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By LOGAN WARNER
Hello everyone, I’m new to this forum. I have a 98 king quad 300, I cannot get it to run right. It will start up and run for a little bit but then it starts sputtering when you give it throttle. It appears to me that it is getting to much fuel.
this is what I have done to it: new carburetor, new fuel filter, adjusted the valves.
I have a gentleman that asked me to service his bayou for him. I have always wondered what oil should be used in atv engines? Pros? Cons? What weight should be used in what type of weather? Is there one kind that I could bulk buy and safely used in any quad I worked on or owned? What about performance? Engine Life? This has always been a 🤔🤔🤔 area for me with quads as far as why you would use one type of oil over another....
By Dwight Williams
Ok, so I bought this scream of a deal the other day - a 94 King Quad 300 for $40.00. It's been sitting outside with no carburetor on it for about a year. Its rusty, missing some parts, wiring is all cut up and spliced etc. No seat, no racks but the plastic is all there minus the headlight housing. Anyway, who can pass up a $40.00 quad right? I get it home and looked at the sight glass for oil level, it's about 1/2 oil and 1/2 water. I drain it, refill it and turn the motor by hand (recoil starter is missing) and it turns over just fine. I worked on the wiring for about an hour and got it to turn over with the electric starter and got enough of it sorted out to get a spark. Did a quick compression test, 70 lbs. Wet test bumped it up to 90. Ok, so rings and cylinder washed out with water for a year, not too surprised. I thought 'what the hell' and sprayed some starting fluid in it and it ran for about 2 seconds - enough to show it's got life. Since then the compression has gotten worse, I can't get enough pressure to activate the carb diaphragm, therefore no fuel pump either. The compression is now around 60.
Anyway, my question is....is it worth it to try to get this thing going? I tore the top end down today and the cam and one of the rockers is pretty worn. I figured a top end job would be about $100 or so, depending on the condition of the cylinder but I'll probably have to put a cam and rockers in it as well. Doing some research on ebay I figure I'll have to spend about $500-$700 to make the whole machine right again. Much less just to make it run and use as-is but I won't really like it until it's right. I don't mind doing the work, I actually enjoy it but I'm concerned about what all that water did to the rest of the internals, I can't really test it all out until I can make it run.
I know it's a basket case but I'm not into it much at all, even if I do the top end and find something else wrong I'm still not out much. I'm leaning toward ordering the top end parts and going from there unless you can convince me otherwise - any way to check the rest of the internals without tearing it down? I plan on flushing the oil cooler before I do another oil change, I've drained it twice now and it gets milky almost immediately just turning the starter - I suspect the oil cooler is polluted badly.
I'll get some pictures today if anyone want to see them.
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About Maxxis International
For over 46 years, Maxxis International has delivered high-quality tires to both original equipment and aftermarket customers. Maxxis offers products for automotive,light truck, motorcycle, ATV, bicycle, lawn & garden and industrial use. Thecompany has operations in Asia, Europe and North America, and its products aredistributed in approximately 170 countries. For more information, please visit
What is your opinion is it worth paying the extra $ for the name brand Maxxis Bighorns or would you save your $ and go with the off brand Duro Power Grips? They are both 6ply rated and both Radial tires does any one have either of these or have a opinion thanks!
Maxxis Big Horn Review:
First thing I noticed upon mounting these tires was how much bigger they were than most 25'' tires. They measured around 25.5'' with 4PSI in them. They are close to 26'' with 6-7PSI in them. If you are considering a set of Big Horns definitely take the sizing into consideration.
These tires are on the heavier side. Although I did not notice much of a power difference.
Mud Performance - In the mud these tires do well but not great. Although, keep in mind they are an all terrain tire and not a mud tire specifically. If you are going to Big Horns from stock tires the Big Horns will spin circles around the stockers in the mud all day long. I have not been able to get myself stuck with them yet during normal trail mud riding.
They do perform very well in mud, but if you are a 100% mud rider than you may want to look into a more mud oriented tire.
Woods Trail Performance - This is where I found the Big Horns to be most at home. They grip up like glue on logs and go right over them with no hesitation.
The great thing about the Big Horns in this type of riding is just peace of mind. The 6 ply radial tire is indestructible to the sticks and thorns that are found all over the trails.
Snow Performance - The Big Horns performed flawlessly in the snow. They mostly floated on top as long as you take it easy on the throttle upon taking off. Overall in the snow I was really pleased. I felt confident going higher speeds in icy areas with them. I had good gripping control.
Sand Performance - Excellent tire in the sand. My stockers used to spin and dig in. They float on top and get you moving!
Overall Performance - I am extremely impressed with this set of tires. So far they show no wear with 1000 miles on them. After I have 3000-4000 miles on them we will know for exact how well they wear. But so far so good!
Mud Performance - 7/10
Woods Trail Performance - 10/10
Snow Performance - 8/10
Sand Performance - 10/10
Overall Performance - 9/10
This video was submitted to the QUADCRAZY Video section by racers.
Description of Video: #129 Bentley Bellinger Holshot at MX Southwick Nationals With a Bristol racing ATVDOA JEMBS Performance Honda 440 EX Spanking ALL the 450s
Video Tags: Racing ,Holeshot
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