BuggyMasters.Com - An On Line Mini Buggy Forum and Go Kart Forum

Go Back   BuggyMasters.Com - An On Line Mini Buggy Forum and Go Kart Forum > General Mini Buggy and Go Kart Forums > Go Kart General Discussion

Go Kart General Discussion Forum for general go kart discussion.

 
 
Thread Tools
  #1  
Old 02-04-2015, 10:39 AM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default Yerf dog spider box running REALLY rich

Brand new carb...oil had the viscosity of water due to gasoline inside the oil...changed oil. The kart still runs lean. Runs kinda rough, smokes A LOT of white smoke. Was fine before sitting for awhile. NEED HELP!

Thnx
  #2  
Old 02-04-2015, 11:06 AM
x-bird's Avatar
x-bird x-bird is offline
Power User
 

Join Date: Oct 2011
Location: Penciltucky
Posts: 2,518
Default

let warm up and run for awhile and see if the white smoke goes away. you may have water sitting in your muffler. if the smoke doesn't smell like oil, that's the likely issue. if you're getting oil into the combustion chamber, it'd be more gray tinged and you'd be able to smell it. If it has no real odor, you'll need to run it until it all evaporates out or take the muffler off and drain it.
  #3  
Old 02-04-2015, 11:37 AM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default

It's been run for probably a good 1/2 hour and the smoking is on/off. If I restrict the fuel flow it stops smoking then dies. Once shut off, the tail pipe is smoking and the carb is gurgling and smoking as well. Unburnt fuel is entering the exhaust somehow...thanks for the reply. Any more input?

Thanks!
  #4  
Old 02-04-2015, 11:41 AM
liduno liduno is offline
Heavy Contributor
 

Join Date: Aug 2014
Posts: 702
Default

If you have a vacuum operated petcock it may be leaking fuel into the vacuum line.
  #5  
Old 02-04-2015, 11:45 AM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default

It's a 2007 Yerfdog Spiderbox. As far as I know it is not a vacuum operated petcock.
  #6  
Old 02-04-2015, 11:48 AM
liduno liduno is offline
Heavy Contributor
 

Join Date: Aug 2014
Posts: 702
Default

Does your petcock have an on/off lever and 1 fuel line going to it? Or does it have 2 lines going to it and no lever?
  #7  
Old 02-04-2015, 12:04 PM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default

I cannot locate any petcock, for that matter. See pics below.

[IMG][/IMG]

[IMG][/IMG]
  #8  
Old 02-04-2015, 12:09 PM
liduno liduno is offline
Heavy Contributor
 

Join Date: Aug 2014
Posts: 702
Default

The petcock is where the fuel comes out of your tank. If there is 1 fuel line and 1 vacuum line going to the fuel tank then you likely have a vacuum operated petcock.

If the vacuum operated petcock is bad it can feed fuel into your vacuum line and make the buggy run rich.
  #9  
Old 02-04-2015, 12:14 PM
liduno liduno is offline
Heavy Contributor
 

Join Date: Aug 2014
Posts: 702
Default

Do a google image search for ''gy6 vacuum operated petcock''
  #10  
Old 02-04-2015, 12:15 PM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default

There is only one line going from the tank to the carb. If there is a petcock, I cannot find it. Ill keep looking.
__________________
2007 Yerf Dog Spiderbox
2003 Chevrolet Suburban
2001 Toyota Sequoia
2000 Mazda Miata 6spd
1999 Lexus GS300
1999 Mazda Miata
1995 Lexus SC400
1992 Lexus SC400
  #11  
Old 02-04-2015, 12:22 PM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default

I cannot find any petcock. It's just the gas line from the tank to the fuel shutoff with to the filter to the carb.
__________________
2007 Yerf Dog Spiderbox
2003 Chevrolet Suburban
2001 Toyota Sequoia
2000 Mazda Miata 6spd
1999 Lexus GS300
1999 Mazda Miata
1995 Lexus SC400
1992 Lexus SC400
  #12  
Old 02-04-2015, 12:23 PM
liduno liduno is offline
Heavy Contributor
 

Join Date: Aug 2014
Posts: 702
Default

If that's the case then it sounds like your float level or float valve[I call it needle and seat] need attention.

