Quantcast
Jump to content

  • Join Today, It's Simple and FREE!

    As a member, you can post in our forums, upload your photos and videos, use and contribute to our downloads, create your own member page, add your ATV events, and even start your own ATV club to host your own club forum and gallery.  Registration is fast and you can even login with social network accounts to sync your profiles and content.

mmmPUDDIN

1988 suzuki quadrunner 250cc 2x4 (LT-F250) not starting

Recommended Posts

Posted (edited)

I've had this machine for 2ish years, has ran great up until winter. Sometime during then, I managed to break the exhaust right before the muffler. The summer before it had a hard time idling, but we fixed it by cleaning the carb, and messing with idle. Near the end of last year, the only way for it to fire was the have full choke, and full throttle, and the engine bogged down and you had to keep on throttle for 25mins. Over winter, the throttle had dislocated, and I got it back in place. We got it running, and all was good. Spring came along, and now it doesn't start at all. A fluid is coming out of the exhaust, and I'm told it could be water from over winter. I checked the airbox, and the air filter isn't for this quad, it also is barely sucking air. There appears to be little to no compression, based on this. I'm pretty sure the engine is flooded, as the spark plug produces a spark, but is oxidized. I don't know how the previous owner treated it, or when it's last oil change was. A bolt on the engine has either oil or gas seeping through it,abd was loose. I tightened it and it consisted. The engine is basically positioned in the rear, and it needs a good clean, I don't have a pressure washer, so I can get the built on dirt off. any recommendations on how to get the beast started again?

Edited by mmmPUDDIN

Share this post


Link to post
Share on other sites


Fluid from the exhaust could be gasoline, did you replace any parts in the carb? If not, buy a rebuild kit, they can be found on ebay for under $30. The float on the carb is probably leaking and flooding the engine. Check the engine oil too see if it is too full, if its too full it might have gas in it. You will need to replace the engine oil and filter if the oil is mixed with gas.

Share this post


Link to post
Share on other sites
On 5/5/2019 at 11:05 AM, Cj Winds said:

Fluid from the exhaust could be gasoline, did you replace any parts in the carb? If not, buy a rebuild kit, they can be found on ebay for under $30. The float on the carb is probably leaking and flooding the engine. Check the engine oil too see if it is too full, if its too full it might have gas in it. You will need to replace the engine oil and filter if the oil is mixed with gas.

I recently cleaned it, but didn't replace any parts. Again I don't know if the previous owner did, as I'm unfamiliar with this carb and engine. The oil doesn't look too high, but It could be mixed with gas, I will check 

Share this post


Link to post
Share on other sites

I had all the symptoms you have and adjusting the valves fixed mine. Oxidized plug sounds like water to me.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Similar Topics

    • By John Ford
      i ordered a keihin carb for my 07 trx 90 and it fits nicely but the new cable they sent is way too long and i can't make it work.  the old honda cable cap [that fits on top of the carb] is too small to fit.  the keihin cap is approx 3/4 or 19mm.  honda cap is more like 1/2 in.  the keihin has a rubber boot on the cap where the throttle cable goes through . i don't know how to find the right length [most cites don't give the length].  i'm not sure how cables fit into that boot  and do i need to add the length of the boot to the cable?  the old honda cable is 28 inches total, but the cable movement is only approx 2'' which would not be enough to reach the actuator block on the keihin.  looking to find a throttle cable compatible with the keihin.  any help, please.
       
       
    • By JacobSlabach
      got 7 atvs off CL recently for a good price.  one of which is a yamaha warrior.  anyone know where the vin is printed on this bike?  Haha good place to start as I do not know year or size yet.  The former owner says needs exhaust ans and clutch work.  he said it ran fine until the clutch cable broke and then I couldn't get the new cable adjusted right and it would grind gears.  things I see:  clutch cable locked up again, no brakes, carb leaking (green with algae around the bowl and has gelled gas stalagtights on it), aftermarket exhaust melted the airbox so I need something different and a new air box.  I would like the use the current exhaust if I can but I have a feeling its a redneck fix as it looks like there is an ace bandage holding it to the exhaust pipe (its an aftermarket slip-on exhaust), so I'm not sure about that- lets get the bike running first.  also, battery (looks brand new, what a shame) is dead, 0 volts.  Otherwise, bike looks to have not been wrecked, and plastics are ok (it sat outside under a 'tarp' for 3+ years since it was run last).  any tips and advise on where to start first would be awesome as this is my first clutched bike (manual).
      the clutch is my main concern- I've never rode a clutched bike so I dont even know what its supposed to feel like.  lol I'm spoiled on my automatic polaris 
    • By Squirrel
      So I bought a Bayou 220 as me 'Black Friday' score, and was informed it has carb issues.. 
      A little history from the previous owner: they suspected the carb was bad as it was 'running like crap' so they did a rebuid kit on it. Didn't fix issue so they took it to a shop where the tech installed an aftermarket(?) carb, but had to modify the throttle cable to get it to work. Quad ran great at 1/4 throttle, but anything above that and the throttle would stick and the machine would run like garbage again.
      What I know and think: I hear carb issues are common and fairly easy to fix. Also, I think they used the 'universal' rebuild kit that claims '88-'11, but the jets and such were different from '00-'03 (gaskets, etc. appear to be the same) so their original attempt was a good idea, just not good enough.
      They did give me the original carburetor with the 4-wheeler, but it has the wrong internals. I'm thinking if I can get the right jets, springs, etc for the rebuild, I should be able to get this thing running right. Of course, I still need to charge the battery back up, change all the fluids, replace fuel lines, plug and wire.. ya know, the basics for a machine that's been sitting for roughly 9 months. lol
    • By tyler250rrocks
      i have a lt250r that has a over sized carb on it. is it to much
    • By Chad Dickerson
      I am goin nuts here! I have a 04 400 air cooled 4x4 , I'm a atv,car,truck,mower mechanic for yrs,just sayin. Ok it cranks and kinda fires now and again then after 5 min of cranking and stopping itl start if u touch throttle itl did then u start all over! If u let it warm up sumtimes u can throttle it up other times it just does! Just depends on it? When it stays running it runs awesome,no problems except it just does randomly like u shut key off? Sumtimes itl start right back up others itl do the no start thing! IV put new plug,adjusted valves and hot tanked carb? I'm at a loss here guys! Please any other ideas? I don't think it's anything to do with flywheel? It's not the auto it has a hi low reverse lever on left fender and foot shifter? Help please lol
  • Similar Tagged Content

    • By Admin
      View File 1985-90 Suzuki Quadrunner LT230 Service Manual
      1985-90 Suzuki Quadrunner LT230GE, LT-F230G, LT230S Service Manual
      Submitter Admin Submitted 06/29/2019 Category Suzuki ATV  
    • By Admin
      1985-90 Suzuki Quadrunner LT230GE, LT-F230G, LT230S Service Manual
    • By Admin
      View File 1985-86 Suzuki Quadrunner LT 250E Service Manual
      1985-86 Suzuki Quadrunner LT 250E Service Manual
      Submitter Admin Submitted 06/29/2019 Category Suzuki ATV  
    • By Admin
      1985-86 Suzuki Quadrunner LT 250E Service Manual
    • 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. 
  • Recently Browsing   0 members

    No registered users viewing this page.


×
×
  • Create New...