Which spark plug?

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Mar 14, 2012 | 06:42 PM

#11

1flhtk4me

Seasoned HDF Member

Joined: Apr 2006

Posts: 10,675

Likes: 95

From: Billings,Mt.

Was your battery fully charged before you took the bike out?

Mar 14, 2012 | 06:49 PM

#12

fabrik8r

Outstanding HDF Member

Joined: Jan 2010

Posts: 2,916

Likes: 31

From: earth

Quote:

Originally Posted by Fast Aire

A common mistake that many make is cranking it up during winter & let it idle for a little time. Idling for 20 mins doesn't allow the motor to get off the "rich" setting used for cold cranking. That can lead to a fouled plug. If youre gonna crank it, go ride it.

It may not apply to your circumstance but it does apply to many.

I like NGK or Autolites but have used Champions in the past. Normally I run 1 range cooler than stock.
I find that HD plugs are a bit too hot for my tune.

Buy what makes ya happy.

.

High idle and warm up enrichment ends when the front head ET sensor reads 167F, that takes about 4 min from cold start up. The HD 10R12s are VROD plugs that you might like if you prefer a colder plug.

Mar 14, 2012 | 06:52 PM

#13

Gliden

Club Member

Joined: Jun 2009

Posts: 5,323

Likes: 37

From: NJ

Quote:

Originally Posted by KCFLHRC

If you used StaBil I seriously doubt it's a gas problem. Stock plugs are probably the best.

If your compression is still stock then it's stock plugs.

Just throwing this out there.....gas filters have been known to clog as low as 25k......

Mar 14, 2012 | 07:06 PM

#14

rbferg

Road Master

Joined: Mar 2011

Posts: 988

Likes: 1

From: Ashevegas

I use the H-D Platinums...perfect temp for my 96"
http://www.harley-davidson.com/gma/g...bmLocale=en_CA

Last edited by rbferg; Mar 14, 2012 at 07:12 PM.

Mar 14, 2012 | 08:04 PM

#15

monumaker

Thread Starter

Road Captain

Joined: Jun 2010

Posts: 734

Likes: 3

From: NE Ohio

Report. I put in new hd double platinum plugs put in fresh 93 octane gas (sorry the 96 was a typo) and went on a 15 mile test ride. Unfortunately it's exactly the same. Any fresh ideas? As I said before the bike was 100% fine before I parked at the end of November. Bike fired up and was fine for about 3 miles today. Now it $hit. It will fire up and idle fine, it's once u hit the throttle it's like it not there. No power. 4 th gear at 55 felt like I was in 6th goin 55. What ya think?

Mar 14, 2012 | 08:05 PM

#16

monumaker

Thread Starter

Road Captain

Joined: Jun 2010

Posts: 734

Likes: 3

From: NE Ohio

FYI: battery is good and the bike has 9188 miles.

Mar 15, 2012 | 12:13 AM

#17

103 sedona orange

Ultimate HDF Member

Joined: Jan 2011

Posts: 9,850

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From: Sacramento, CA.

Hd oem

Mar 15, 2012 | 02:59 AM

#18

electradad

Cruiser

Joined: Apr 2008

Posts: 183

Likes: 0

From: West Virginia

I hate to say it. But I am assuming your still under warranty. I think I would call your stealer and see what they have to say. I'm thinking throttle position sensor.