Spark Plugs

[Dave222]

Can anyone help. What is the correct plug for the 2.5 engine and what gap should they be set at. I am getting a missfire at high revs and high boost and think it may be the plugs.
Thanks Dave

[bernhund]

I do believe they are Motorcraft AGSF32WM - 40thou gap. Though with all things Noble, I'm not 100%!

[Gadgeroonie]

make the gap smaller - the problem should go away

did the problem happen after you changed the plugs ?

[Mike Tuckwood]

We sourced some colder range Iridium plugs from America. 7 and 8 heat range, more suitable for those pushing more than normal horsepower.


Mike.

[joust]

On the wiki on here
http://www.pistonheads.com/gassing/topic.asp?h=0&a...

Nobles seem very sensitive to gap and condition.

J

[Mike Tuckwood]

joust said:

On the wiki on here
http://www.pistonheads.com/gassing/topic.asp?h=0&a...

Nobles seem very sensitive to gap and condition.

J

Most forced induction cars are similarly.


Mike.