Increasing oil level

AresROC · 10-08-2018, 04:39 PM

Okay I need help figuring this one out... I think the obvious answer is blow-by but still...

Bashan 250 engine has 60 miles on it. I changed the oil morning just before the ride, intentionally leaving the oil level on the "L" low side, filling up less maybe 7/8 of a quart. After riding for an hour, immediately checking the oil level it was in the middle of "L" & "H". Okay not too bad.

1 week later I checked the oil level, and it's now above "High"... so

...

Is fuel somehow getting into the crankcase? I left the fuelcock in the off position. Gas was fresh there shouldn't be water in it, and we don't have much humidity here... Is it normal to have a new engine to have that much of a blow by? Everything is stock on this bike... I would think if fuel got into oil they would combust and burn off...

llr · 10-08-2018, 04:44 PM

A week later with riding it? or just sitting there?

How long after a ride of what distance did you check it?

AresROC · 10-08-2018, 05:03 PM

A week of no riding. The only ride after oil change was for perhaps 10~15 miles. The factory oil and first set of oil had streaks of "stuff" in them, no idea what they are. Bike has plenty of power and I already got Rotella T4 waiting in the garage.

Sclark1013 · 10-08-2018, 06:00 PM

In my experience, if you are getting blow-by, you can really smell the gasoline in the oil and even see a rainbow effect in the oil.

A similar thing happened to me. I changed the oil several days before and checked the sight glass with the bike on a jack and level. Oil level was in between the L-H hash marks. Later that week I did a quick pre-ride inspection and noticed the oil level was high??? I double checked with bike on a level jack. It was high. Since I wanted to change to a different oil on next change, I figured I would do it right then and pay extra attention to the amount of fluid I was adding. All is and has been good.

Not sure how I screwed up that bad, if I did. But if I were you, I would try it again, focusing on the amount, tilting bike from side to side to get as complete drain as you can and making sure your bike is level when adding and checking...

wheel spinner · 10-08-2018, 06:40 PM

pull the dip stick out and smell the oil... if you smell gas on it... gas is mixing... then go ahead and change the oil to Rotella T4 and ride... after about a week... check it again... I fill mine in between lines on the sight glass and also check the stick too... you don't want to over full it... you will blow seals and the oil will come out your by pass hose...

Bruces · 10-08-2018, 07:32 PM

It could be the carbinlet needle is sticking ,or the float as well .

AresROC · 10-08-2018, 11:09 PM

Thanks guys. I pulled the dip stick and it smells a bit of gasoline. I think I will lower the oil level, run the engine until dry, and wait a few days see if oil level goes up again...

Update: I dumped some oil so level is back to "L"ow. Petcock is still closed, and bike wouldn't start. I would think there is some fuel left in the bowl. (I started warm bike before with petcock closed and ran out of fuel on the road once.

) After about 10 tries battery got weak. So I put fuel petcock on and started the bike with a battery charger. After bike started I turned off petcock again and let the engine run the carb dry.

Can fuel in the carb bowl vaporize in a week and end up in the oil? I really don't get it..

It's not like a gravity feed especially with petcock closed.

The oil had some streaks in it again. I really wonder if I need to change oil every ride or at least add a magnet to the oil drain bolt or inside the mesh filter.

wheel spinner · 10-09-2018, 07:46 AM

ok... we know that gas is mixing in your oil... now we need to find where is it getting in at... check your intake manifold .. the seal or gasket behind it... look at where the gas flows through... and go from there looking for cracks... can't be getting in only a few places...

OK.. forget the gas tank and the petcock... the gas is getting in after the carburetor... when the bike is sittimg over night with the petcock on... does the bike start up like always?? or is the carburetor out of gas?? I believe the gas is getting in after the intake... maybe a hair crack in the head or the gasket is not seated in place..... air cooled??? forgot to ask...

