items...

Happy you found the cause of the issue.
Pawel

280SL 1970 automatic 180G Silver
W128 220SE
W121 190SL
G-class

Mike Hughes

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Re: I have no spark
« Reply #28 on: May 03, 2018, 01:37:19 »
So glad it turned out to be something simple.  Now you have accumulated some "that happened to me once" knowledge to pass along someday!  ;^)
- Mike Hughes  -ô¿ô-
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Tyler S

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Re: I have no spark
« Reply #29 on: May 03, 2018, 13:24:21 »
The most fulfilling repairs are the ones that cost no $$. 🤑
1968 (67) 250sl. 4 speed manual. DB180 Silver
1955 220 Cabriolet A. White Grey
2019 E450 Wagon. Majestic Blue
1936 Ford PU Flathead V8. Creme on tan interior.
1989 Volkswagen T3 Westfailia Campmobile. Dove Grey (blue)

kampala

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Re: I have no spark
« Reply #30 on: May 03, 2018, 14:37:01 »
Now might be the time to think about a Hall Effect system (Hot Spark or Pertronix)   
250sl - later - manual
280sl - 1971 - Auto - LSD

rgafitanu@gmail.com

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Re: I have no spark
« Reply #31 on: May 03, 2018, 20:14:53 »
I have Hot Spark for 2 years now and did not miss a beat (knock in wood).