How about FIRST you determine whether or not you have spark to the plug. THEN you worry about why. What makes you think you have no spark? What kind of tests are you performing?

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1989 300E 144K

I insert a metal into the cable (like a screw driver) and I try to start my car, You must feel some impulses if the spark is there. I did that with may other cars and it works. im based on that. im not a mechanic but im try to fix my car.