Eco spark plug gap
#281
Senior Member
Mine were at 0.042-0.038. 1 or 2 were at 0.042 and the others all 0.038-0.040.
See how she runs tomorrow...as I re-gapped all to 0.033. The back side of a Milwaukee sawzall blade works good to be able to pry. Put it between the insulator and the curved ground tip, then as long as you don't twist it's all metal to metal.
Is there a tip to get the wires off the coils? I couldn't get them off so I finally just pull the whole thing out with the wires still connected. I tried sliding the red locking tab down but they still wouldn't come off, even watched the videos by CoreyMS - the plug to the solenoid/pump was easy enough to get off, just not the coils...
*Got it, need to squeeze on the grey piece that is under the red tab after you pull the red tab back.
See how she runs tomorrow...as I re-gapped all to 0.033. The back side of a Milwaukee sawzall blade works good to be able to pry. Put it between the insulator and the curved ground tip, then as long as you don't twist it's all metal to metal.
Is there a tip to get the wires off the coils? I couldn't get them off so I finally just pull the whole thing out with the wires still connected. I tried sliding the red locking tab down but they still wouldn't come off, even watched the videos by CoreyMS - the plug to the solenoid/pump was easy enough to get off, just not the coils...
*Got it, need to squeeze on the grey piece that is under the red tab after you pull the red tab back.
Last edited by gwpfan; 10-16-2012 at 01:22 AM.
#282
Senior Member
Just set all mine to .030. Any stuttering is gone, but is it possible that even with the race tune, I lost some performance? Probably in my head, but it seems to not have the same punch?? Would I do better to put all about .032 or so, maybe my issues were from the huge variance in the stock plugs?
thanks
thanks
#283
V-8 Sounds Great
Just set all mine to .030. Any stuttering is gone, but is it possible that even with the race tune, I lost some performance? Probably in my head, but it seems to not have the same punch?? Would I do better to put all about .032 or so, maybe my issues were from the huge variance in the stock plugs?
thanks
thanks
I have noticed this. After driving a few days with the NGK LTR7's, I can definitely say that my truck has less power now with NGKs than it did before with the tune and stock plugs at 0.034. Sure it seems smoother, but I want my power back. I'm reinstalling the stock plugs this weekend.
The following users liked this post:
clubsfit (10-17-2012)
#284
Keepin' the lights on!
I have noticed this. After driving a few days with the NGK LTR7's, I can definitely say that my truck has less power now with NGKs than it did before with the tune and stock plugs at 0.034. Sure it seems smoother, but I want my power back. I'm reinstalling the stock plugs this weekend.
#285
Senior Member
I have noticed this. After driving a few days with the NGK LTR7's, I can definitely say that my truck has less power now with NGKs than it did before with the tune and stock plugs at 0.034. Sure it seems smoother, but I want my power back. I'm reinstalling the stock plugs this weekend.
#286
no way some new plugs gapped to 0.030" is going to lose any noticeable power, if anything it will stop misfires (stutter) from spark blow-out
The following 3 users liked this post by Full-Race Geoff:
#287
V-8 Sounds Great
Stocks maybe, but throw in a different heat range on an already over-complicated motor and see what you get. I don't have access to a dyno but I can tell you my truck feels doggy now. Same hill that I climb every day on my way home from work I can't even hit 70mph in the same amount of time I used to. That, and my truck no longer wants to hold the TC lock in 5th or 6th.
#288
Senior Member
Hey guys, I went back to my parts dept, pulled 6 new plugs off the shelf. They ranged from .035-.041 brand new.... I have had the same miss/stutter usually around the 4000-4500 RPM mark. I run a 93 octane race tune, and it is not all the time, but seems to getting more noticeable. So, I decided to gap them all to .030, and install them, and measure the gaps on my factory plugs and see the difference.
#289
Stocks maybe, but throw in a different heat range on an already over-complicated motor and see what you get. I don't have access to a dyno but I can tell you my truck feels doggy now. Same hill that I climb every day on my way home from work I can't even hit 70mph in the same amount of time I used to. That, and my truck no longer wants to hold the TC lock in 5th or 6th.
#290
So a thousand miles later my truck is still driving like it was before. No hesitation or stutter or rough idle. Just re gapped factory plugs to .034. Originally the passenger side were all .034 and driver side were .040. No change in mileage either.