Quote:
I really am wondering if its as simple as that vac line being off, it's very possible.
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If you were running on "prime", you were bypassing (eliminating) every part of the vacumn operated shutoff system. So if the fuel is getting thru the screen in the petcock, you were getting full fuel to the carb.

kerosene wrote on 03/17/10 at 07:05:29:


That is a tricky question, because you have to pull off the tank as well. I personally also pull the battery box out, it makes it much easier to get the carb out.

Since the carb is a pain to remove, I'd try to do several things at once.

A good long soak in one of those carb-bath-in-a-can things will get crud out of many nooks and crannies that may have been missed on the 1st cleaning.

The "white spacer mod" can be done.  Undo the top of the carb and that little clasp that holds the white spacer (which holds the needle down in a lean position).  Take out the white spacer, shave it down to 1/2 thickness and replace.  This mod will cure much of the backfiring and hot running that's blueing your header pipe.

The screws for the bowl can be replaced with allen head screws so the bowl will come off easy when you rejet (see Lancer or JetsRus.com for jets).

kerosene wrote on 03/17/10 at 10:03:30:


Carb bath in a can is carb cleaning fluid in a regular can instead of a spray can. It usually comes in a kit with the fluid and a basket. You place the carb in the basket and submerge it completely in the fluid for a period of time.

I don't know any brand names for the stuff though so I can't help you out there.

The only problem with using a carb bath is the rubber seals in the carb. You need to be sure to remove them before submersion because the cleaner will eat them up. I've never actually used an actual carb bath but that is what I have heard from others who have.

I don't know this carb very well, except for doing the white spacer mod, (which BTW turned out fantastic) but others here know how hard/easy it is to get the "main jet" out. The way you describe the problem, I would almost bet my last nickle that there is a chunk of junk stuck in the main jet, or at least floating near it. It mite save R&Ring the carb.

Sea Foam works wonders to clean a carb and you don't have to take anything apart.

Yeah, I think any auto parts store will have seafoam.  Did you ever get some fresh gas from a different station?  Remember to drain the bowl first!

Edit: Here are labeled pictures of the carb: http://suzukisavage.com/cgi-bin/YaBB.pl?board=tech;action=display;num=1098869040