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Message started by Baldeagle on 09/07/10 at 18:36:41

Title: What next?
Post by Baldeagle on 09/07/10 at 18:36:41

I have an 05 S40(purchaesed new)......have done the carb mod four years ago, removed the plug and have it turned out 2 1/2 turns. This was 4 years ago........This pass week replaced stock muffler with a Dyna. I now have the tank off working on the petcock. Found a hole in vacuum line and replaced. Also replaced fuel line. Removed spark plug and it was jet black. Have been running rich for some time.. Manual says main jet is #145 with the pilot being 52.5. I need advice on leaning the mix a little. :) :)

Title: Re: What next?
Post by Serowbot on 09/07/10 at 18:41:30

Adding the Dyna may have leaned you out already,... replace the plug and test again...
You might also consider a less restrictive air filter to match the new muffler... K/N direct replacement or mod the stocker with foam (how-to in the tech section)...
;)...

PS... Is your air filter clean?... dirty will make you run rich...

Title: Re: What next?
Post by Baldeagle on 09/07/10 at 18:52:54

Have a k/n for several years now and have keep it clean.. I cleaned up the petcock today and hope I didn't hurt the diaphragm. So far with the Dyna......have had no backfires after shut down. In fact it was running better. Just need to correct being to rich.

Title: Re: What next?
Post by Serowbot on 09/07/10 at 18:55:23

Just drop the mix to 1 1/2 or 1 turn... I doubt you need to lean the jetting with your set-up...

Title: Re: What next?
Post by Baldeagle on 09/07/10 at 18:56:13

Will definitely test to see if the Dyna will lean it. I'll turn it back to 1 1/2. Is that the air mixture??

Title: Re: What next?
Post by Serowbot on 09/07/10 at 19:40:19

yup...

Title: Re: What next?
Post by verslagen1 on 09/07/10 at 19:58:36

since you didn't say so, i assume you didn't do the wht spacer mod?

even if you did, might be ok to do it in reverse, add a spacer. might take you down half a jet size.

Title: Re: What next?
Post by Baldeagle on 09/08/10 at 06:49:17

Did the white spacer mod shortly after purchase. Waiting now for the oblong rubber ring to put petcock back in and re-asemble her.

Title: Re: What next?
Post by Routy on 09/08/10 at 07:25:43

Seems strange, after 4 yrs,....of running good..I assume, that it would now needs carb mods, just because changing to a Dana. The Dana could run a little leaner, but only at the higher speeds.
You didn't move did you,....like from the Valley to the mountains ?
When you did the carb mod(s) 4 yrs ago, did you have a reason for doing so, or just because it seemed to be the "in" thing ?

Believe it or not, some stockers run almost great stock as a clock.
My '07 needed a 1/2 spacer mod,....thats all.

A friend bought an '06 2 months ago, that appears to be stock (plug still in carb), stock exhaust, runs perfect.

My Bro bought an '07 new, never touched it, except installed a Dana, and it runs perfect, except a little cold blooded.

Title: Re: What next?
Post by Baldeagle on 09/08/10 at 09:58:12

Hey Routy......Did the white spacer mod a few months after purchase...Machine was backfiring like mad...logged on to this site and the thing going at the time was the spacer mod and pulling the plug on the air mixture screw. Several months ago I started having a stalling problem intermittently. Dealer no help. This same time it started the backfire at shutdown.(Hole in muffler). Install Dyna last week and no more backfire. Saturday it stalls. Start disasemble process. Hole in vaccuum line and plug not even hand tight. Probably the cause of stalling problem. New plug installed.... will asemble(after a few more checks and cleaning up a few items) and see what happens. Some of my problems and questions I have seem some what dumb because I don't know what the hell I'm doing. Great site!