Rethreading a spark plug socket??? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 8 (permalink) Old 12-05-2017, 11:00 PM Thread Starter
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Rethreading a spark plug socket???

So, I bought an 86 Vulcan 750 from an auction and started tuning it up. This is my first bike, but I consider myself a little mechanically inclined. The bike did not run when I bought it, I threw a new battery in it and gave it an oil change. It now turns over but doesn't run. I decided that a new set of spark plugs might help. I got 3 out, and the 4th was being stubborn. I finally got it out but realized it was a pain because it was cross threaded. I got quite a few metal shavings along with it when I pulled it out. So now, I cant get a spark plug to screw back in, so I have a feeling that it needs to be rethreaded. However, I have no idea how to complete such a task, where to get the right tools, and how to do it correctly, ASSUMING that such a task is possible. I'm hoping someone might be able to point me in the right direction! Thanks!
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post #2 of 8 (permalink) Old 12-05-2017, 11:11 PM
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Is it one of the deep ones? If so..

https://www.ebay.com/itm/Cylinder-He...0/230957006330

1986 Kawasaki Vulcan 750
NGK Iridium Plugs #7803/DPR7EIX-9
Duralast Gold ETX15 AGM Battery
Coastered & Shaved
TOC MCCTs
Metzeler ME880 [110/90-19, 170/80-15]
Balance Dampers Replaced
Tuxedo Mod
Rebuilt Forks w/ Progressive Springs
V&H Cruzers
VN750.com Grill Cover
Meanstreak Seat
Emgo 23-92411 Handlebars
MOSFET FH012AA R/R


1990 Kawasaki Vulcan 750

1998 Honda VFR800 FI

2014 Honda VFR800F

1989 Pontiac Firebird Formula 350
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post #3 of 8 (permalink) Old 12-05-2017, 11:14 PM Thread Starter
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It's not one of the deep ones. It's the front one on the right side of the bike.
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post #4 of 8 (permalink) Old 12-05-2017, 11:31 PM
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Think this is probably what you'll need..

https://www.amazon.com/Helicoil-5334...0998319&sr=1-1

1986 Kawasaki Vulcan 750
NGK Iridium Plugs #7803/DPR7EIX-9
Duralast Gold ETX15 AGM Battery
Coastered & Shaved
TOC MCCTs
Metzeler ME880 [110/90-19, 170/80-15]
Balance Dampers Replaced
Tuxedo Mod
Rebuilt Forks w/ Progressive Springs
V&H Cruzers
VN750.com Grill Cover
Meanstreak Seat
Emgo 23-92411 Handlebars
MOSFET FH012AA R/R


1990 Kawasaki Vulcan 750

1998 Honda VFR800 FI

2014 Honda VFR800F

1989 Pontiac Firebird Formula 350
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post #5 of 8 (permalink) Old 12-05-2017, 11:41 PM Thread Starter
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I looked into a lot of kits like that, but if you read most of them, they are for 14mm spark plugs, the Vulcan uses 12mm, which is what is causing problems
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post #6 of 8 (permalink) Old 12-06-2017, 12:22 AM
1986 VN750
 
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My bad it's 12x1.25 I believe.

https://www.amazon.com/Heli-Coil-554.../dp/B000CMHVLC

1986 Kawasaki Vulcan 750
NGK Iridium Plugs #7803/DPR7EIX-9
Duralast Gold ETX15 AGM Battery
Coastered & Shaved
TOC MCCTs
Metzeler ME880 [110/90-19, 170/80-15]
Balance Dampers Replaced
Tuxedo Mod
Rebuilt Forks w/ Progressive Springs
V&H Cruzers
VN750.com Grill Cover
Meanstreak Seat
Emgo 23-92411 Handlebars
MOSFET FH012AA R/R


1990 Kawasaki Vulcan 750

1998 Honda VFR800 FI

2014 Honda VFR800F

1989 Pontiac Firebird Formula 350
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post #7 of 8 (permalink) Old 12-06-2017, 07:57 AM
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Check with Autozone...they carry several kits.

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post #8 of 8 (permalink) Old 12-06-2017, 12:02 PM
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If you do this yourself then you need to grease the threads real well to catch any metal shavings and be careful not to drop the helicoil key into the cylinder when you snap it off. If you are unsure or haven't done a helicoil in the past, then pull the head and take it to any machine shop. Don't let them charge you more than $20-$25 for the job. Cheaper than most kits, a machine shop will do it right and stand behind the work, but you have to pull the head or bring the bike to them.
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Chris Glennon - Portland, OR
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