2LZ · 10-09-2018, 10:32 AM

Anytime the bike's not running, the petcock should be closed.
If it's not, gravity takes effect. It will eek past the jets and run down into the barrel and past the rings. As they say, "water runs downhill".

wheel spinner · 10-09-2018, 11:15 AM

I have never closed off my petcock.. only during winter months when sitting... I have never had a problem with my gas running through the carb and past the rings.. I still don't shut the petcock off when not riding it for days at a time... and it will start up most of the time the first turn over... never no gas in my oil... no backfires... or sputtering... never to any of my Hondas or my Roketa that I currently own... I know what you are sying about gravity... but if the needle is set right... and the float is set right... then it should shut the gas off from flowing... gravity only pertains to flow to the carb... not through the carb... if flowing through the carb then the bike would always flood out and never run... my petcock has been on for 2 weeks now and I haven't started in that long... but I will today and ride her some... but I know there won't be a problem.. could be a crack or a messed up gasket.. when heated up the crack expands.... same principal as a car.. or even try closing off the petcock... and see if you get gas in the oil.. you probably will... hope not...

Bruces · 10-09-2018, 11:35 AM

Carb inlet needle valves constantly fail ,a little bit of dirt ,a sticky float hinge pin ,is all it takes to have problems .For whatever reason ,I have dealt with more Chinese carbs and these issues ,and mostly in either brand new or very new bikes .Often when opening up these carbs ,I find some metal trash holding open the needle ,or nothing but a stuck float that a simple touch gets moving again .I have had several petcocks leak as well ,once again mainly on the China bikes .Of course as the bike gets older and it’s had some ethanol gas in it ,you will have the green crud growing in the carb as well .

wheel spinner · 10-09-2018, 01:24 PM

Bruce... seeing that you have seen many of these Chinese bikes come with a trash at the needle and float then at this point I would suggest that he should remove the carb and take it apart and give it a good cleaning... but he should know what he is doing before he removes it... or get a buddy to help him .. then let's see what happens afterwards... if he lived close to me I would do it for him... and I know you other guys would too.. but before removing it I would shut the petcock off and leave fuel inside the bowl and see if it starts in a day or more... making sure that the bowl has gas or not in it... my thoughts on a bike with just 60 miles on it...

jimwildman · 10-09-2018, 04:58 PM

Mine had casting material still stuck in the bowl and subsequently the jets.. It's a real issue.

But you state the peacock was closed? Did you wash it? is it water?

If you use a nondetergent oil "and you should", the water will sink to the bottom of the pan rasing the oil level.

A bit of fuel stink in the oil is normal, I mean gas is refined oil right..

Iv'e gotten water into my hawk engine while washing it a few times when it was new, I blame that shitty airbox, or maybey the power washer.

I noticed it while the bike warmed up the window would go white.. drained the oil, found water. New oil too.

Has this happened more than once?

AresROC · 10-09-2018, 06:41 PM

Great suggestions guys!!! I really appreciate the collective knowledge sharing!

I always close the petcock when done riding, but I will need to remove the fuel line to make sure petcock doesn't have a leak.

I have basic understandings of the carb, and wanted to play with one that's part of the reason I got this bike. Have been trying to ride more but I understand working on the bike is part of being a ChinaRider at this point.

A buddy of mine can work on the carb if I mess up. I prefer DIY if I can help it, it's part of the fun.

The factory oil had the correct level, but I changed out that oil after first rides. 2nd oil 10w50 was synthetic and I put in 1 quart, but that oil level quickly went up above the high mark. Currently on 3rd set of oil also synthetic 10w40 but I only put in 7/8 of a quart.

I have not used pressure washer on the bike yet, but I do wash it after every ride. Since water and oil doesn't mix, I checked my old oil and don't see any water in them.

Will report back with my findings soon!

Sochin · 10-09-2018, 11:22 PM

Did you upgrade to a VM 26 Mikuni already, or are you on the stock?