I would pull the bowl off and see if the fuel stops flowing once the floats are lifted. If it stops then you might just need to adjust the float level. If it doesn't stop then your needle and seat might not be sealing off the fuel.
  #13  
Old 02-04-2015, 12:39 PM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default

But the carb is brand new! Maybe it was put together incorrectly...thats all thats been touched recently and it had zero issues before sitting for 5 months.
__________________
2007 Yerf Dog Spiderbox
2003 Chevrolet Suburban
2001 Toyota Sequoia
2000 Mazda Miata 6spd
1999 Lexus GS300
1999 Mazda Miata
1995 Lexus SC400
1992 Lexus SC400
  #14  
Old 02-04-2015, 12:56 PM
liduno liduno is offline
Heavy Contributor
 

Join Date: Aug 2014
Posts: 702
Default

Did you clean out the gas tank before putting on the new carb? 5 months is a long time when it comes to gas with ethanol in it.

If you ran old crusty gas through a new carb you may just have a piece of gunk stuck in the needle and seat/float valve
  #15  
Old 02-04-2015, 12:58 PM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default

Thnx or the info. The gas tank was empty. Something else to add, when turned on after sitting for, say, a day or so, it will not smoke. Maybe after 2 minutes of idling it starts smoking and gradually gets worse. Also whenever I remove the oil cap, a lot of air hisses out like under pressure when engine is off....

I REALLY appreciate the help!

I will check the needle and seat.
__________________
2007 Yerf Dog Spiderbox
2003 Chevrolet Suburban
2001 Toyota Sequoia
2000 Mazda Miata 6spd
1999 Lexus GS300
1999 Mazda Miata
1995 Lexus SC400
1992 Lexus SC400
  #16  
Old 02-04-2015, 01:12 PM
liduno liduno is offline
Heavy Contributor
 

Join Date: Aug 2014
Posts: 702
Default

Quote:
Originally Posted by putt putt red View Post
Thnx or the info. The gas tank was empty. Something else to add, when turned on after sitting for, say, a day or so, it will not smoke. Maybe after 2 minutes of idling it starts smoking and gradually gets worse. Also whenever I remove the oil cap, a lot of air hisses out like under pressure when engine is off....

I REALLY appreciate the help!

I will check the needle and seat.
Well that sounds like a whole other issue. Excessive crankcase pressure usually means a clogged crankcase vent. Are you sure you have all the hose in the right places?
  #17  
Old 02-04-2015, 01:14 PM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default

Quote:
Originally Posted by liduno View Post
Well that sounds like a whole other issue. Excessive crankcase pressure usually means a clogged crankcase vent. Are you sure you have all the hose in the right places?
Would you happen to have a hose diagram for an 07 spider box?

Like I said, I wasn't the one to assemble it so IDK until I see a diagram.

THANK you.
__________________
2007 Yerf Dog Spiderbox
2003 Chevrolet Suburban
2001 Toyota Sequoia
2000 Mazda Miata 6spd
1999 Lexus GS300
1999 Mazda Miata
1995 Lexus SC400
1992 Lexus SC400
  #18  
Old 02-04-2015, 01:22 PM
liduno liduno is offline
Heavy Contributor
 

Join Date: Aug 2014
Posts: 702
Default

I don't but in most cases the crankcase vent tube will go from the crankcase to the airbox.
  #19  
Old 02-04-2015, 01:27 PM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default

Ok. If you happen to know where I can locate a hose diagram that would be helpful. To be honest, I don't know much about these engines. I'm use to the 97cc briggs, not the Howit. I will do my best to find fault in the hoses.
__________________
2007 Yerf Dog Spiderbox
2003 Chevrolet Suburban
2001 Toyota Sequoia
2000 Mazda Miata 6spd
1999 Lexus GS300
1999 Mazda Miata
1995 Lexus SC400
1992 Lexus SC400
  #20  
Old 02-04-2015, 08:21 PM
xlint89's Avatar
xlint89 xlint89 is offline
Senior Member
 

Join Date: Dec 2011
Location: cleveland OH
Posts: 1,064
Default

#1 Never assume the previous owner did anything correctly. You should verify the jetting in the carb, even if it is new. A lot of these carbs come from China. And they're not all jetted the same.

#2 what air cleaner are you running?

#3 please take pics of the hose routing going to the carb. I'm really interested in where the hose with the "T" is going.

#4 Check the hose coming off the valve cover for obstructions (crank case vent)

#5 Wouldn't be a bad idea to check the valves for adjustment while you're inspecting the vent hose in the valve cover.

There are good videos on U tube showing how to check/adjust your valves for the gy6 150.

