Spark Plug Caps

blowndodge · 05-26-2011, 05:49 PM

I've been trying to track down a slight "surging" my Nomad has had for about 6 months. My TFI is adjusted so I get no ping so it's not a lean issue.

A couple of buddies have suggested it could be ignition based.

I have noticed that the left front spark plug cap is not real tight. Like most of you the screw on tip to the spark plug is not on the plug itself and is in the cap.

Just wondering if any of you have had an issue with the cap fitting somewhat loose and cause a weird low rpm stumble???

Bike runs great at all throttle openings except just off idle like in a parking lot or in 3rd gear at about 35-40 mph...

AlabamaNomadRider · 05-26-2011, 05:52 PM

Brad I am constanly pushing down on the caps as they don't seem to be as snug as they should be. Fortunately I have had no problem because of it that I know of.

Dave · 05-27-2011, 09:27 AM

It's starting to break down. Time to trade it in. I know this guy in Brea........

moloprintz · 05-27-2011, 09:56 AM

I had a similar problem.
I saw a post on here from I think Mac.
He explained about water turning to steam in the deep spark plug wells.
Upon inspection all contacts were bright except the right rear.
It was greener than my teeth!
I replaced the spark plug boot and all is well.
Thanks Mac!

Mike

blowndodge · 05-27-2011, 10:00 AM

I thought the boots don't come off? They are part of the coil???

moloprintz · 05-27-2011, 10:05 AM

Spark plug boots unscrew from the spark plug wire and can be ordered seperatley.
It think about $20.

Mike

cactusjack · 05-27-2011, 10:11 AM

Time to buy a Harley!

blowndodge · 05-27-2011, 10:25 AM

Shaddup Scott!!

Thanks Mike... I wonder if I can go with another brand?

moloprintz · 05-27-2011, 10:41 AM

21160-1091 (Right Rear).
$15.90 plus from Cheap Cycle.

Mike

05-26-2011, 05:49 PM	#1
blowndodge Sr. Contributor Join Date: Jul 2007 Location: Washington City, Utah Posts: 16,474	Spark Plug Caps I've been trying to track down a slight "surging" my Nomad has had for about 6 months. My TFI is adjusted so I get no ping so it's not a lean issue. A couple of buddies have suggested it could be ignition based. I have noticed that the left front spark plug cap is not real tight. Like most of you the screw on tip to the spark plug is not on the plug itself and is in the cap. Just wondering if any of you have had an issue with the cap fitting somewhat loose and cause a weird low rpm stumble??? Bike runs great at all throttle openings except just off idle like in a parking lot or in 3rd gear at about 35-40 mph... __________________ I love my Victory Cross Country Tour 106. Smells like Victory! Ultra's are Limited There are two types of Harley riders. Those that trailer them and those that push them. The most Interesting Man in the World "Find the things in life you don't do well and don't do those things" Member # 0005 Login or Register to Remove Ads
	0

05-26-2011, 05:52 PM	#2
AlabamaNomadRider Sr. Contributor Join Date: Jul 2009 Location: Boaz, Alabama Posts: 13,742	Spark Plug Caps Brad I am constanly pushing down on the caps as they don't seem to be as snug as they should be. Fortunately I have had no problem because of it that I know of. __________________ Gene Cross, Jr. Boaz, Alabama KawaNOW/VBA #1181
	0

05-27-2011, 09:27 AM	#3
Dave Sr. Member Join Date: Dec 2007 Location: Itchycoo Park Posts: 3,422	Spark Plug Caps It's starting to break down. Time to trade it in. I know this guy in Brea........
	0

05-27-2011, 09:56 AM	#4
moloprintz Advanced Member Join Date: May 2010 Location: Knoxville, TN Posts: 548	Spark Plug Caps I had a similar problem. I saw a post on here from I think Mac. He explained about water turning to steam in the deep spark plug wells. Upon inspection all contacts were bright except the right rear. It was greener than my teeth! I replaced the spark plug boot and all is well. Thanks Mac! Mike
	0

05-27-2011, 10:00 AM	#5
blowndodge Sr. Contributor Join Date: Jul 2007 Location: Washington City, Utah Posts: 16,474	Spark Plug Caps I thought the boots don't come off? They are part of the coil??? __________________ I love my Victory Cross Country Tour 106. Smells like Victory! Ultra's are Limited There are two types of Harley riders. Those that trailer them and those that push them. The most Interesting Man in the World "Find the things in life you don't do well and don't do those things" Member # 0005 Login or Register to Remove Ads
	0

05-27-2011, 10:05 AM	#6
moloprintz Advanced Member Join Date: May 2010 Location: Knoxville, TN Posts: 548	Spark Plug Caps Spark plug boots unscrew from the spark plug wire and can be ordered seperatley. It think about $20. Mike
	0

05-27-2011, 10:11 AM	#7
cactusjack Mega-Contributor Join Date: Sep 2007 Location: Where it doesn't snow...ever! Posts: 21,926	Spark Plug Caps Time to buy a Harley! __________________ Scott "Cactusjack" Hanks VBA #00105 H.O.G. #4250060 2011 H-D Ultra Limited 103ci :: 2011 HD Electra Glide Ultra Limited w/Stage 1 :: Rallies: Mesquite '08\|Custer '09\|Cortez '10\|Crescent City '11\|Kanab '12\|Antlers '12\|Estes Park '13\|Antlers '13\|Orofino '14\|The Dalles '17
	0

05-27-2011, 10:25 AM	#8
blowndodge Sr. Contributor Join Date: Jul 2007 Location: Washington City, Utah Posts: 16,474	Spark Plug Caps Shaddup Scott!! Thanks Mike... I wonder if I can go with another brand? __________________ I love my Victory Cross Country Tour 106. Smells like Victory! Ultra's are Limited There are two types of Harley riders. Those that trailer them and those that push them. The most Interesting Man in the World "Find the things in life you don't do well and don't do those things" Member # 0005
	0

05-27-2011, 10:41 AM	#9
moloprintz Advanced Member Join Date: May 2010 Location: Knoxville, TN Posts: 548	Spark Plug Caps 21160-1091 (Right Rear). $15.90 plus from Cheap Cycle. Mike
	0

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