Hey everyone... time for another chapter...

I have a 1999 XL1200C. It has an S&S E carb, Forcewinder Intake, and Bassani 2.25 inch drag pipes with baffles. It also has had the coil relocated to the side of engine FXR style.

The bike has been running "rough" for a bit. If I clean the plugs and "Seafoam" the motor it will run good for a while but after a few miles it will start to idle rough with an intermittent misfire and eventually the front plug will foul. I have gone through the typical checklist:

New plugs
New Accel 8.8 wires
Rebuilt/Cleaned S&S E carb

I just checked the compression tonight and its right at 150 on both cylinders.

The one thing that did strike me as odd is when I was checking the voltage at the coil I was only getting about 5.8 volts... is that normal?

If I had any hair I would be pulling it out right now

 

What size Intermediate Jet and Main Jet are you running?

 

To be honest... I don't remember.

 

Are the spark plugs black or dark brown in color when you remove them?

 

The rear plug has a light copper color to it. The front plug looks about the same right now but has been carbon fouling over time.

 

There is a screw on the S&S E that adjusts the "throw" on the accelerator pump...S&S recommends that you turn that screw all the way in when tuning the carb so you won't flood the motor with fuel...What I'm trying to do is go in a direction where you don't have to spend money replacing parts...The link below is a pictoral that shows the acclerator pump screw as item #3....If that screw is turned out more than a few turns it will dump a lot of fuel into the intake which can cause a rich mixture...It won't be easy to see how far that screw is turned out CCW without a flashlight and that would be a good place to start!

http://www.sscycle.com/carbquickguide/

 

Hmmmm... hadn't thought about that one. I will give it a look tomorrow.

Thanx

 

No problemo....Been doin' this for a while!!!

 

This thing has had me stumped for a while lol... I'm ready to stop wrenching and start riding!

 

It's all about timing!....Get the wrenchin' done before the ride and not during the ride!