This should help a bit too. http://www.familygokarts.com/manuals...ice_manual.pdf
__________________
My Yerban assault vehicle: 2.2mm stroker crank, 62mm Nikasil cyl, Taida large vavle head, American made valve springs, ported intake manifold, TM 28mm carb, stock CDI, Bando coil, TK exhaust, stock CVT except for the 14g sliders, 13/40 internal gears, 16T drive, 31T axle sprocket, 22" rear tires, and ONE BIG POTATO CANNON mounted on top..........

Last edited by xlint89; 02-04-2015 at 08:25 PM.
  #21  
Old 02-04-2015, 08:23 PM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default

I will get you pics tomorrow of the routing. I removed the air filter..is that what you mean by "air cleaner"?

Thnx for the input
__________________
2007 Yerf Dog Spiderbox
2003 Chevrolet Suburban
2001 Toyota Sequoia
2000 Mazda Miata 6spd
1999 Lexus GS300
1999 Mazda Miata
1995 Lexus SC400
1992 Lexus SC400
  #22  
Old 02-04-2015, 09:41 PM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default

Nobody has time for tomorrow, here are the pics. See anything unusual?

[IMG][/IMG]

[IMG][/IMG]

[IMG][/IMG]
__________________
2007 Yerf Dog Spiderbox
2003 Chevrolet Suburban
2001 Toyota Sequoia
2000 Mazda Miata 6spd
1999 Lexus GS300
1999 Mazda Miata
1995 Lexus SC400
1992 Lexus SC400
  #23  
Old 02-04-2015, 09:42 PM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default

The T-hose has one side going to the bottom of the carb and the other side goes nowhere. Also have another hose that is not connected to anything I think its a drain hose of some sort but I'm not sure.

Found the vacuum valve (petcock?) no lever or settings etc.
__________________
2007 Yerf Dog Spiderbox
2003 Chevrolet Suburban
2001 Toyota Sequoia
2000 Mazda Miata 6spd
1999 Lexus GS300
1999 Mazda Miata
1995 Lexus SC400
1992 Lexus SC400

Last edited by putt putt red; 02-05-2015 at 01:06 PM.
  #24  
Old 02-04-2015, 10:59 PM
liduno liduno is offline
Heavy Contributor
 

Join Date: Aug 2014
Posts: 702
Default

Removing the air cleaner can mess with your jetting. Not to mention it's terrible for your carb and engine.
  #25  
Old 02-04-2015, 11:43 PM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default

Hmmm...this is a surprising development. I thought it didn't really make a difference...well, I'll slap it on and see what happens, though, I'm sure something as severe as this is not caused by the air filter.

Thanks for the input AND your valuable time!
__________________
2007 Yerf Dog Spiderbox
2003 Chevrolet Suburban
2001 Toyota Sequoia
2000 Mazda Miata 6spd
1999 Lexus GS300
1999 Mazda Miata
1995 Lexus SC400
1992 Lexus SC400
  #26  
Old 02-05-2015, 08:45 AM
liduno liduno is offline
Heavy Contributor
 

Join Date: Aug 2014
Posts: 702
Default

It wouldn't cause the crankcase to fill up with gas but it can definitely make the buggy sputter and fart.
  #27  
Old 02-05-2015, 09:21 AM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default

I tried to fill the engine with oil (still is too low) but air bubbles would push about 80% of the oil right back out...so filling was in vain...see any faults with the hose routing?
__________________
2007 Yerf Dog Spiderbox
2003 Chevrolet Suburban
2001 Toyota Sequoia
2000 Mazda Miata 6spd
1999 Lexus GS300
1999 Mazda Miata
1995 Lexus SC400
1992 Lexus SC400
  #28  
Old 02-05-2015, 09:37 AM
liduno liduno is offline
Heavy Contributor
 

Join Date: Aug 2014
Posts: 702
Default

Every time you post you have a new problem. Is this for real?
  #29  
Old 02-05-2015, 09:39 AM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default

All of this has been happening already, no issues are new. I just remember them between post. It sounds to me like hose routing is at fault but I have no way of knowing which hose goes where...thnx
__________________
2007 Yerf Dog Spiderbox
2003 Chevrolet Suburban
2001 Toyota Sequoia
2000 Mazda Miata 6spd
1999 Lexus GS300
1999 Mazda Miata
1995 Lexus SC400
1992 Lexus SC400
  #30  
Old 02-05-2015, 12:28 PM
liduno liduno is offline
Heavy Contributor
 

