chunky2772
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| posted on 23/9/10 at 06:08 PM |
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low oil pressure on bec?
help please my clocks on my 2008 gsxr 1000 are reading low oil pressure what could be the cause of this? has anyone had the same problem ive choped
the sump down and put some baffels in so its useing the original sump. also how quick does the pump drain oil from the sump when the engine is at idle
speed. the oil light stays on even at idle speed.
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twybrow
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| posted on 23/9/10 at 06:22 PM |
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Oil light shouldn't be on, but most bike engines run very low pressure at idle. It should rise to a more typical pressure as the revs rise
(somewhere around 40psi at 5000rpm at normal temperature).
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big_l
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| posted on 23/9/10 at 06:23 PM |
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Not sure about the cause but it's usueally Game over when the light comes on !!!
Check out my blog  mnrvortxhayabusa@blogspot.com
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neo2
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| posted on 23/9/10 at 06:44 PM |
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I can echo TWYBROW's comment ive a gsxr 1000 indy and although the oil light never comes on the oil pressure guage is a racetec std car engine
type guage and that sits on the upper edge of red at idle and raises up to 40/50psi with 5k or more revs, i was a little concerned of how low at idle
i had although light dont come on at all....
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Davey D
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| posted on 23/9/10 at 06:46 PM |
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Is it definately oil pressure, and not oil level like the yamaha engines have?
on my R1 engine the oil light comes on for a few minutes at startup until it is warm, and briefly while going for a thrash. it is a known issue on the
yamaha bikes though for the light to come on when everything is ok
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chunky2772
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| posted on 23/9/10 at 06:53 PM |
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even when i take engine revs up quite high light still stay on the light never turns out its realy got me worried now as this is a new build and
engine only has 1,500 miles on it and i dont want to destroy it before i even get it on the road.
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chunky2772
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| posted on 23/9/10 at 06:56 PM |
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yes its oil pressure for def oil level has a little oil symbol that comes on!
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cosmick
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| posted on 23/9/10 at 07:12 PM |
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Hi Chunky,
What have you done? First thing to do is turn the ignition on without running the engine and disconnect the wire from the oil pressure switch. if the
light goes out, then the wiring is ok. if it stays on then you have a trapped wire which is shorting out to earth somewhere.
I thought that you had run this engine for a while with no ill effect.
I sent you my email address, if you want to speak to me, email your telephone number and we can talk.
If it can't be fixed with a hammer then its probably an electrical problem.
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chunky2772
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| posted on 23/9/10 at 07:30 PM |
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hello cosmick ive only pluged the 120hm resistor in today and i thought this was causeing the oil pressure light to stay on sd on the clocks has now
dissapeared after pluging the resistor in. ( i dont like to hastle people so i dident want to keep asking you loads of questions) but if you dont
mind your help would be realy appreciated (by the way ive sent your heatshrink today. im gona try that now!
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Andy B
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| posted on 23/9/10 at 07:32 PM |
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I would get a pressure guage hooked up even if only temporary. If it really is low oil pressure and not a fault do not run the motor again until you
have pulled the bottom end down. Once the shell material has worn away and the hard steel of the rod has smacked the crank a few times the crank will
be toast. As it is it might just need reshelling.
Just a thought - we had one do this a few years ago and all it was down to was a small fragment of silicon sealant blocking the oil way into the
sender, might be worth removing the switch and checking
best regards
Andy
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Moorron
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| posted on 23/9/10 at 07:56 PM |
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if you have removed the sump and pickup to cut it down and left it off for over 5 hours all the oil will drain, i mean every drop and when you refit
it all and start it up u can sometimes get an air lock. so you have NO OIL running around the engine =  if you have been revving it.
get the rocker cover off, unplug the coils or injectors and run the starter over, there should be oil spraying the cams. if not then its an air lock.
failing that do what the others have said and get a gauge fitted ASAP and see if its showing any pressure.
I wouldnt start it up again without doing the above, you risk even more damage to the engine if there is indeed no pressure.
To remove air lock crank the engine over with the injectors unplugged to stop it starting and undo the oil filter, it has to be loose and you will see
it 'burping' until a good flow of oil is escaping around it then do back up and crank engine again to see if the light goes out or u get
pressure.
google 'burping oil filter' and the like and you will find many people suffer from it.
Lets hope it this AND you have got lucky and not damamged the engine.
Sorry about my spelling, im an engineer and only work in numbers.
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chunky2772
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| posted on 23/9/10 at 08:43 PM |
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ive just unpluged the oil pressure switch lead and turned key to on possition and oil pressure light stayed on then ive just traced the wire back to
the clocks and there is no brake or earth in the wire! any ideas now?
