Jump to content

Help if possible. Erratic idle/misfire.


drysd4le
 Share

Recommended Posts

Hi guys,

 

I have recently had an absolute nightmare with my Z, it has developed an erratic idle/misfire that comes and goes, but seems to clear if you give the car a good blast. I have changed plugs so far, which made a small difference, but it still seems to come back, I'm thinking coil packs next, but I am a bit concerned that when I changed the plugs, there was oil in two of the plug wells, cam gasket, or even worse head gasket? Any help or advice would really be appreciated, it's starting to get really annoying.

Link to comment
Share on other sites

Cam cover gaskets are quite common to fail.

 

Erratic idle will be a process of elimination if the car isn't throwing an EML but a good diagnostic as Graham said will help.

 

Ideally when it's idling erratically you want to pull each coil pack in turn.....if he engine idles worse then it's a good coil. If there is no change then you may have found your dodgy coil.

Link to comment
Share on other sites

Re the oil in your spark plug wells, check out this recent thread.

 

I've just found the same thing in cyl 6 and having done some reading it's a common problem with DE engines. I've decided to go for the grommet repair kit from Adrian at Torqen rather than a more expensive cam cover - £139 will repair up to all 6 spark plug chamber grommets.

 

Good luck,

Howard

Edited by thedon
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...