08prettybird

No spark cylinder 3

9 posts in this topic

Hey smarties. Any trouble shooting ideas for no spark on cylinder 3 before I have to take it to a dealership?  Coil looks like it got very hot. No idea why. Replaced coil with a Mitsubishi coil and still no spark. Has compression. Changed spark plug. Any other things to check that I didn’t think of?

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Swap two coils and see if you get spark. 

Perhaps more likely it is your lead since you already have tried another coil. 

Damaged leads are pretty common on modern cars. Mechanics often pull them off without the right tool.

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Thanks Tolsen. Tried swapping coils and it actually ran worse. I took it previously to Pug City and they said it’s the ecm. Would the car run if the ecm has an issue?  It has good compression.  I want to exhaust all options before taking it to a dealership. I will check the leads also.  If a lead is shot would it spark or not at all?

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Engine control unit may be faulty since you say your coil is getting hot. Perhaps constantly fed power. Check it to find out. 

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I’m relaying what my hubby advised he has tried. I didn’t ask about the leads. Yet. Are aftermarket leads available or is there a cross reference to a substitute lead to test out?

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If I can find a used ecu can I use it or do I have to have it coded to my smart?  Any suggestions where to source a used ecu?

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Hey smarties. Just following up from my initial problem. Took my yellow pretty bird to Mercedes West Edmonton. After a rather large quote turns out they say it’s not the ECU and only the ignition coil. Said they have never ever had to change the ECU in any smart before.  Hope they are right!  

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If it turns out to be a faulty coil then you have failed your fault finding examination. 

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