should i replace my spark plugs?
11-25-2005, 06:44 PM
#1
3rd Gear Member
Thread Starter
Join Date: Apr 2005
Location:
Posts: 777
should i replace my spark plugs?
i put in a new set of NGK coppers last april since then i have done all my modifications for a while i was runnign fairly rich but now i have it tuned right and it also has detonated a couple times because i have my timing advanced w/my predator so i pulled out a plug today and it is very dark redish brown the plug hasnt been broken or melted at all but it is very dark should i replace them all? or leave them in? if i do get a new set i plan to get iridiums
11-25-2005, 06:46 PM
#2
4th Gear Member
Join Date: Oct 2005
Location:
Posts: 1,555
RE: should i replace my spark plugs?
i read that coppers are good be need replacing often and i know from experience that NGK iridiums are good. i had them on my honda and my set for my mustang should be here on monday : )
if you had detonation on that set i would replace them. it may not look damaged but will reduce the already short lifespan of them
if you had detonation on that set i would replace them. it may not look damaged but will reduce the already short lifespan of them
11-25-2005, 06:48 PM
#3
3rd Gear Member
Thread Starter
Join Date: Apr 2005
Location:
Posts: 777
RE: should i replace my spark plugs?
alright thanks what happened was i put my cats back on for emissions and the tune was w/the cats off and i took a friend for a ride and it was detonating like crazy while i had it a WOT and how much did you pay for the iridiums?
11-25-2005, 07:02 PM
#4
3rd Gear Member
Join Date: Sep 2005
Location: Washington State
Posts: 938
RE: should i replace my spark plugs?
By last April, do you mean April 04 or 05? If 04, then yes. Performance plugs on street-driven cars should be replaced once/year or 12,000 miles, whichever comes first.
Thread
Thread Starter
Forum
Replies
Last Post
cardsrus1
4.6L (1996-2004 Modular) Mustang
19
09-15-2015 08:37 AM
