 |
|
12-26-2020, 04:30 PM
|
 |
258 I6
|
|
Join Date: Dec 18, 2016
Location: Denver, CO
Posts: 307
|
|
|
What would cause sparking on outside of Sparkplug?
Just pulled a couple spark plugs to see how they were running. They looked good. I re installed and started the engine. Everything was running fine but I noticed one of my spark plugs was arching on the outside of the plug from the boot and grounding on the outside spark plug ground? What would cause this? I think its just one plug but I am going to check tonight when it is dark to see if others are doing the same.
My ignition set up is:
MSD distributor
MSD Super Conductor wires
MSD Coil
__________________
77' J10 w/ 360, T18, Dana 20 TC
|
12-26-2020, 05:31 PM
|
 |
AMC 4 OH! 1
|
|
Join Date: Jun 03, 2002
Location: San Francisco
Posts: 3,984
|
|
|
cracked boot... or bad plug... the silicone of the boot may have a split... been there... I thought it was the plug... but again putting my hand on the wiring I was shocked... as In Zapped...
__________________
Michel
74 wag, 349Kmiles on original ticker/trany, except for the rust. Will it make it to the next get together without a rebuilt? Status: needs a new body.
85 Gwag, 226 Kmiles. $250 FSJ test lab since 02, that refuses to give up but still leaks.
See Ouray 2013, Engine bits and Fuel and brake lines, and Body work
|
01-19-2021, 11:46 AM
|
|
258 I6
|
|
Join Date: Dec 18, 2016
Location: Denver, CO
Posts: 307
|
|
|
Upon closer inspection the Exterior Spark Ceramic was cracked in two places. Must have had a damaged plug from the get go. Replaced it am good to go.
__________________
77' J10 w/ 360, T18, Dana 20 TC
|
01-19-2021, 12:21 PM
|
|
258 I6
|
|
Join Date: Nov 26, 2019
Location: Boise, ID
Posts: 366
|
|
Quote:
|
Originally Posted by posulli88
Upon closer inspection the Exterior Spark Ceramic was cracked in two places. Must have had a damaged plug from the get go. Replaced it am good to go.
|
I'd be curious where you bought the plugs. I've heard of many issues with Amazon / Ebay type stuff due to the Chinese flooding the markets with counterfeit plugs. Very common with NGK and other more recent makes and models. |
01-19-2021, 12:22 PM
|
|
258 I6
|
|
Join Date: Nov 26, 2019
Location: Boise, ID
Posts: 366
|
|
Quote:
|
Originally Posted by posulli88
Upon closer inspection the Exterior Spark Ceramic was cracked in two places. Must have had a damaged plug from the get go. Replaced it am good to go.
|
I'd be curious where you bought the plugs. I've heard of many issues with Amazon / Ebay type stuff due to the Chinese flooding the markets with cheap counterfeit knockoff plugs. Very common with NGK and other more recent makes and models. |
01-19-2021, 12:43 PM
|
|
258 I6
|
|
Join Date: Dec 18, 2016
Location: Denver, CO
Posts: 307
|
|
|
Honestly I can remember where I got them but it would have either been summit or a local parts store. They are NGK FR5's...
__________________
77' J10 w/ 360, T18, Dana 20 TC
|
01-20-2021, 04:29 AM
|
|
350 Buick
|
|
Join Date: Feb 15, 2010
Location: arizona
Posts: 1,334
|
|
|
All it takes is to drop the spark plug on the ground to make them crack, either by supplier, parts person or you. if I see them drop it I get different one and inspect all of them at the store.
|
01-20-2021, 07:13 AM
|
|
350 Buick
|
|
Join Date: Jan 04, 2005
Location: NC
Posts: 851
|
|
|
I was going to say someone doesn't like you.They used a #2 pencil to draw a line from ground to tip.. Instant short.
__________________
Owner of Jakes FSJ Junkyard  91 Jeep Cherokee /2006 3500 Dodge AKA Babe the big blue puller
Hire the handicapped, they are fun watch! 
|
01-21-2021, 02:44 PM
|
|
350 Buick
|
|
Join Date: Sep 04, 2014
Location: Kentucky
Posts: 841
|
|
|
Ive had this happen before, same issue, ceramic was cracked. Took me a bit to find it as it wasn't consistent.
__________________
2004 Jeep Liberty
1998 Jeep ZJ 5.9
1994 Jeep ZJ I6
1989 Jeep Grand Wagoneer 360
|
01-23-2021, 08:02 AM
|
|
232 I6
|
|
Join Date: Jan 22, 2019
Location: Indiana
Posts: 35
|
|
|
Have you tried a diesel swap? Easiest way to fix this I can think of.
|
01-23-2021, 09:05 AM
|
|
304 AMC
|
|
Join Date: Apr 26, 2012
Location: Lompoc and Sunland, CA
Posts: 1,552
|
|
|
Not the easiest way but the best.
__________________
Sic friatur crustulum
'84 GW with Nissan SD33T, early Chev NV4500, 300, narrowed Ford reverse 44, narrowed Ford 60, SOA/reversed shackle in fornt, lowered mount/flipped shackle in rear.
|
| Thread Tools |
Search this Thread |
|
|
|
| Display Modes |
 Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -6. The time now is 04:13 PM.
|
