Cayenne Turbo Ignition / coil pack

[gasguzzlingV8]

Hey guys,

Quick question please, VW/Audi/Porsche has alot of problems with their coil packs cracking.

Giving my Cayenne Turbo a change of plugs amongst other things, and I find a crack down all of the coil packs taken out so far, as shown in the below picture.

Is this the normal place for cracking? I do have a very minor lumpy idle, but other than that, no misfire or error code.



Thanks in advance for any replys

Regards

Chris

[fubar69]

As your already there it would be worth changing them. Check the part number on them. Original ones ended with 00 or 01. I think they have superseded to end in 07 or 08 now. I doubt it will be causing a slightly lumpy idle as if a coil pack causes a misfire on cayennes they tend to melt around the plug and pop the fuse for the injectors and coils. I have seen it where they have melted part of the engine bay loom. Hope this helps

[pikey]

What does a coil pack do ?

[Pope]

I replace any coils that look like yours do in the picture - the insulation has given way and misfires seem to be more prevalent - a lumpy idle or hesitation on pick-up is usually the first sign.

In answer to the last question:

A coil pack supplies the massive electrical current to the spark plugs to create the 'spark' that ignites the intake mixture to produces the engine's power.

Earlier systems (In Porsche; up to 993) ran 1 or 2 coils into a (the) distributor(s) which directed the individual ignitions to each Spark Plug via an ignition wire (AKA: HT Leads). Coil pack ignition is much easier to produce, maintain and control. 9x6 on - no Distributor.......

[pikey]

Ah, right, got that!

[gasguzzlingV8]

Cheers guys, update: today I phoned about for a set of oem beru. Turns out that my local Porsche dealer is the cheapest for 8 of them. They also seem to be revised more times than I've had hot dinners, as the code is now 09! Just have to put it all back together now..... Thanks again