Quantcast
Jump to content


Kolpin 90cc Quad ?'s

bruce

By bruce
in Kids ATVs and Youth Off-Road

 Share

Recommended Posts

quadnut20 Grand Master

quadnut20

Posted
Posted (edited)
It started out full tank of oil, It all drained to the cylinder. Took it in , mechanic said you have dirt in the pump. Mix oil/gas and no oil in tank he said it would be ok. Is there any way to check pump? Bruce

Did the mechanic clean out the pump ? I would use a 2 cycle oil made for that quad Find out what the ratio is Also Pull your plug and see what color it is

Edited by quadnut20
Link to comment
Share on other sites
hangingon Grand Master

hangingon

Posted
Posted

I'm sorry to have to disgree with your mechanic. If the quad was run without oil being pumped to the engine that will cause engine damage. I don't understand how all the oil from the tank got in the cylinder if the pump quit working. Their is a term washed out when too much fuel which in your case fuel & oil over loads the cylinder and can cause damage to the cylinder & rings. Did the mechanic check the spark pulg, comprission on the motor check the carb etc? A 2 stroke should smoke but how bad was or is yours smoking.

Link to comment
Share on other sites
bruce Contributor

bruce

Posted
  • Author
Posted

Hangingon, Im going to pull the plug tonight and do a compression test. What is a good compression reading? Plug should be a tanish brown correct? If black and sooty its runing to rich. Is this right? Also on the carb, there is a cylindrical piece srewed to it with wires coming from it. Im thinking it is an electric choke. Is there away to test it? Thank you for your time, knowledge, and patients.

Link to comment
Share on other sites
quadnut20 Grand Master

quadnut20

Posted
Posted
Did a compression test and got 100psi on the gauge.

Not knowing what it should be 100 psi sounds like it got plenty of compression ! My moneys on the chain saw mix oils that you use I would get some fresh gas and NEW 2cycle oil and mix it ! We used to do it in the 70`s when my Yammi 360 enduro`s injector pump went out and it worked fine !! although 32:1 seen kinda rich !! I use to run my 88LT250R at 50:1 JMO

Link to comment
Share on other sites
hangingon Grand Master

hangingon

Posted
Posted

Check the plug for being wet to from raw fuel & yes your right about running rich. The black plastic part is the choke I'm not sure how to check it. I had my daughters off last night and turned the key and it didn't move just a guess until the quad is warm would it move but in this case it would have to be mounted on the carb. The only way I know ours works is by starting the quad and once it warms up it idles down. For the compression I dont know you should be able to do a search and find a range it should be in. With any motor over time it's going to lose some compression over the years.

Link to comment
Share on other sites
hangingon Grand Master

hangingon

Posted
Posted

I went to the Koplin site to check out the Koplins. They seem to be the same as the e-ton which is what we have. It should be the same carb air filter box looks the same as well the head may be different by what I saw but yours is newer so they could have changed them later on. The left side motor cover as sanyco their used in scooters. And alot of the youth quads that are of good quality.

Link to comment
Share on other sites
hangingon Grand Master

hangingon

Posted
Posted

Sorry 1 more thing if you drain the tank and put new fuel & oil in before you refill the tank. On the bottom of the carb you have a drain hose just above it theres a screw if you unscrew the screw it will drain out the gas & chainsaw oil in the carb as well. On my daughters it has a fuel filter between the fuel cock and carb may want to check to see if yours has a filter and it's not clogging up our fuel filter is clear so you can see any trash.

Link to comment
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.

×
 Share
Go to topic listing

  • Similar Forum Topics

    • semicolon
      TRX350D fuel pump problem
      By semicolon
      Hi, I am having issues with my TRX350D fuel pump.  It suddenly stopped running so I have replaced all the fuses and cleaned all the terminals.  I have fitted a new pump, fuel cut-off relay and rectifier.  Still nothing!!  The pump runs when attached to a battery.  The engine will start on the choke and the filter fills with fuel but it will  not rev and dies when the choke is closed. I have power to the relay but nothing at the pump black/white wire when cranking the engine.  Any ideas where to go from here would be very much appreciated!!
       
    • BruceG
      2005 Bruin 350cc Oil pumping into airbox
      By BruceG
      Hi guys. I have a problem where the quad will start and run well for about 5 minutes and then it dies. On inspection the airbox has oil in it (quite a lot). The oil is pumping through the cylinder head breather hose. This problem first happened suddenly. I have since done the top end including, piston, gaskets, rings and valves. I have also done the carb (not that I thought that this was the problem). The compression seems normal. The only thing that I can think of, is that I did not grind the valves well enough. Anyone experienced this? If so, how did you fix it? Any other thoughts?
    • John Sinclair
      1992 yamaha big bear 350 carburator issues
      By John Sinclair
      I WANTED TO UPGRADE THE CARBURATOR ON MY 1992 BIG BEAR 350, SO I ORDERED A NEW CARB FROM EBAY.  ACCORDING TO THE WRITE-UP IT WAS A GOOD FIT FOR BIG BEARS FROM 1988 TO 1996.  WHEN I REMOVED MY ORIGINAL CARB I NOTICED THAT IT WAS DIFFERENT FROM THE NEW CARB MY CARB HAD TWO THROTTLE  CABLES THE NEW CARB ONLY HAD ONE CABLE.  HOW CAN I MAKE THIS CARB WORK ON MY TWO CABLE THROTTLE?  
    • Clydaho
      2022 Hisun Sector 550 Gas gauge stopped working
      By Clydaho
      2022 Sector 550, 414 miles on it and the gas gauge reads empty.  I topped off the gas and it didn't change.
      There is no fuse that I could find.  No access at the gauge cluster.
      Wiring on the top of the tank looks good, properly connected.
      Could the sending unit in the tank be stuck or broken?
      Has anybody removed the tank lid?  Any tricks?  
      Any other ideas?
      Thanks for any help,
      Clyde
    • Mhatayas
      Oil leak 1985 suzuki 250
      By Mhatayas
      What should I do about this , bad oil leak where the filter cover bolts on . Can I use some gasket maker 

COMMUNITY SECTIONS

ATV FORUMS

QUADCRAZY MEMBERSHIP

Be a part of best online community of ATV riders and join thousands of people who love ATVs! Share your ATV photos, videos, ATV rides, get help with your ATV and more. Not a member?

SIGN UP TODAY

ADVERTISE WITH US

FOLLOW US ON

  • Automotive Webmaster
×
×
  • Create New...