10-08-2018, 04:39 PM	#1
AresROC Join Date: Mar 2018 Location: Las Vegas, NV Posts: 193	Increasing oil level Okay I need help figuring this one out... I think the obvious answer is blow-by but still... Bashan 250 engine has 60 miles on it. I changed the oil morning just before the ride, intentionally leaving the oil level on the "L" low side, filling up less maybe 7/8 of a quart. After riding for an hour, immediately checking the oil level it was in the middle of "L" & "H". Okay not too bad. 1 week later I checked the oil level, and it's now above "High"... so ... Is fuel somehow getting into the crankcase? I left the fuelcock in the off position. Gas was fresh there shouldn't be water in it, and we don't have much humidity here... Is it normal to have a new engine to have that much of a blow by? Everything is stock on this bike... I would think if fuel got into oil they would combust and burn off... __________________ BaShan BSR 250 DB-41H 2018 Red BS250GY-18D JFG Racing Exhaust . Adjustable Shock 320mm . Brozz Digital Gauge . Renthal Fat Bar . 428 17x46 Sprocket . Fender Eliminator . Wheel Truing . Fuel Tank Repair . Keihin PZ30 Main-115 Pilot-38 Needle-1Washer Fuel Mixture-1/2 BSR Chronicles - "Project leads to more projects!" Yamaha WR250R Suzuki GSX-R 600
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10-08-2018, 05:03 PM	#3
AresROC Join Date: Mar 2018 Location: Las Vegas, NV Posts: 193	A week of no riding. The only ride after oil change was for perhaps 10~15 miles. The factory oil and first set of oil had streaks of "stuff" in them, no idea what they are. Bike has plenty of power and I already got Rotella T4 waiting in the garage. __________________ BaShan BSR 250 DB-41H 2018 Red BS250GY-18D JFG Racing Exhaust . Adjustable Shock 320mm . Brozz Digital Gauge . Renthal Fat Bar . 428 17x46 Sprocket . Fender Eliminator . Wheel Truing . Fuel Tank Repair . Keihin PZ30 Main-115 Pilot-38 Needle-1Washer Fuel Mixture-1/2 BSR Chronicles - "Project leads to more projects!" Yamaha WR250R Suzuki GSX-R 600
	0

10-08-2018, 06:40 PM	#5
wheel spinner Join Date: Nov 2017 Location: Suffolk Va. Posts: 146	pull the dip stick out and smell the oil... if you smell gas on it... gas is mixing... then go ahead and change the oil to Rotella T4 and ride... after about a week... check it again... I fill mine in between lines on the sight glass and also check the stick too... you don't want to over full it... you will blow seals and the oil will come out your by pass hose... __________________ 2006 Roketa DB-07-200 Dual Sport 2007 Monte Carlo SS 5.3 2010 Challenger Hemi 5.7 2004 Isuzu Rodeo 1998 Kia Sportage 4x4 2004 Toyota Tundra 2016 Ford Escape Guitars 1970 Gibson SG mint Condition 2005 Epiphone white Custom SG Les Paul L/New Fender Banjo New Condition BC Rich Bitch - Like New\ 3 Jay Turser SG Good Condition Amps Marshall vs100 Good Condition Acoustic 261 very good condition Boss GT-6 Pedal effects Like New
	1

10-08-2018, 11:09 PM	#7
AresROC Join Date: Mar 2018 Location: Las Vegas, NV Posts: 193	Thanks guys. I pulled the dip stick and it smells a bit of gasoline. I think I will lower the oil level, run the engine until dry, and wait a few days see if oil level goes up again... Update: I dumped some oil so level is back to "L"ow. Petcock is still closed, and bike wouldn't start. I would think there is some fuel left in the bowl. (I started warm bike before with petcock closed and ran out of fuel on the road once. ) After about 10 tries battery got weak. So I put fuel petcock on and started the bike with a battery charger. After bike started I turned off petcock again and let the engine run the carb dry. Can fuel in the carb bowl vaporize in a week and end up in the oil? I really don't get it.. It's not like a gravity feed especially with petcock closed. The oil had some streaks in it again. I really wonder if I need to change oil every ride or at least add a magnet to the oil drain bolt or inside the mesh filter. __________________ BaShan BSR 250 DB-41H 2018 Red BS250GY-18D JFG Racing Exhaust . Adjustable Shock 320mm . Brozz Digital Gauge . Renthal Fat Bar . 428 17x46 Sprocket . Fender Eliminator . Wheel Truing . Fuel Tank Repair . Keihin PZ30 Main-115 Pilot-38 Needle-1Washer Fuel Mixture-1/2 BSR Chronicles - "Project leads to more projects!" Yamaha WR250R Suzuki GSX-R 600 Last edited by AresROC; 10-09-2018 at 02:06 AM.
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10-09-2018, 07:46 AM	#8
wheel spinner Join Date: Nov 2017 Location: Suffolk Va. Posts: 146	ok... we know that gas is mixing in your oil... now we need to find where is it getting in at... check your intake manifold .. the seal or gasket behind it... look at where the gas flows through... and go from there looking for cracks... can't be getting in only a few places... OK.. forget the gas tank and the petcock... the gas is getting in after the carburetor... when the bike is sittimg over night with the petcock on... does the bike start up like always?? or is the carburetor out of gas?? I believe the gas is getting in after the intake... maybe a hair crack in the head or the gasket is not seated in place..... air cooled??? forgot to ask... __________________ 2006 Roketa DB-07-200 Dual Sport 2007 Monte Carlo SS 5.3 2010 Challenger Hemi 5.7 2004 Isuzu Rodeo 1998 Kia Sportage 4x4 2004 Toyota Tundra 2016 Ford Escape Guitars 1970 Gibson SG mint Condition 2005 Epiphone white Custom SG Les Paul L/New Fender Banjo New Condition BC Rich Bitch - Like New\ 3 Jay Turser SG Good Condition Amps Marshall vs100 Good Condition Acoustic 261 very good condition Boss GT-6 Pedal effects Like New
	0

