Hi

Thought I would change the spark plugs !!!. When I removed the existing ones that have been in since I purchased the car 6 months ago they are NGK laser platinum Motorcraft AGFS 22FE13J

Went to Halfords and they identified Morgan 4/4 1997 on their computer and got me the new plugs - they ar totally different from the ones in the car. The ones in the car are much shorter. The length of the thread is 17mm from the shoulder and the plug length from the shoulder to the end of the plug is 23mm.

Checked the Ford ZTech 1997 on Halfords list and this agrees with them.


So I have two possibilities - the lists in Halfords are wrong

OR - someone has put a different plug in with a shorter thread.

I am reluctant to try the longer plug before I can confirm exactly whats going on BUT I am now a bit concerned about running on a shorter plug.

I have done abour 4000 miles since I bought the car with no probs.


The Morgan handbook gives yet another set of numbers for Champion

Could you please tell me what plugs you are running on.


Thanks

Chris

Morgan 4/4 1997 Connaught green
Sunbeam s81955
Douglas mk5 1951