A place for more technical discussions. Please make sure you post in the correct section on the site, this way it keeps the site tidy AND ensures you get a more relevant answer.

Spark plug hole rethreading

  • Damo666
  • Topic Author
  • New Member
  • New Member
    Public
More
12 Jan 2017 18:53 #176676 by Damo666
Spark plug hole rethreading was created by Damo666
A little while back I asked about fixing a rear engine mount and this possibly causing lumpy tickover on my other half's 2003 Jimny. Well the mount is sorted and the problem was still there. In the absence of a code reader I thought it felt like it was misfiring so I went old school and started checking the plugs....

Yep, here was the problem, pulled out the second lead/coil pack in from the front and the lead had all but disintegrated or something and was just touching the spark plug with a thin bit of wire.......easy fix, new coil pack. The BIG problem I have is the spark plug had become that loose that it has now stripped the threads in the head and in the process lost its 4 electrodes off the end of the spark plug (out the exhaust hopefully!)

Has anyone had any experience of this or of using Helicoils to repair it and if so what size am I going to need? HELP!

Thanks

Damo

Please Log in or Create an account to join the conversation.

  • OllieNZ
  • New Member
  • New Member
    Public
More
12 Jan 2017 19:47 #176685 by OllieNZ
Replied by OllieNZ on topic Spark plug hole rethreading
Unless you're pretty skilled I'd not recommend doing it in situ. There's not much meat between the plug holes and the valves......

[IMG

Please Log in or Create an account to join the conversation.

  • mickt
  • New Member
  • New Member
    Public
More
12 Jan 2017 20:17 #176696 by mickt
Replied by mickt on topic Spark plug hole rethreading
Ouch! It would be easier and quicker to get a replacement head. James (j99PRE) might be able to help.

Please Log in or Create an account to join the conversation.

More
12 Jan 2017 20:36 #176700 by mlines
There are a number of repair services around the country, here is my local one

www.threaddoctorservicesltd.co.uk

Sent from my Nexus 6P using Tapatalk

Martin

2003 M13 early KAP build.
3" Trailmaster lift with 1.5 Spacers on front
Customised winch bumper and roll cage
235/85R16 Maxxis Bighorns on 16" Rims, 4:1 Rocklobster, Rear ARB locker and on-board air
Corrected arms all-round, rear disks, Recaro seats and harnesses

Please Log in or Create an account to join the conversation.

  • Damo666
  • Topic Author
  • New Member
  • New Member
    Public
More
12 Jan 2017 20:53 #176710 by Damo666
Replied by Damo666 on topic Re:Spark plug hole rethreading
Any idea on what sort of price I'd be looking at to get it done? Wonder whether it is worth just sourcing a new head?

Please Log in or Create an account to join the conversation.

More
12 Jan 2017 23:18 - 12 Jan 2017 23:19 #176726 by jackonlyjack
i have a M13A head still on the engine just let me know if you want it
and i will remove it to check condition £25 plus postage ;)

Jack
Last edit: 12 Jan 2017 23:19 by jackonlyjack.

Please Log in or Create an account to join the conversation.

Time to create page: 0.171 seconds
Joomla template by a4joomla
We use cookies to give you the best online experience. Please let us know if you agree to all of these cookies. Accepting the Cookies also accepts the Disclaimers for the website.