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cosmick
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| posted on 23/9/10 at 08:55 PM |
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Chunky,
You have an email
If it can't be fixed with a hammer then its probably an electrical problem.
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neo2
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| posted on 23/9/10 at 09:26 PM |
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Just a daft option you aint got the same clocks as me have you mines a 2003 Gsxr clock set and the red light next the the 14k red line does more than
the oil pressure ?
Its also the FI warning light for fault codes and regulary comes on and stays on with exhaust valve removal mods and stuff, have a look on
www.gsxr.com and search for FI light stuff, as my car regualary puts that light on but i can flick a switch to clear it, as its something to do with
mine having no evac exhaust jobby..
Just a thought, think it also does temp warning light as well not 100% sure though.
[Edited on 23/9/10 by neo2]
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chunky2772
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| posted on 23/9/10 at 09:38 PM |
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yes mate your right! ive just been told this of someone on here and he realy knows what he,s talking about hes told me the exact same thing the light
is more than just oil pressure he also told me how to check the oil pressure switch without running it through the harness. thanks for that reply
though.
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Hellfire
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| posted on 24/9/10 at 11:05 AM |
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All (correct or opinionated) advice is helpful - posting messages that may benefit us all shouldn't really be kept off the forum should they?
Surely that's what forums are for, isn't it?
The ZX12 Engine idles with only 5psi indicated..
Steve
[Edited on 24-9-10 by Hellfire]
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40inches
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| posted on 24/9/10 at 01:57 PM |
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quote:
Originally posted by Hellfire
All (correct or opinionated) advice is helpful - posting messages that may benefit us all shouldn't really be kept off the forum should they?
Surely that's what forums are for, isn't it?
The ZX12 Engine idles with only 5psi indicated..
Steve
[Edited on 24-9-10 by Hellfire]
I agree! Interesting/informative threads that are terminated by U2U or email are not in the intended spirit of this forum, unless they compromise
national security 
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chunky2772
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| posted on 24/9/10 at 06:50 PM |
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sorry lads. ill share my problem it turned out that it was not low oil pressure. it was electrical the oil pressure light is also fi failure and this
will light if there are any problems with fi when starting the engine it turned out it was the servo motor to the exhaust so all you do is cut the b/w
earth coming from the ecu to the servo motor. ive got to say cosmick knows his stuff and i give him 11out of 10 for the knowlege he has he only told
me to ring him so we could get this problem sorted quickly as you have better communication by phone
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chunky2772
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| posted on 24/9/10 at 06:54 PM |
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sorry lads. ill share my problem it turned out that it was not low oil pressure. it was electrical the oil pressure light is also fi failure and this
will light if there are any problems with fi when starting the engine it turned out it was the servo motor to the exhaust so all you do is cut the b/w
earth coming from the ecu to the servo motor. ive got to say cosmick knows his stuff and i give him 11out of 10 for the knowlege he has he only told
me to ring him so we could get this problem sorted quickly as you have better communication by phone
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40inches
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| posted on 24/9/10 at 08:06 PM |
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That's ok chunky, you only have to apologise once
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chunky2772
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| posted on 24/9/10 at 08:10 PM |
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sorry mate i have a sticky finger (and no i havent been doing anything dirty ha,ha,)
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neo2
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| posted on 24/9/10 at 09:00 PM |
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Just to add to this post my MK factory built car does show the FI light also but MK fitted a flick switch near the ECU and when i flick the switch the
light goes off and an error code appears in the LCD display its always the same one which is C46 i think thats the servo one as well, not sure
though...
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cosmick
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| posted on 25/9/10 at 07:32 AM |
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neo2,
C46 is the Ex Valve which you are probably not using. There is a way of disabling the system so that it doesn't look for the valve everytime you
turn the ignition on. this is so that full race exhaust systems can be fitted without the valve.
If your engine is a K3, you need to disconnect pin number 33 from the ECU. It is a Black/Brown coloured wire and is in the larger of the 2 connectors
in the ECU , bottom row 2nd in from the right.
If it can't be fixed with a hammer then its probably an electrical problem.
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neo2
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| posted on 25/9/10 at 08:48 AM |
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Thanks Cosmick, im not sure it might be a K1 or K2 how can you tell do you know..
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chunky2772
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| posted on 25/9/10 at 11:49 AM |
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neo2! mine showed c46 to it is the servo motor but as cosmick says yours will be a different colour wire as your engine is earlyer than mine im sure
cosmick will talk you through through exactly what to do if you have any problems as he,s a realy helpfull bloke. it saves the clart on with keep
flicking that switch everytime you start your engine. best of luck from mick!
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