10-08-2018, 04:44 PM	#2
llr Join Date: Jun 2018 Location: Dayton OH Posts: 17	A week later with riding it? or just sitting there? How long after a ride of what distance did you check it?
	0

10-08-2018, 06:00 PM	#4
Sclark1013 Join Date: May 2018 Posts: 41	In my experience, if you are getting blow-by, you can really smell the gasoline in the oil and even see a rainbow effect in the oil. A similar thing happened to me. I changed the oil several days before and checked the sight glass with the bike on a jack and level. Oil level was in between the L-H hash marks. Later that week I did a quick pre-ride inspection and noticed the oil level was high??? I double checked with bike on a level jack. It was high. Since I wanted to change to a different oil on next change, I figured I would do it right then and pay extra attention to the amount of fluid I was adding. All is and has been good. Not sure how I screwed up that bad, if I did. But if I were you, I would try it again, focusing on the amount, tilting bike from side to side to get as complete drain as you can and making sure your bike is level when adding and checking...
	1

10-08-2018, 07:32 PM	#6
Bruces Join Date: May 2018 Posts: 1,579	It could be the carbinlet needle is sticking ,or the float as well .
	0

10-09-2018, 10:32 AM	#9
2LZ Join Date: Mar 2010 Location: Volcano, Ca Posts: 7,092	Anytime the bike's not running, the petcock should be closed. If it's not, gravity takes effect. It will eek past the jets and run down into the barrel and past the rings. As they say, "water runs downhill". __________________ "Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350
	0

10-09-2018, 11:15 AM	#10
wheel spinner Join Date: Nov 2017 Location: Suffolk Va. Posts: 146	I have never closed off my petcock.. only during winter months when sitting... I have never had a problem with my gas running through the carb and past the rings.. I still don't shut the petcock off when not riding it for days at a time... and it will start up most of the time the first turn over... never no gas in my oil... no backfires... or sputtering... never to any of my Hondas or my Roketa that I currently own... I know what you are sying about gravity... but if the needle is set right... and the float is set right... then it should shut the gas off from flowing... gravity only pertains to flow to the carb... not through the carb... if flowing through the carb then the bike would always flood out and never run... my petcock has been on for 2 weeks now and I haven't started in that long... but I will today and ride her some... but I know there won't be a problem.. could be a crack or a messed up gasket.. when heated up the crack expands.... same principal as a car.. or even try closing off the petcock... and see if you get gas in the oil.. you probably will... hope not... __________________ 2006 Roketa DB-07-200 Dual Sport 2007 Monte Carlo SS 5.3 2010 Challenger Hemi 5.7 2004 Isuzu Rodeo 1998 Kia Sportage 4x4 2004 Toyota Tundra 2016 Ford Escape Guitars 1970 Gibson SG mint Condition 2005 Epiphone white Custom SG Les Paul L/New Fender Banjo New Condition BC Rich Bitch - Like New\ 3 Jay Turser SG Good Condition Amps Marshall vs100 Good Condition Acoustic 261 very good condition Boss GT-6 Pedal effects Like New
	0

