Tartanpimpernel
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posted on 7/8/17 at 01:22 PM |
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Oil Mystery
I'm hoping someone might be able to solve the mystery as to why my sc33 cbr900 engine doesnt ever appear to have an oil level on the dip
stick.
engine is installed in a westfield megablade.
I keep getting an oil pressure warning light appear briefly when braking or going around a roundabout.
Even after a long run out to warm everything thoroughly there is barely any oil on the lowest mark on the short dip stick.
Even after topping up a small amount of oil before or after each run out and its the same each time, in total in the last 4 months the engine has had
5L of oil in total.
Yet there is none on my garage floor or where i park the car up before and after each drive, i've looked for any cracks or splits to the sump,
signs of a leak.... but nothing?
Any suggestions greatfully received.
TIA
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Nathsx
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posted on 7/8/17 at 01:29 PM |
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Perhaps something is stopping it draining from the head back down to the sump?
Id be worried about the oil light being on does it have a baffle in the sump?
Are you getting blue smoke out the exhaust ?
[Edited on 7/8/17 by Nathsx]
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Tartanpimpernel
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posted on 7/8/17 at 02:05 PM |
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The OP warning light comes on for a second then off again, its obviously oil movement related so there's a lack of oil or too much movement of
oil.
Has only been an issue for last few months, never had this issue before and nothing in the set up has changed
Car was sold with apparently a baffled sump.
Where i store the car i dont have the space to pull the sump off and take a look, so thinking I'll order up all new seals and gaskets and have a
garage confirm if the sump is baffled or not....
No blue smoke, car runs as it always has
[Edited on 7/8/17 by Tartanpimpernel]
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Nathsx
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posted on 7/8/17 at 02:57 PM |
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quote: Originally posted by Tartanpimpernel
The OP warning light comes on for a second then off again, its obviously oil movement related so there's a lack of oil or too much movement of
oil.
Has only been an issue for last few months, never had this issue before and nothing in the set up has changed
Car was sold with apparently a baffled sump.
Where i store the car i dont have the space to pull the sump off and take a look, so thinking I'll order up all new seals and gaskets and have a
garage confirm if the sump is baffled or not....
No blue smoke, car runs as it always has
[Edited on 7/8/17 by Tartanpimpernel]
Was the car serviced in the past few months? perhaps the oil is to thin ?
Just a thought
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snapper
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posted on 7/8/17 at 03:45 PM |
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Red light means low oil pressure which may be a direct result of low oil in the sump, the mystery is where is it going if you are topping it up.
Drain it, fill it up with correct quantity, check levels
I agree with earlier post, is it filling the top half of the engine or leaking out to another part.
Check water for oil
Check oil cooler
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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Tartanpimpernel
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posted on 10/8/17 at 03:58 PM |
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thanks for the replies all,
always ran the car on silkolene comp4 10w40 as previous owner did
checked the water and oil cooler, nothing untowards there.
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Tartanpimpernel
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posted on 10/8/17 at 04:29 PM |
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Now its vaguely sunny, just jacked the car up and got a camera underneath to try and snap some pics
seems sump is ok
but since I last checked it looks like I'm losing oil through a seal ( strangely nothing has ever dripped onto the garage floor )
time to order a new seal & gasket set from Honda
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nick205
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posted on 11/8/17 at 09:21 AM |
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Is the leaking oil burning off as the engine warms?
Neighbours MX5 was weeping oil from a failed rocker cover gasket. The weeping oil was running down the outside of the cylinder head and burning off
on the exhaust manifold. So no visible oil marks beneath the car.
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nick205
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posted on 11/8/17 at 10:51 AM |
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Thinking further the oil low pressure light coming on under braking and on roundabouts sounds like oil is slopping around in the sump.
As mentioned above, should the sump itself have a baffle of some kind to prevent this?
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owelly
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posted on 11/8/17 at 11:23 AM |
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Are there any breathers? It could be a build up of crankcase pressure which is forcing the oil out of the seal when you're out blatting but not
when trundling home or sat on tickover?
http://www.ppcmag.co.uk
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Tartanpimpernel
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posted on 11/8/17 at 11:46 AM |
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Good idea, ive a catch can which is empty, but will check the pipework to see if there's any restrictions
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coozer
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posted on 11/8/17 at 01:36 PM |
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Many years ago I had a Kawasaki Z1000 that used 1l of oil every 500 miles. No leaks or smoke to be seen. Might have running out the back when I stood
it up on it's back wheel
1972 V8 Jago
1980 Z750
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Tartanpimpernel
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posted on 11/8/17 at 03:29 PM |
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Tartanpimpernel
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posted on 15/8/17 at 08:50 AM |
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Well cleaned the oil up from the above pic and went out for a run, checked when i got back and same oil leakage, so will see if Honda sell the seal i
need or if its part of a 'pack' only.
Could be its not the main cause but good to rule it out....
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Nathsx
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posted on 15/8/17 at 09:39 AM |
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quote: Originally posted by Tartanpimpernel
Well cleaned the oil up from the above pic and went out for a run, checked when i got back and same oil leakage, so will see if Honda sell the seal i
need or if its part of a 'pack' only.
Could be its not the main cause but good to rule it out....
Worth fixing anyway!, May only be leaking as oil pressure increases
The oil level one is still a strange one..
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Tartanpimpernel
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posted on 15/8/17 at 11:39 AM |
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Hopefully cant hurt !
Anyone know how much of a job it is ?
Oil level is definitely odd, hoping a drain and start from scratch refill with recommended amount of oil will give me a level on the dipstick and or
let me see how much I'm missing/losing..
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CosKev3
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posted on 15/8/17 at 01:35 PM |
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Does the engine sit at the same level in the car as it does in the bike?
If not there is a good chance the dips tick won't be showing the true level .
Also once a bike engine is fitted to a car without a dry sump system most need to run a overfill on the engine oil,are you sure this is what you are
not missing?
As above bike engines do tend to use oil without showing smoke out of the exhaust, Yamahas like my R1 engine use quite a lot!
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Tartanpimpernel
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posted on 15/8/17 at 06:12 PM |
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trouble is I dont know what amount of oil is in the engine currently
so a full drain and refill will let me get it to the correct amount and then the overfill I've seen recommended on here
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CosKev3
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posted on 15/8/17 at 07:49 PM |
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You can run upto a ltr overfill on a R1 without causing issue's.
Overfilling will never be as risky as driving it with the low pressure light coming on anyway!
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ReMan
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posted on 15/8/17 at 09:23 PM |
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Leaks or not you need it to be higher than the low mark on the dipstick to be anywhere near enough
That should stop the light coming on after a top up?
If not then you have a bigger problem
Where its going is either on the floor or burning. But 5L is a lot to burn unlwss the engine is knackered, so the leak might be worse that it seems
www.plusnine.co.uk
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