Plug related miss - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
Thread Tools Search this Thread
Old 09-16-2004, 05:34 PM   #1
Senior Member
Certified Car Nut
Thread Starter
 
Join Date: Mar 2003
Posts: 12,432
Thanks: 0
Thanked 0 Times in 0 Posts
J Wikoff is on a distinguished road
Default Plug related miss

This morning, I encountered just a little momentary missing like when I had Autolite plugs that were three ranges colder than stock. They were fouled bad, so I put in NGK'* that are two ranges colder than stock. It all seemed fine. Well, appearently they are fouling now. I've had them for less than a year. They are TR6 V-power NGK'*. Any guidence on new plugs?
J Wikoff is offline   Reply With Quote
Old 09-16-2004, 06:19 PM   #2
Senior Member
True Car Nut
 
Join Date: Jul 2003
Location: Westerville, Ohio 2000 Black SSEi
Posts: 6,127
Thanks: 0
Thanked 0 Times in 0 Posts
Rogue is on a distinguished road
Default

Are they fouled or worn down?
Rogue is offline   Reply With Quote
Old 09-16-2004, 09:02 PM   #3
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

I'm back to the TR55'*.....I really think I'm kinda in between the two heatranges. Not sure yet. My TR6'* looked pretty good except for the one that was missing.
willwren is offline   Reply With Quote
Old 10-07-2004, 06:29 PM   #4
Senior Member
Certified Car Nut
Thread Starter
 
Join Date: Mar 2003
Posts: 12,432
Thanks: 0
Thanked 0 Times in 0 Posts
J Wikoff is on a distinguished road
Default

What are yours gapped at?
J Wikoff is offline   Reply With Quote
Old 10-22-2004, 07:04 PM   #5
Senior Member
Certified Car Nut
Thread Starter
 
Join Date: Mar 2003
Posts: 12,432
Thanks: 0
Thanked 0 Times in 0 Posts
J Wikoff is on a distinguished road
Default

I put in 55'*. My TR6'* all looked pretty good, but one had carbon tracks, so I figured that was the problem. But the miss is still there, but lessened. I've tested my MSD wires recently, and the wire to that plug seemed fine. A few of the others were difficult to get a good reading off. Maybe new ones should be on order. They are 1.5 years old.
J Wikoff is offline   Reply With Quote
Old 10-24-2004, 06:36 PM   #6
Senior Member
Certified Car Nut
Thread Starter
 
Join Date: Mar 2003
Posts: 12,432
Thanks: 0
Thanked 0 Times in 0 Posts
J Wikoff is on a distinguished road
Default

MMkay, replaced my MSD'* with a set of stockers that I tested as good. Except the shortest one, so I left the MSD wire on that cylinder after I tested it. The miss still exists. Would the extreme difference on resistance of the two wires on one coil cause a problem, like much more energy going to one cylinder and not evenly? I understand that, but don't know if it would be a problem. The miss usually disappears after the engine is warm. I tested the coils recently, maybe I shoud test them again.
J Wikoff is offline   Reply With Quote
Old 10-24-2004, 07:19 PM   #7
Senior Member
True Car Nut
 
Join Date: Jul 2003
Location: Westerville, Ohio 2000 Black SSEi
Posts: 6,127
Thanks: 0
Thanked 0 Times in 0 Posts
Rogue is on a distinguished road
Default

Quote:
Originally Posted by jwikoff99
MMkay, replaced my MSD'* with a set of stockers that I tested as good. Except the shortest one, so I left the MSD wire on that cylinder after I tested it. The miss still exists. Would the extreme difference on resistance of the two wires on one coil cause a problem, like much more energy going to one cylinder and not evenly? I understand that, but don't know if it would be a problem. The miss usually disappears after the engine is warm. I tested the coils recently, maybe I shoud test them again.
Could be the ICM as well.
Rogue is offline   Reply With Quote
Old 10-24-2004, 07:51 PM   #8
Senior Member
True Car Nut
 
Join Date: Apr 2004
Location: Three Oaks, Michigan
Posts: 4,879
Thanks: 0
Thanked 0 Times in 0 Posts
opensourceguy is on a distinguished road
Default

Also clean up the surface area of where the ICM meats the bracket. The ICM grounds on the bracket, and without good contact, it won't work, or won't work well. May also want to put some die-electric grease on the main connector to the ICM, can't hurt, especially with winter comming.


-justin
opensourceguy is offline   Reply With Quote
Old 01-19-2005, 10:45 PM   #9
Senior Member
Certified Car Nut
Thread Starter
 
Join Date: Mar 2003
Posts: 12,432
Thanks: 0
Thanked 0 Times in 0 Posts
J Wikoff is on a distinguished road
Default

*cough* Sorry for the dust...

So, after trying bulb grease on the connector prongs for the coils and in the spark plug boots, the miss remained. I swapped the coils from my wife'* old 93, and the miss ALMOST went away. I was left with just this kinda surgy miss, ususally came in triplets. I added some tranny fluid cause it read almost .5 L low. It'* almost nearly gone, just a wee little bit left.

What else can I try?
J Wikoff is offline   Reply With Quote
Old 01-20-2005, 12:24 AM   #10
Senior Member
True Car Nut
 
Join Date: Jul 2003
Location: Westerville, Ohio 2000 Black SSEi
Posts: 6,127
Thanks: 0
Thanked 0 Times in 0 Posts
Rogue is on a distinguished road
Default

ICM?
Rogue is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Will a spark plug miss cause this... kristie_jeff 2000-2005 3 09-23-2007 03:20 PM
Plug wires fail - cause miss bill buttermore General GM Chat 17 05-09-2007 05:44 PM
What's this plug in my trunk? CD changer plug I hope?!?!?!? 02-SLE 2000-2005 3 09-07-2005 10:16 AM
Need Plug Wire Part Number and NGK Plug Part Number!! josho66 2000-2005 11 05-29-2005 01:06 PM
Not Bonneville Related but Still Important Mario Rosso Lounge 12 02-24-2004 11:26 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 01:18 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.