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Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!

HELP. Ignition or Fuel? Can't keep idle. Dies when slow down

  • Carlssonlove
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1 year 2 months ago - 1 year 2 months ago #66712 by Carlssonlove
Hi guys, i am having an issue with a 2 cyl motor, that i think is fuel related, maybe too rich and valve lash not adjusted since it has 99.000 km. Spark plugs are deep black and no sign of oil, so just carbon. 
It can't keep idling after 2-3 minutes after cold start, and if running constant speed/rpm (low speed) it sputters. Initially i thought it is an coil problem, but it starts to make sens a bit more as mixture problem. Previous spark plugs were nicely coloured redish as should be. I have attached some secondary waveforms that don't look right to me.
I've attached so many pictures since me personally i can't figure out a problem certainty fuel vs spark

i've added as many captures from data logging i could

Last edit: 1 year 2 months ago by Carlssonlove.

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1 year 2 months ago - 1 year 2 months ago #66713 by Carlssonlove
adding some more pictures

Last edit: 1 year 2 months ago by Carlssonlove.

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1 year 2 months ago - 1 year 2 months ago #66714 by Carlssonlove
and more pics

Last edit: 1 year 2 months ago by Carlssonlove.

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1 year 2 months ago - 1 year 2 months ago #66715 by Carlssonlove
Last edit: 1 year 2 months ago by Carlssonlove.

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1 year 2 months ago - 1 year 2 months ago #66716 by Carlssonlove
also another set of secondary

 
Last edit: 1 year 2 months ago by Carlssonlove.

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1 year 2 months ago - 1 year 2 months ago #66717 by Carlssonlove
and the last ones together coil 1 and 2 giving a little revving

Last edit: 1 year 2 months ago by Carlssonlove.

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