i'm getting NGK pfr7b spark plugs tommorow ,is it worth getting thicker HT leads aswell ,like magnacore 7mm or 8mm or there race spec ones i cant remember the name.
the car is a classic my00 sti with only a panel filter at the moment,

 

no standard leads as long as in good condition work very well.. never seen an issue with them, have however seen issues with magnacore etc..

Simon

 

Simon a quick question on this if I may; cylinder nr4 keeps spitting the HT lead off the plug...I can't see any excessive wear (after comparing to the closest lead). I was thinking of replacing my leads anyway (MY00 70k)...wdyt?

Ian

 

keeps??

 

OK, a slight exaggeration...its done it twice

 

it has wreck two sets of leads or the same one came appart twice?

 

same leads, its just popped off the plug out of the recess in the block...

 

I've got the same car and replaced the leads with standard and Subaru are not particularly generous when it comes to the length of the leads. Could your lead to no.4 be slightly tight and heat/ vibration etc maybe causing it to pull off over time?
Kevin

Or a mischievous mouse, although they tend to eat my car!

 

thats what I'm suspecting tbh, I have some of Carl Davey's IM spacers fitted to which reduces the slack further.

my mischievous mouse lives under the kitchen floor and eats my cats food while they watch it

 

sounds like the problem.. if you look in the lead you can carefully squash it with pliers to make it a tighter fit.. Alternatively I think I have a set of secondhand my00 leads you could use one of the other leads from antoher cylinder that are longer?

father in-law had a mouse in his car.. it broke into a box of roses on the front seat and moved the whole lot to the boot.. father in-law saw this in the morning and then went out at lunchtime to clear up and they were gone.. stripped searched the car and they were behind the headlight!!!
the mouse chewed through lighting in the boot and a couple of other bits and put a mouse size hole in the rear seat.. he drove around with 3mouse traps in the car for a while..

Simon