What have you done to it?

check vac line for gas
check float height
how old is the bike
where are you located
do you have a dog

Check your oil for fuel too , smell it. Petcock or carb or really plugged up air filter.

Instal a 55 pilot jet and a 152.5 main jet, make sure the washer is under the main jet. 3 washers on the needle should do you good.

It's one of those E3 plugs - it was just the one that Amazon said was compatible and I could get same day.

As for the rest of the questions:

* It is a carb kit, but it's a good kit that ran me $45 just for a minimal number of parts and not one of those $10 kits that included everything. For example, the air/fuel mix screw looks exactly like the original, it wasn't one of those longer ones.

* It's got a Raptor petcock on it

* Washer is on the main jet like it should be

* I did go down a size on the main and pilot

* I did take out the air box and put in a K&N style filter and rejetted it one smaller than it already was - not sure if I have to go even smaller.

* There's no fuel in the oil from what I can see.

* It's pretty much been like this since I got it.


I bought this bike for $50 not running. Whatever fuel was left in the tank leaked out and around into the crankcase. The guy I got from said he had it running for a little bit but it was really rough. I wonder if he was running it with that fuel/oil mix in the crankcase and if he did did that screw something up.

I did a carb rebuild and yes, at first I used a cheap kit from amazon but then I redid it again using an All Balls kit 26-1705 see https://www.allballsracing.com/26-1705.html

Now, I haven't messed with the needle at though - should I give that a try? It's still using the stock Suzuki one with the multiple notches on it because it looked perfectly fine so I didn't feel a need to replace it.

You mentioned your slide needle is "stock, with multiple notches".  Multiple notches doesn't mean the needle is stock.  The Mikuni logo and size designator will tell you the story.

What year is your bike.  The early models used a 5C16 needle that had 3 notches.  The later models use a 5C39 needle with only 1 notch.  Look at your needle and tell if it has the Mikuni logo along with either 5C16 or 5C39.  A magnifying glass helps.

These are both genuine needles, early and late model.

Have you removed the needle jet and inspected it.  It should be an X7 or an X8.  It should be silver indicating that it is made from stainless steel.  Tell us about your needle jet.  What color is it?  What size is it?  Keep in mind that even if it may have started out as a genuine Mikuni jet, someone may have attempted to soup it up (i.e. drilled it).

See how the genuine Mikuni part is silver.