Very hgih idle speed

recumbentbob · 05-10-2011, 12:35 PM

So I leave for lunch, start the 08 nomad and it pops thru the throttle body and now has a very high idle. feels like about 3000 RPM.

I rode it and it still does it. So I checked the Cobra Fuel processor lights say it's OK.

I turned the pots to 0 and it still does it. High idle and some popping in the exhaust.

Will the bike still run if I disconnect the cobra ground wire to turn it off completely?

Any idea what I should check when I get home??

Bob

blowndodge · 05-10-2011, 12:49 PM

depending on how hard the backfire (pop) was you could have bent something in the injection system not allowing the butterflies to close..

recumbentbob · 05-10-2011, 01:51 PM

I don't think it was hard enough to bend anything.
Hopefully just a piece of carbon or dirt stuck in there.

**MAS Tequila** · 05-10-2011, 03:23 PM

Yes it will run with the ground (I would disconnect the positive) wire unhooked.

MT

recumbentbob · 05-10-2011, 05:42 PM

Well I found what it was.

I have Chuckster's dual intake plate kit. When riding home it was surging so I thought it had to be a vacuum line and I was right.

The two lines that go thru the plate get capped of with rubber caps and the pop thru the intake blew one of them off. It was laying in the bottom on the air filter. I can't believe it didn't get sucked into the engine. I got lucky for once.....

I'm getting two new ones at Autozone and will glue them on with Loctite silicone adhesive.

**ringadingh** · 05-10-2011, 06:25 PM

The cap was probably trying to get sucked into the motor, you got lucky. Although I doubt one of them caps would really do any damage even if it did get sucked through the motor.

chucks1911 · 05-10-2011, 06:55 PM

I had the exact same thing happen to me after I installed that same kit. I fixed it by replacing the supplied caps with some better and tighter ones.

Quote:

Originally Posted by recumbentbob

Well I found what it was.

I have Chuckster's dual intake plate kit. When riding home it was surging so I thought it had to be a vacuum line and I was right.

The two lines that go thru the plate get capped of with rubber caps and the pop thru the intake blew one of them off. It was laying in the bottom on the air filter. I can't believe it didn't get sucked into the engine. I got lucky for once.....

I'm getting two new ones at Autozone and will glue them on with Loctite silicone adhesive.

05-10-2011, 12:35 PM	#1
recumbentbob Sr. Member Join Date: Mar 2009 Location: Newburgh IN Posts: 3,404	Very hgih idle speed So I leave for lunch, start the 08 nomad and it pops thru the throttle body and now has a very high idle. feels like about 3000 RPM. I rode it and it still does it. So I checked the Cobra Fuel processor lights say it's OK. I turned the pots to 0 and it still does it. High idle and some popping in the exhaust. Will the bike still run if I disconnect the cobra ground wire to turn it off completely? Any idea what I should check when I get home?? Bob __________________ VBA #01084 "A well regulated militia being necessary to the security of a free State, the right of the People to keep and bear arms shall not be infringed." Login or Register to Remove Ads
	0

05-10-2011, 12:49 PM	#2
blowndodge Sr. Contributor Join Date: Jul 2007 Location: Washington City, Utah Posts: 16,474	Very hgih idle speed depending on how hard the backfire (pop) was you could have bent something in the injection system not allowing the butterflies to close.. __________________ 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

05-10-2011, 01:51 PM	#3
recumbentbob Sr. Member Join Date: Mar 2009 Location: Newburgh IN Posts: 3,404	Very hgih idle speed I don't think it was hard enough to bend anything. Hopefully just a piece of carbon or dirt stuck in there. __________________ VBA #01084 "A well regulated militia being necessary to the security of a free State, the right of the People to keep and bear arms shall not be infringed."
	0

05-10-2011, 03:23 PM	#4
MAS Tequila Join Date: Jan 2009 Location: Psychiatric Ward FL Posts: 3,429	Very hgih idle speed Yes it will run with the ground (I would disconnect the positive) wire unhooked. MT __________________ MT 2016 FLHP Psychiatric Ward FL VBA 936
	0

05-10-2011, 05:42 PM	#5
recumbentbob Sr. Member Join Date: Mar 2009 Location: Newburgh IN Posts: 3,404	Very hgih idle speed Well I found what it was. I have Chuckster's dual intake plate kit. When riding home it was surging so I thought it had to be a vacuum line and I was right. The two lines that go thru the plate get capped of with rubber caps and the pop thru the intake blew one of them off. It was laying in the bottom on the air filter. I can't believe it didn't get sucked into the engine. I got lucky for once..... I'm getting two new ones at Autozone and will glue them on with Loctite silicone adhesive. __________________ VBA #01084 "A well regulated militia being necessary to the security of a free State, the right of the People to keep and bear arms shall not be infringed." Login or Register to Remove Ads
	0

05-10-2011, 06:25 PM	#6
ringadingh Join Date: Aug 2007 Location: Newmarket Ontario Canada Posts: 35,387	Very hgih idle speed The cap was probably trying to get sucked into the motor, you got lucky. Although I doubt one of them caps would really do any damage even if it did get sucked through the motor. __________________ 2002 Nomad aka Bountyhunter VBA #27 VROC #18951
	0

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
2008 Nomad Idle Speed Dilemma	billyboy	1500 & 1600 Nomad	29	06-09-2010 08:26 AM
idle speed	gordy	1500 & 1600 Nomad	18	04-30-2010 04:24 AM
06 idle	ronnie	Vulcan Nomad/Vaquero/Voyager	5	09-21-2008 10:56 PM
Idle	jstapleton	Vulcan Nomad/Vaquero/Voyager	0	05-01-2008 02:10 PM
Idle speed changes	tomk	1500 & 1600 Nomad	12	01-04-2008 08:09 PM