Join Date: Aug 2014
Posts: 702
Default

If you have oil shooting out of your engine then you have either over filled it or you have serious blow by.
  #31  
Old 02-05-2015, 12:55 PM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default

It was only doing that because there was gas getting into the motor and filling with the oil. Now that I changed the oil it doesn't shoot out, it just has pressure inside the motor.
__________________
2007 Yerf Dog Spiderbox
2003 Chevrolet Suburban
2001 Toyota Sequoia
2000 Mazda Miata 6spd
1999 Lexus GS300
1999 Mazda Miata
1995 Lexus SC400
1992 Lexus SC400
  #32  
Old 02-05-2015, 06:47 PM
xlint89's Avatar
xlint89 xlint89 is offline
Senior Member
 

Join Date: Dec 2011
Location: cleveland OH
Posts: 1,064
Default

Yes, air filter/air cleaner. What are you using? The stock box, or an aftermarket UNI/K&N style?

That hose coming off the "T" concerns me. Bottom of the carb???? This may be a a HUGE problem. Might be why you're getting gas in your oil.

That is your vacuum hose going from the intake manifold to the vacuum fitting on the CV carb.

If you have air inside the crank case, check that hose coming off the valve cover.

I need a pic of your "vacuum valve". Yerfs didn't have one from the factory. They didn't eve have a petcock. Yours was added by the P.O. in line. (red lever valve just above the filter)
__________________
My Yerban assault vehicle: 2.2mm stroker crank, 62mm Nikasil cyl, Taida large vavle head, American made valve springs, ported intake manifold, TM 28mm carb, stock CDI, Bando coil, TK exhaust, stock CVT except for the 14g sliders, 13/40 internal gears, 16T drive, 31T axle sprocket, 22" rear tires, and ONE BIG POTATO CANNON mounted on top..........
  #33  
Old 02-05-2015, 07:16 PM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default

Thnx for the help. It's an aftermarket (I think) K&N style air filter. I tried running it, ran kinda crappy but never died or smoked. (didn't run it for more than a minute) I went to open the oil cap and oil spurts out as soon as I loosen the cap and oil dribbles out and squirts.

The hose with the T...my mistake it goes to the intake...see pictures.Thought it went to the carb for some reason...

Here are more pictures and a pic of the serf so you know what it looks like.

[IMG][/IMG]

[IMG][/IMG]

[IMG][/IMG]

[IMG][/IMG]
__________________
2007 Yerf Dog Spiderbox
2003 Chevrolet Suburban
2001 Toyota Sequoia
2000 Mazda Miata 6spd
1999 Lexus GS300
1999 Mazda Miata
1995 Lexus SC400
1992 Lexus SC400
  #34  
Old 02-05-2015, 08:19 PM
ckau's Avatar
ckau ckau is offline
Heavy Contributor
 

Join Date: Dec 2009
Location: central North Carolina
Posts: 915
Default

sounds like you have a few separate issues that are compounding into a real mess.
firstly that new carb .. it's most likely the jetting is incorrect, hence the smoke and rough running. The aftermarket carbs are intended for scooters and are not setup correctly for buggy's. If you have the original carb, your in luck. take the jets, main and pilot and install in the new. If not buy a 115 main and a 35 pilot jet. that will fix the carb.
The hose routing is questionable... like "x" noticed. that T in the vacuum line is wrong. There should be ONE hose only running from a nipple on the side of the intake to the top of the carb.
There should be a hose connected to the drivers side top corner of the valve cover. It is open to air. It is a vent breather. it should not be connected to anything. make sure it is free flowing. IF so that's where that extreme crankcase pressure is coming from.
The hose on the bottom of the carb is just a bowl drain hose. it can be removed completely if you wish.
fuel line runs from tank through a inline filter to a nipple on the drivers side of carb. No vacuum petcocks were used on the yerfs
  #35  
Old 02-06-2015, 08:37 PM
xlint89's Avatar
xlint89 xlint89 is offline
Senior Member
 

Join Date: Dec 2011
Location: cleveland OH
Posts: 1,064
Default

OK, now we're getting somewhere.

Remove that "T" and run a hose from the intake manifold to that fitting on the top of the carb in that third pic.

Ckau has given you some solid help.

