Hey Folks,

I have a 97 FXDS with a stage 1 and SuperTrapp. I'm having trouble keeping the bike running from a cold start once the choke is off, and once finally warm and running, it wants to fart through the carb under very light acceleration around the 2600-2700 rpm range. I've recently made some adjustments to the mixture screw (small screw under the plug on back of carb) per some internet instructions......basically 2.5 turns "out" when screw was fully seated. Can you folks give me some ideas on whether further adjustment might remedy this issue?

Thanks,
joe

 

Intake leak. Change all of your intake gaskets, and give your carb a thorough cleaning, and a set of brand new jets while you're at it. Jets are too cheap to bother cleaning. I recommend any of the CV Performance kits.

 

To confirm a vacuum leak, squirt WD-40 around the intake gaskets and watch the RPM rise.

 

Did you fit a bigger low speed jet and main jet when you fitted the Stage 1 and the pipes?
If you didn't you are running lean.
Carb farts are usually lean mixture.

 

^^This^^

Time to change your jetting.

 

Thanks Guys!

I just ordered a CV Performance "Deluxe Kit", as I didn't perform the stage 1 and I'm not sure what jets are in there. Also order some new plugs, so hopefully this gets things corrected.

 

You need to order intake gaskets as well! If the bike has sat for any length of time those gaskets are very likely rotted, and when you have an intake leak, it also causes a lean mixture and farting out the carburetor under steady throttle.

 

Ack! You could've saved yerself some bucks & just spent $7 ea on a couple OEM jets. Depending on your altitude, a step or 2 up on the pilot jet & maybe a '88 XL needle ($11-ish) & you'd be golden.

Not knocking CVP's kit as I've no experience with it whatsoever, but why spend money you don't need to?

 

I hear ya Carl......but all the components to be replaced are nearing the 20 yr old mark, so I don't think it'll hurt to get things dressed up a bit. Also, it'll keep me busy when my kids aren't around. And honestly, I think it will be interesting to see if the "deluxe" kits helps smooth things out some.

 

Well, just installed the CVP Deluxe components.........replaced all jets (was running a 45 switched to a 46), emulsion tube and slide spring. Choke cable mount broke, quick trip to my local dealer and $15, and it was replaced. Previously had to run choke for nearly 3 minutes to keep it running, this evening, maybe 20 seconds........idles about 900 rpm and stayed strong. Went for a quick ride, so far, no farts and no decal popping........time will tell, but I'm happy.