So first time i rebuilt the carb on any of mine i had this problem. The snorkel tube and airbox have to be on. They are a slight restriction and if taken off it will cause it to run lean. You could re-jet it. But easiest fix is put it back the way the factory designed it to be. Tore it apart a dozen times swap on another carb. Ended up saying f-it for now and put it back together. Problem went away. Figured out without the airbox and snorkel tube it runs lean.

3 Minutes In - Subscribed. Awesome!

I miss not having snow on the ground being able to trail ride!

Hi, carb problem, I suppose... ☺️ Great video!

Mines a tank only issue is to start it I have to hold it wide open and it cranks for 20 seconds til its starts.

AM, Have you found the problem? I had the exact same problem. I have a 92 model. It would sit and idle like it was brand new, but when you gave it throttle it would sputter like that one is doing. Under your battery compartment hood, you will see a black box that says "main fuse/spare fuse." You're fuse is probably ok like mine was, but the wires underneath were not making good contact in the plug. That main fuse connection obviously controls spark to the plug. When I made the connection solid the engine raced on up with the throttle without the sputter. I have since cut out the Suzuki black box with the plug and installed an inline automobile fuse. It fixed it for good. I can replicate the condition by removing the fuse, or pulling the wire out of the connector. I know it sounds too easy but I would bet that is your problem.

I made a quad buggy with the same quad . I love it and was just trying to c how urs turned out

I gotta 2000 kingqaud and a 1999 Suzuki quadrunner 250

Got the same quad and it also had a fire🤣

Sounds like you need to find an 80 year old that loves working on small engines

I have a suzuki 4 wheeler engine but cant find out what kind of 4 wheeler?

I have a 87 250 quadruner cdi 150 used stator 450 new go

Damnit i got ripped off i paid 120$ for one with super strong spark but it was seized and ran out of oil and has 0 compression

Hello. good evening. I'm from Portugal. i bought a suzuki quadrunner 250, 4t, from 1993. on the left side above the front wheel there is a box with two rubber menbranos inside the same box. it has two tubes that go to the carburetor and another to the engine. I notice that one of the tubes coming out of the carburetor box is not doing right. can you tell me what it might be?

Where did you get your top end parts from? i have a 2000 quad runner 2504wd I'm fixing up and cant find parts anywhere.

Chances are, your camshaft was out of balance and your valve heads we’re out of spec

do u remeber where u got the cam to got on im building and want to do a big bore and put a bigger cam

Did you just take off the plastics to make like a buggy

I loved the intro to your vid. Also do you think the caltrec one way bearing was weak or do you still believe it was the carb issue? I ask because my starter also turns when i use the pull cord. Just got this thing and that was the first thing i noticed.

Hey is it running ok yet? I,m fixing a quad runner for my son and have similar problems with one way gear, poor idle but sometimes really high idle. Takes forever when letting go of the throttle until it goes down to idle. When I bought it the guy selling told me the valves very faulty which they may be but I found that the engine was full of gasoline. That might make it run a bit strange... Think the one way gear problem might have to do with this. Anyway, looking forward to an update on this project.

the fuel pump is your problem it is spring loaded and the vac line has hard time passing the fuel i had the same problem and i fixed it by using a riding mower pump from john deer and the problem went away. here is 1 of my videos of many on the king quads 300 kzfaq.info/get/bejne/mribpLN8najNj2w.html is video will go into more detail about it and it shows that same mistake i made when buying that same fuel pump you did also make sure your needle is set at the half way point