All Things Moto! Dirtbike Forums

Go Back   All Things Moto! Dirtbike Forums > Dirt Bike - ATV - Suspension Forums > 2-Stroke Dirt Bike Forums > 2-Stroke Dirt Bikes - Suzuki

Reply
 
LinkBack Thread Tools
  #1  
Old 01-29-2018, 01:38 PM
2trebel's Avatar
Beginner Class
 
Join Date: Dec 2017
Last Online: 04-04-2018 06:30 PM
Location: Canada
Posts: 8
Question 1997 RM250 Fuel dripping down cylinder

     

So I recently bought a 1997 RM250 for pretty cheap, the guy claimed it had a top to bottom rebuild. From what I can see the bottom looks to be done, but not the top.

Compression is good but I looked down the spark plug hole and see alot of carbon buildup on the top of the piston.

Anyway, the bike is extremely hard to start, cleaned the carb, checked the reeds, I have fuel and spark and this is the only thing I think it could be. I will provide a picture of what I mean but when i took the intake and reeds off and looked in the intake, I could see fuel dripping down the sides of the cylinder. Could it be blown rings/ old piston? I'm out of ideas..

Picture of the fuel dripping: https://imgur.com/a/xWF89

Thanks
Reply With Quote
  #2  
Old 02-09-2018, 07:49 PM
Woody_393's Avatar
Age is a state of Mind
 
Join Date: Dec 2002
Last Online: Today 07:56 AM
Location: UTAH
Posts: 29,473
Default

That's interesting. I honestly don't know if that's good, but it does appear to have too much oil / gas in there.

It does run though?
Reply With Quote
  #3  
Old 02-13-2018, 08:51 AM
cowboyona426's Avatar
JOATMON
 
Join Date: Feb 2003
Last Online: Today 07:53 AM
Location: Newport, WA, USA
Posts: 9,468
Default

I don't think that much fuel in the cylinder is normal, it's probably flooded. Did you leave it parked with the fuel tap turned on?
Here's what I'd suggest- drain the tank and carb, clean out the carb one more time.
Remove the spark plug and kick the engine over 10-12 times.
If the plug is black, wet, or cruddy looking replace it.
Reinstall plug
Mix up fresh fuel
Pour a little fuel into the tank, then try to start it. If you kick for a while and start to smell fuel, it's flooding and you'll need to sort out if the issue is in the carb or somewhere else. My guess is that due to the fuel in the cylinder, the plug is wet or fouled and if the fuel was left on while the bike was sitting you may have fuel getting into the cases.
Reply With Quote
  #4  
Old 03-04-2018, 12:13 AM
Woody_393's Avatar
Age is a state of Mind
 
Join Date: Dec 2002
Last Online: Today 07:56 AM
Location: UTAH
Posts: 29,473
Default

Can't a float being set incorrectly cause this exact thing too? it can allow the bowl to fill up to the point that it will drain into the engine.

Seems like I remember something like that.
Reply With Quote
  #5  
Old 03-04-2018, 05:34 AM
ATM! Pro Class
 
Join Date: Jul 2011
Last Online: Today 09:01 AM
Location: Benton, LA
Posts: 4,888
Default correct

Quote:
Originally Posted by Woody_393 View Post
Can't a float being set incorrectly cause this exact thing too? it can allow the bowl to fill up to the point that it will drain into the engine.

Seems like I remember something like that.
THat is correct and a leaking float valve can do the same thing.

Paw Paw
Reply With Quote
Reply

  All Things Moto! Dirtbike Forums > Dirt Bike - ATV - Suspension Forums > 2-Stroke Dirt Bike Forums > 2-Stroke Dirt Bikes - Suzuki


Bookmarks

Tags
rm250

Thread Tools


Similar Threads for: 1997 RM250 Fuel dripping down cylinder
Thread Thread Starter Forum Replies Last Post
1997 rm 125 cylinder sleeve brabon 2-Stroke Dirt Bikes - Suzuki 3 02-19-2014 10:44 AM
1997 Suzuki RM250 Hghlndr Classified Ads 7 02-17-2010 03:12 PM
1997 RM250 no idle stillife9796 2-Stroke Dirt Bikes - Suzuki 3 05-08-2007 06:04 PM
1997 RM250 clutch slipping. Ekholm 2-Stroke Dirt Bikes - Suzuki 11 09-10-2006 08:51 AM
1997 RM250 Jetting for High Altitude forloan 2-Stroke Dirt Bikes - Suzuki 1 07-01-2005 09:02 PM


All times are GMT -6. The time now is 12:28 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright ©2002-2017, JDub Consulting, Inc. All Right Reserved.