10-09-2018, 11:35 AM	#11
Bruces Join Date: May 2018 Posts: 1,579	Carb inlet needle valves constantly fail ,a little bit of dirt ,a sticky float hinge pin ,is all it takes to have problems .For whatever reason ,I have dealt with more Chinese carbs and these issues ,and mostly in either brand new or very new bikes .Often when opening up these carbs ,I find some metal trash holding open the needle ,or nothing but a stuck float that a simple touch gets moving again .I have had several petcocks leak as well ,once again mainly on the China bikes .Of course as the bike gets older and it’s had some ethanol gas in it ,you will have the green crud growing in the carb as well .
	1

10-09-2018, 01:24 PM	#12
wheel spinner Join Date: Nov 2017 Location: Suffolk Va. Posts: 146	Bruce... seeing that you have seen many of these Chinese bikes come with a trash at the needle and float then at this point I would suggest that he should remove the carb and take it apart and give it a good cleaning... but he should know what he is doing before he removes it... or get a buddy to help him .. then let's see what happens afterwards... if he lived close to me I would do it for him... and I know you other guys would too.. but before removing it I would shut the petcock off and leave fuel inside the bowl and see if it starts in a day or more... making sure that the bowl has gas or not in it... my thoughts on a bike with just 60 miles on it... __________________ 2006 Roketa DB-07-200 Dual Sport 2007 Monte Carlo SS 5.3 2010 Challenger Hemi 5.7 2004 Isuzu Rodeo 1998 Kia Sportage 4x4 2004 Toyota Tundra 2016 Ford Escape Guitars 1970 Gibson SG mint Condition 2005 Epiphone white Custom SG Les Paul L/New Fender Banjo New Condition BC Rich Bitch - Like New\ 3 Jay Turser SG Good Condition Amps Marshall vs100 Good Condition Acoustic 261 very good condition Boss GT-6 Pedal effects Like New
	0

10-09-2018, 04:58 PM	#13
jimwildman Join Date: May 2016 Posts: 237	Mine had casting material still stuck in the bowl and subsequently the jets.. It's a real issue. But you state the peacock was closed? Did you wash it? is it water? If you use a nondetergent oil "and you should", the water will sink to the bottom of the pan rasing the oil level. A bit of fuel stink in the oil is normal, I mean gas is refined oil right.. Iv'e gotten water into my hawk engine while washing it a few times when it was new, I blame that shitty airbox, or maybey the power washer. I noticed it while the bike warmed up the window would go white.. drained the oil, found water. New oil too. Has this happened more than once?
	0

10-09-2018, 06:41 PM	#14
AresROC Join Date: Mar 2018 Location: Las Vegas, NV Posts: 193	Great suggestions guys!!! I really appreciate the collective knowledge sharing! I always close the petcock when done riding, but I will need to remove the fuel line to make sure petcock doesn't have a leak. I have basic understandings of the carb, and wanted to play with one that's part of the reason I got this bike. Have been trying to ride more but I understand working on the bike is part of being a ChinaRider at this point. A buddy of mine can work on the carb if I mess up. I prefer DIY if I can help it, it's part of the fun. The factory oil had the correct level, but I changed out that oil after first rides. 2nd oil 10w50 was synthetic and I put in 1 quart, but that oil level quickly went up above the high mark. Currently on 3rd set of oil also synthetic 10w40 but I only put in 7/8 of a quart. I have not used pressure washer on the bike yet, but I do wash it after every ride. Since water and oil doesn't mix, I checked my old oil and don't see any water in them. Will report back with my findings soon! __________________ BaShan BSR 250 DB-41H 2018 Red BS250GY-18D JFG Racing Exhaust . Adjustable Shock 320mm . Brozz Digital Gauge . Renthal Fat Bar . 428 17x46 Sprocket . Fender Eliminator . Wheel Truing . Fuel Tank Repair . Keihin PZ30 Main-115 Pilot-38 Needle-1Washer Fuel Mixture-1/2 BSR Chronicles - "Project leads to more projects!" Yamaha WR250R Suzuki GSX-R 600
	0

10-09-2018, 11:22 PM	#15
Sochin Join Date: Jul 2017 Location: Montucky Posts: 209	Did you upgrade to a VM 26 Mikuni already, or are you on the stock? __________________ 1991 Kawasaki KLR250
	0