Check/replace those jets

Fix that vacuum hose from the intake to carb

Check that valve cover vent hose
__________________
My Yerban assault vehicle: 2.2mm stroker crank, 62mm Nikasil cyl, Taida large vavle head, American made valve springs, ported intake manifold, TM 28mm carb, stock CDI, Bando coil, TK exhaust, stock CVT except for the 14g sliders, 13/40 internal gears, 16T drive, 31T axle sprocket, 22" rear tires, and ONE BIG POTATO CANNON mounted on top..........
  #36  
Old 02-08-2015, 09:58 PM
Miamieddie's Avatar
Miamieddie Miamieddie is offline
Heavy Contributor
 

Join Date: Jan 2012
Location: miami. florida
Posts: 610
Default

Yup on mine I have a hose going from manifold to the top passenger side of carb. (Diaphragm). The hose on the valve cover just hangs down low. Pull the hose off the valve cover and see if you can blow thru it. It may be clogged. It needs to breath.
__________________
2. 150cc carters. 1. Baja reaction 150cc dr2 variators Jerseydevil hp. Pipes unifilters gates belts. Yellow main springs hd. Orange coils.
  #37  
Old 02-08-2015, 10:02 PM
Miamieddie's Avatar
Miamieddie Miamieddie is offline
Heavy Contributor
 

Join Date: Jan 2012
Location: miami. florida
Posts: 610
Default

If you have a hose running into your air filter pull it out. You don't need that. I don't have one.you should have one hose from your gas tank going to a gas filter than to your driver side of carb.that should be it.
__________________
2. 150cc carters. 1. Baja reaction 150cc dr2 variators Jerseydevil hp. Pipes unifilters gates belts. Yellow main springs hd. Orange coils.
  #38  
Old 02-09-2015, 09:27 AM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default

Thanks for the help! I will try some of these and report back.
__________________
2007 Yerf Dog Spiderbox
2003 Chevrolet Suburban
2001 Toyota Sequoia
2000 Mazda Miata 6spd
1999 Lexus GS300
1999 Mazda Miata
1995 Lexus SC400
1992 Lexus SC400
  #39  
Old 02-13-2015, 12:34 PM
zman007007's Avatar
zman007007 zman007007 is offline
Senior Member
 

Join Date: Dec 2012
Location: Gray Court,S.C.
Posts: 1,476
Default may help

if no help now, maybe in the future.
Attached Images
File Type: jpg fuelvacuumdiagram.jpg (51.1 KB, 11 views)
  #40  
Old 02-13-2015, 02:51 PM
putt putt red's Avatar
putt putt red putt putt red is offline
Lurker
 

Join Date: Jan 2015
Location: RR NM...a mile high
Posts: 20
Default

^^That picture is very helpful...thanks! I haven't yet gotten to it since last week, but I will eventually. I'll post the results.
__________________
2007 Yerf Dog Spiderbox
2003 Chevrolet Suburban
2001 Toyota Sequoia
2000 Mazda Miata 6spd
1999 Lexus GS300
1999 Mazda Miata
1995 Lexus SC400
1992 Lexus SC400
  #41  
Old 02-15-2015, 05:51 AM
SYCARMS's Avatar
SYCARMS SYCARMS is offline
Supporting Vendor
 

Join Date: Sep 2009
Location: Senatobia, Mississippi
Posts: 3,375
Default

White smoke out the exhaust on an air cooled engine is oil. When the oil gets diluted with gas it only takes minutes of driving to wipe out the rings, piston, cam ect. The pressure in the crank is either from blow by or the crank case vent is blocked or plugged. As CKAU stated make sure the hose from cover is not blocked, it should just hang freely.
  #42  
Old 08-15-2019, 08:28 AM
Dwell Dwell is offline
Lurker
 

Join Date: Aug 2019
Location: Missouri
Posts: 1
Default

Can anyone update this thread? I am having the same problems with my yerfdog and worse. I am having fuel blowing out of the valve cover at acceleration. The cart set for about a weeks while I waited for a part. The fuel is oily.
  #43  
Old 08-15-2019, 09:52 AM
SYCARMS's Avatar
SYCARMS SYCARMS is offline
Supporting Vendor
 

Join Date: Sep 2009
Location: Senatobia, Mississippi
Posts: 3,375
Default

Sounds like your getting fuel in oil. If so do not start or run. Drain oil if contaminated with fuel. Problem could be stuck float or bad vacum fuel pump if equipped
 


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 04:31 AM.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.