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By Bud03420
I just got this bike and not getting any spark I know nothing about it so before I spend any money on it I like to see if it fires dose it have to have a battery to complete a circut and spark cause it dosent have one
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By AimlessMoto
Hey guys, new here, but haven't found ANY answer to my specific problem on a Suzuki dedicated ATV forum, so here's to hoping!
I acquired a 95' Quadrunner 250, 4x4, (LT4WD) for practically nothing with no spark. The PO had tossed in a used stator which didn't fix the problem... so I went all routes (though cheaply) to narrow down the initial problem of no spark.
Plug, coil, CDI (caltric) and stator w/pickup (caltric) were purchased and installed. And it RAN, but bogged horribly and would not rev past 1/4 throttle.
I checked fuel flow, vacuum lines, all the normal stuff, no issues. I decided to check the valves and cam... well, there was one problem. The cam was 1mm under the lowest spec in the manual. So, in-came a new cam, Stage 1 Hotcams... also threw in a new set of shindy valves, lapped them, replaced the valve seals, and the timing chain.
Back together again (w/stock airbox and new oiled filter). Now it idles even better, still boggs at 1/4 throttle, but will rev past it if you hold the throttle open for a second. Ahaha... success!
So I was able to ride it above 1/4 throttle once I had momentum... could shift through the gears, all was good as long as I kept it over 1/2 throttle. Took a long enough ride to break in the cam properly at least so I won't have to worry about that.
Now, I start fiddling with the carb. It's clean as a whistle, stock, with stock jets (new replacement Mikuni jets). Same problem.
I start thinking, maybe this is fuel related and the bike is having an issue transitioning from idle jet to main jet... so I LOWER the needle by raising the clip 1 spot. Now it revvs up in neutral with no bog, but it boggs about the same trying to ride it. So I move the needle down again with the clip on the top slot. Better, but still has a bit of bog at 1/4 throttle.
The last bit of advice I got was to ditch the CV carb... so I sprung for a brand new Mikuni VM30-83 round-slide. Bolted it up, blew into the vacuum tube to fill it with fuel (no vacuum port on this one) and she fired right up... but there is still a bit of bog, it's just masked by the fact that I'm not waiting for the vacuum diaphragm to open.
So I feel like each little step brings me closer, but not perfect. I'm now wondering if this is still in-fact a carb tuning issue (I have some jets I can fiddle with and maybe lean-out the idle jet a little.) OR if the cheap-a** Caltric Stator/Pickup is what's causing these issues.
I have a 95' KingQuad with 400 miles on it... like new.. runs like a top... I've tried both the stock QR and the Caltric CDI boxes on it, and it revvs up and runs like a champ.
The only unknowns between the two systems are the carb, and the stator/pickup. My next step in troubleshooting is to rip apart the King Quad and test it's CDI on the Quadrunner... but considering there is no change to how it runs I doubt it will lead to a solution.
HOWEVER... I tried the stock CDI just recently after running the Caltric this whole time, and the bike runs like garbage. Hardly idles, and won't rev up at all. So, that is my one smoking gun telling me that it's either the pickup coil or the stator itself.
Has anyone had a problem even CLOSE to this? I can't image the carb would be causing this many issues, especially going to 2 different ones, both with stock jetting to OEM, and exhibiting the identical symptoms... the only change is when different CDI's are plugged in, or when the needle valve leans out the mixture.
Also, I checked the piston, rings and bore when I had it apart and they're like-new... no scoring, rings are loose, cylinder is still round and has honing marks still int he bore. Stock piston, stock bore size and it has 160psi compression. Battery is brand new, and I've tried 3 different R/R's, none of which change any symptoms, but slightly vary the charging voltage by .2-.5 of a volt depending on which unit. Also tried a new coil which changed nothing.
ANY help would be appreciated. Too much invested to not get it running right.
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By mrfartsalot
i have a 2001 suzuki quadmaster 500 4x4 that the primary cvt clutch is rusted on any ideas on how to get it off i want to try to reuse it if possible.
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By Jason Magnone
As stated above working on a 1999 Suzuki LT-F160. I think I’m having trouble with the carburetor. I keep fouling spark plugs. Full disclosure, I did make a poor attempt to “rebuild” the carb (that’s why I think that’s the issue). No idea if the new parts are at the correct “settings” (gaps and such) I believe the starting point is 1.5 turns from bottom out on the adjustment screw (is there another adjustment I don’t know of?). Doesn’t feel like I’m getting gas drawn through the carb (clogged jet maybe?), the plug isn’t wet at all (assuming why they’re fouling?) Not a great deal of experience working on carbs and not having much luck on finding a lot of info on the 160’s.
1st- by chance can I swap out the original carb (13200-02C03) for an LT 250 model (think the HA01050). They’re only about $30 apposed to $200. That would at least narrow down if it’s a wiring problem or carb issue.
2nd - The wiring has been minipulated at least a dozen times (before I acquired it, my cousin got it from a buddy kind of thing). Hopefully don’t have to dig into this too much as it’s currently a bit if a mess.
I was told it ran last year...
Any imput would be greatly appreciated
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By Ajmboy
Pretty good video on the history of Suzuki ATVs if you are interested in some ATV education. Starts off from when three wheelers were the norm.
Suzuki, A company with about 100 years of manufacturing history is company built on bold innovation and the courage to push forward with new ideas. One of these new ideas was created in 1983, when Suzuki invented the first four wheeled ATV and introduced it to the world. At the time three-wheeled ATVs were the norm, and Suzuki’s four-wheeled ATV the LT-125 created an al-new vehicle category and literally changed the industry.
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By Chomp
I' bought a suzuki from our local scrap yard I got it running yet when I give it gas it lugs down muffled both rear tires slant outward are that suppose to. That act like bearings are bad I checked bearings and there goodbeari and there
LT400fw
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