10-10-2018, 12:55 AM | #16 |
Join Date: Jan 2012
Location: ChCh , NZ
Posts: 2,265
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if theres no water or fuel in the oil...
the level is between the makes... ride it the sight glass and dip stick make it look a lot worse than it is... you would have something to worry about if the level was droping... ..
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10-10-2018, 07:06 PM | #17 |
Join Date: Mar 2018
Location: Las Vegas, NV
Posts: 193
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Engine is air cooled.
Carb is stock Keihin "Technology From Japan" PZ30/PD Oil level went from Low mark to way above High mark on sight glass in 1 ride. Two days, fuel cock closed, dry carb, and no oil level increase.
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10-10-2018, 07:57 PM | #18 |
Join Date: Jul 2018
Posts: 212
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Best case scenario is a poorly adjusted or defective carb allowing too much gas into the engine...this would cause gas to flow down the cylinder walls and collect in the oil reservoir, raising your oil level gradually (only when the engine is running...which seems to be happening in your case). Worst case is a crack or gasket leak in the intake area of the engine.
Replace the carb with a Mikuni VM26 and see if that solves your problem. A new VM26 will run you $40 or so and can be found on Amazon. Good first option to narrow down your issue without breaking the bank or taking up hours of your time, or weeks to receive a new carb. If you still see the same problem with a new carb, then I would definitely start to suspect the engine itself as the issue. Leaving the petcock on should not cause the issue you're having - there's nothing pulling the fuel through the jets in the carburetor when the engine isn't running, so unless there's another problem (or a leak) in your carb, an open petcock while the engine is off shouldn't flood the engine or allow fuel to run down into your oil. I leave mine on all the time and there's never an extra drop of fuel inside the carb. Engine starts reliably every time. For those washing your "CHonda's" regularly...avoid pressure washers. A garden hose and some car wash soap should be all you need. Pressure washers can cause water to penetrate through seals and can destroy wires, hoses, and anything that is delicate around the engine. Don't spray water into the airbox area as this may throw water into your carb and cause some serious issues down the road. If you must use a pressure washer, avoid spraying anywhere near the middle of the bike, the engine, or inside the frame - limit it to wheels/chain area only.
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10-18-2018, 07:32 PM | #19 |
Join Date: Mar 2018
Location: Las Vegas, NV
Posts: 193
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It's been a week of no riding, fuel cock on, and no rising oil level.
I turned over the engine a few times, let it idle a bit. Don't think it's a carb issue at this point. I have to ride it a bit to find out. A friend told me the correct way to check oil level is to crank the engine a few times, then check the level. Is that how most check their oil level? I just don't see how oil can go from low to higher than high.
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10-19-2018, 07:14 AM | #20 |
Join Date: Nov 2017
Location: Suffolk Va.
Posts: 146
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Think of what could be making the oil level higher... you have no radiator.. so that eliminates antifreeze and water... so what else do we have here??? oil and gas... you stated you put the correct amount of oil in... ok.. just on a note here... do not drain a small part of the oil because if gas is getting in the oil... you will have a diluted amount of oil and more gas then.. Boom.. or mess you motor up... you should never smell gas in your oil.. !!!
when you ride the bike?? does it ride good?? I never blame carbs on everything that happens to any motor.. but like I said previously.. I believe you have a float adjustment problem here... do you have a spare carb?? put it on and see what happens... if it does the same thing you have a gasket problem or a crack... simple as that..
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11-30-2018, 07:10 PM | #21 |
Join Date: Mar 2018
Location: Las Vegas, NV
Posts: 193
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Update
So I left the fuel petcock on for several weeks, and observed the oil level regularly (without riding). No increase, still at the low line.
I added some new oil to bring the oil level to the middle level. Took the carb apart, put in new main jet (from Keihin 105 to 115). Then I took the bike out for a ride to test top speed of new jet. Came back after the short ride, and noticed much higher oil level. A week later I took the bike out for hours of desert ride, including 55mph runs on the road (the top speed I can get currently with stock front 17, rear 46 sprockets). Oil level stayed above high without much increase. So, I will continue to ride the bike as is, and be one of the people who don't break-in their engine gently, and see what happens. I will change oil to Rotella T4 soon and report back if the bike behaves differently... Possible causes for oil level increase:
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11-30-2018, 08:27 PM | #22 | |
Join Date: Nov 2016
Location: robertsdale alabama usa
Posts: 1,007
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Quote:
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11-30-2018, 10:35 PM | #23 |
Join Date: Apr 2018
Posts: 819
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With the bike sitting level without being ran that day stand it up straight and glance down at the window, whatever the oil level is at that moment is what you have cold. Ride it for 30-60 minutes then hop off, wait 5 minutes for it to settle and check it the same way, that's what you have for hot level. Every car I ever owned had a cold mark and a separate hot mark on the dipstick. As long as your hot level is within the safe ranges on your glass you're good to go. Temperature changes things a lot.
You could always just do an oil change and start over. Replace the old oil by adding only and exactly 1 quart. If you need to add a little more then just add 1/2 a cups worth at a time and see each time where that puts you cold and hot. |
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11-30-2018, 10:48 PM | #24 |
Join Date: Jun 2016
Location: Hell
Posts: 2,408
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If the carb/float was leaking it will over flow from the carb as there is a drain.
I kinda wonder if you actually don't have an issue but are seeing the normal warm/hot oil wrong or seeing the sight glass as if it a lot more yet only a little hot oil expansion? Maybe photos would be better and of course check oil with bike standing upright and not on the stand. cold and normal pic and compare to high oil level. You wont be getting loads of fuel via blow by - then your motor would run very poorly and smoke I would think, that would be some serious wear in the motor. Just my thoughts based on general mechanical knowledge. |
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06-26-2019, 01:33 PM | #25 |
Join Date: Mar 2018
Location: Las Vegas, NV
Posts: 193
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Rotella T4 is IN!
Changed oil to Rotella T4 --- And --- No more increasing oil level!
Took the bike for a long ride to Pioneer Saloon at Good Springs, Nevada. Used ~3/4 of the tank of gas. Possible causes for oil level increase:
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06-26-2019, 02:18 PM | #26 |
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Maybe you got a hold of some experimental self rejuvenating oil that multiplied as it got hot. lol Glad to see it worked out for you.
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06-26-2019, 02:29 PM | #27 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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Oil trapped in areas of the motor and transmission. Honda in particular states the way to check the oil level on their new bikes is to run it for 3-5 minutes, shut it off, let it sit for a 2-3 minutes, and then check it. If the oil is within the high and low marks on the sight glass after this procedure they consider that the proper oil level. Let the bike sit for a couple of days and check it without running the motor the level is almost always too high.
This is the same reason the oil capacity for these motors is stated at 1.5(ish) quarts, but most oil changes barely take 1, or a hair over 1.
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06-27-2019, 09:08 AM | #28 |
Join Date: May 2019
Location: Port Huron, Michigan
Posts: 637
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Hot and cold levels will never be the same, and like Dan said, the longer it sits the more oil will collect in the sump. If you level is coming up that much on fuel alone it should be the consistency of water and reak of gas just not a hint.
I've had my storm on a motorcycle jack the last week with the front wheel off, the the oil level went from its just below high to a full sight glass as all the oil slow seeps to the sump.
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