J persons
SHO Member
What is the recommended interval for a spark plug R&R on a GH tuned 3.5?
Spark Plug R&R
- Thread starter J persons
- Start date
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My suggestion.... my opinion, replace every 50K check/ inspect - regap as needed every 25K
Reapply dielectric grease to coil pack boot, the frequency of inspection will help you get ahead of plugs burning unevenly possibly needing replacement - early indicators to failure and carbon issues.
Last thought getting the coil pack boots off give you a chance to replace them as well before they seal themselves to the plugs. Nothing worse then breaking the expensive coil packs like I did after 27K - I tried to finagle apply pressure snd cracked the coil packs - 2 of them - the plastic disc's.
Reapply dielectric grease to coil pack boot, the frequency of inspection will help you get ahead of plugs burning unevenly possibly needing replacement - early indicators to failure and carbon issues.
Last thought getting the coil pack boots off give you a chance to replace them as well before they seal themselves to the plugs. Nothing worse then breaking the expensive coil packs like I did after 27K - I tried to finagle apply pressure snd cracked the coil packs - 2 of them - the plastic disc's.
Last edited:
J persons
SHO Member
Thanks! I just bought a set from Summit Racing, because I wanted to get my sale over the free shipping threshold. I got the car tuned last September and put about 10K miles on it. The only thing that I've noticed is a slight drop in mileage in the last 6 months.
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