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Got my Yamaha Grizzly buttoned up finally and went for a quick 2 hour ride in the power lines with my neighbor, who has a Yamaha Kodiak. We have access from his yard, which is nice. Was a beautiful day today to get out and will try to go more often. Ran into two other quad riders with a sportsman and I think grizzly. Also ran into a dirt bike rider. 😎
I have two 2003 Suzuki Ozark 250s, both 2-wheel drive. Last time we rode them about a year ago, the red one was not running well, didn't want to idle, backfired a lot. The green one ran fine.
Fast forward...I ordered a carb kit for both of them, thinking the red one has some trash in a jet. Both of these ATVs have had little use and I've always ran the gas out after use (put an inline cutoff valve in gas line). I pull started the red one to verify it was still running bad. It will start and idle, but as soon as you give it any throttle, it dies instantly. Give it a little choke, dies instantly. Took the carb apart and it was spotless. Went ahead and cleaned all the holes with carb cleaner and blew everything out with compressed air. All new jets, main jet holder, and needles. Put it back on and nothing changed. Starts, idles (not for a long time), but dies as soon as you give it gas. Same happens when you put the choke on. It does the same thing when I try to run it turned to prime on the petcock as it does in the on position.
Not an air filter issue. It is clean and it does the same exact thing with no filter on it.
Thought maybe there was a float issue or maybe a damaged diaphragm, so I took the carb off the green Ozark and put it on red. Started up and initially ran normal and revved for about 10 seconds and then started doing the same exact thing. Starts, idles (not for a long time), but dies as soon as you give it gas. Same happens when you put the choke on.
So...not the carb
Thought maybe vacuum petcock was bad, but there's no gas in the vacuum line going from petcock to carb and gas flows freely when on prime. I even plugged the vacuum line at both the petcock and carb end and tried to run it with valve set to prime. Gas flows freely, but does exactly the same thing. I unscrewed the screw at the bottom of the bowl and gas flows thru carb and out bowl drain line when petcock is set to prime.
So, I'm assuming petcock is good?
Checked spark plug and it wasn't fouled. Reset gap, didn't help. Will swap plugs between Ozarks tomorrow but I don't think that is it.
Anyway, that he history and now you're all caught up. Scratching my head. Valves? These were bought at same time and have had little use. Suggestions?
By Dra O
posted a while back - it was running at one point - I have all the plastic shroud off - it's down to frame and engine now
-fuel pump: when line from petcock is attached, no fuel comes out other side to carb; the line to the carb is open (can blow through it); I thought when I cranked engine that the pump would spit out fuel on other side but it does not; I removed fuel pump and opened it up - diaphragm looks good - but internal areas had lotsa calcification build up - I cleaned this out and dried it good - the clear plastic pieces (?diaphragms) aren't broken - the spring w/ steel ball on end moves freely; am putting it back on tomorrow; but can anyone answer about the pump? isn't it supposed to pump fuel through it... to other side... to carb? puzzling
-along with fuel pump: I replaced petcock 3 weeks ago (gas tank had rusty fuel in bottom - cleaned it out prior to new petcock); when I turn petcock arrow NOT to on or reserve, fuel comes out of line; when I turn it to on or reserve, fuel doesn't come out; puzzling
-I don't know what's on back of fuel pump - it's a valve that has a hose coming out of it - looks like it goes to engine/carb - I haven't traced this out yet - what is it?
-can squirt gas on air filter and engine will run for 2-3 seconds then stop - fuel in top of carb (under diaphragm) does same
-it likely needs carb rebuild - will get to this - but something isn't allowing fuel to get from fuel pump to carb
-I THINK it has a mikuni model x carb - diaphragm is ID 26mm OD 68mm - hard to find inexpensive diaphragm, I guess because it's a model x
-last thing - I replaced solenoid due to old one clicking; I HAVE to be charging the battery or it won't start/turn over - battery just goes dead; but if charging, it'll turn over nicely; i'm guessing it's a bad battery
-any help appreciated - I've never owned an ATV before - inherited this beast from grandparent in-law
Hi bought a 2012 kingquad ASI last year a great machine which is a delight to ride, but I find sometimes it doesn’t go into top gear just revs high at about 42mph. Any idea ???
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By Sled Dog
Hello Team! Hopefully someone can help me. I've been to the Suzuki forum and its pretty dead. I should have been on this site a while ago as I own a Canam, Hondas and a RZR!
Anyways issue is the ATV won't start. Friend gave it to me to try get running. They installed a Amazon carb and machine did the same thing. This machine has 1100 miles and is not beat. Appears to have led a gentle life.
So the first thing I did was ask for the original carb. They do have and brought it over. But first I changed out all the old gas and put new in. Got it to start but would not idle. But could ride it around yard. Its a manual, went through all 5 gears. Runs like normal but would not idle.
So I got a Shindy rebuild kit and rebuilt the original carb. Reinstalled and almost the same thing. Starter spins and it tries to catch but doesn't until it does. Then it seems to run ok. Idles high but after a while it will go down.
So I take tank off and give a very good cleaning. Took off the fuel petcock. All looks good. No fuel in the vacuum line so I believe its working as it should. Cleaned carb again. Adjusted valves. Did not need. Reinstalled everything and same exact thing. Spins like a maniac for 10 or more seconds before it will start.
Spark plug is black. Brand new one too. I checked the spark and did not see any. Googled how to do it and I was doing it right, tried again, now I have spark. Hmmm. Kept checking and always had it.
My battle plan now is to clean the Amazon (Chy-na) carb and install that one. If it does the same exact thing I'll figure its not the carb. If it does something different this will tell me nothing as I don't trust the Amazon carbs!
But now I've read that these models Eigers have issues with the fly wheel magnets coming loose. And affecting spark. Anyone know if this sounds right? Maybe if the spark is out of time it makes it harder to start but once started the running engine can overcome that?
Oh yeah, compression is 130, spec is 142. Not sure I trust my Harbor frieght compression tester though. I'm bringing it to work to get the gauge calibrated.
Sorry so long winded but I like to give all the details I can for the people in the know! Anything anyone can suggest I do? Thanks for your time!
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