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Cayenne Surging After coil and spark Plug replacement. PLEASE HELP

jpatel15
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jpatel15 Member

jpatel15

Posted
Posted

Can someone please help me. I just replaced the ignition coils and spark plugs on my 2004 Cayenne Turbo and now it feels like the power surging between 4k-6k RPM when I go full throttle. Instead of accelerating smoothly it feels like the engine is cutting on and off, it only happens when I press the gas pedal all the way to accelerate. Could it be a faulty coil or something I did wrong when I replaced them. I gaped the new plugs at .060, it this correct? Any help would be very much appreciated.

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Loren Member

Loren

Posted
  • Admin
Posted

The spark plugs should have been pre-gaped.

If you have a code reader then the misfire would likely register and would tells you which cylinder(s) the fault is on.

Look for a loose connector or an overtightened (and cracked) coil. It is not hard to over tighten one.

jpatel15 Member

jpatel15

Posted
  • Author
Posted (edited)

connections are good and coils are not cracked, I thought the plugs may be pre gapped but my manual said to Gap at 1.6mm, is this too big? everywhere else online seems to say it should be .032" (.8mm), does anyone know the correct gap on a 2004 Cayenne turbo?

Edited by jpatel15
jpatel15 Member

jpatel15

Posted
  • Author
Posted

Good news, problem solved. Turned out that the plug gap was too big and i was getting spark blow out when the engine went under load, so I regapped them to .032" and it fixed the shuttering and engine cut problem. Runs like a champ again! Thanks Guys.

  • 1 year later...
  • 1 year later...
mbagge01 Member

mbagge01

Posted
Posted

I have been having surging issues similar to you. I have replaced all of the coils and spark plugs with OEM porsche. My vehicle though has EVOMSit ECU tune so I don't know if there is a way to tell if it is the tune causing the vehicle to surg or maybe the gap on my spark plugs is wrong. I thought that the OEM spark plugs come with the appropriate gap. Should I check my spark plugs and change the gap since I am running a tune?

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