You could always try hooking up a manual pressure gauge. Sent via BlackBerry by AT&T
-----Original Message----- From: "Mt.-n-Man Chia Bar" <[email protected]> Sender: [email protected] Date: Sun, 19 Jun 2011 10:47:36 To: Nighthawk Motorcycle Lovers!<[email protected]> Reply-To: [email protected] Subject: [Nighthawk Lovers] Re: oil light stays on I am stumped Thankjs for the links James. I forgot to tell you that this is my first bike ever. I have never ridden before. I never run this bike more than about 10 sec to do any tests because the oil pressure warning indicator light stays on. I will not run it until is seases. I can not afford to lose an engine at this point. I have had the bike for 4 months and have not ridden her yet. First I started replacing parts and cleaning the carbs as needed. I sined up for and took a riding course and passed with no errors on both the written and the ridding tests. By that time I was just finishing putting the motor in (bad bearing in first motor) while waiting for more parts. Then I got the parts got her all back together and the oil warning indicator light came on after runing for about 1 min. As the FSM states "check that the oil pressure warning indacator should go out after one or two seconds. If the oil pressure warning indicator stays on, STOP the engine immediately and determine the cause." Although it does not say what to check to determine the cause. When I did the wire check the light stays on when it is connected when it is not conneted and when it is grounded. I will take the valve cover off later tonight to see if oil is flowing. I will let the group know wjhat happens by Monday. thank you again for any help On Jun 18, 10:40 pm, James O'Gorman <[email protected]> wrote: > You could tell people that the light is the 'has oil' light instead of 'no > oil pressure' ;) > > I believe that an oil pressure sending unit functions the same as a fuel > sending unit - a different reading will result in different resistance to > ground. The gauge (or idiot light) reads this resistance and displays a > corresponding value. > > You should be able to test a few things - try unhooking the wire from the > sending unit and grounding it to see what happens with the light. This should > work with the key in, engine off. > > Here is a write up I found about one type of oil pressure sending unit > (3-wire):http://www.racepak.com/forums/viewtopic.php?f=2&t=801 > > Here is a quick write up about a one-wire sending > unit:http://www.rx7club.com/showthread.php?t=746600 > > Once you know what type you've got, you should be able to 'bench' test each > component separately. > > It sounds like you've already done a lot of work on this. There is always a > chance the 'new' sending unit is bad, or that a wire is grounded out causing > the light to think zero pressure, but it may also be a blocked oil passage in > the block. > > Soo... you're sure that the oil is flowing, right? I'd imagine you'd know > within about five minutes if the motor stops running. You should be able to > run it with the valve cover off, and see the oil flow. (although your bike > may be different than my 350). > > Good luck and keep us updated! > > - JO > > On Jun 18, 2011, at 10:01 PM, Mt.-n-Man Chia Bar wrote: > > > > > I have also put in a new filter and now have checked the wires and > > they are fine. what is next?????????? > > > On Jun 18, 8:07 pm, "Mt.-n-Man Chia Bar" <[email protected]> wrote: > >> Hi, > > >> I am new to this club. I have a 85 cb700sc. I had a bad bearing so i > >> found a parts bike that ran with no problems. I put the motor in the > >> registered bike and after runing for about a min. the oil light came > >> on. I thought that it might be the oil sending unit chaged it then > >> maybe the pump changed it, changed the pick up filter and the presure > >> relief valve. > > >> I still have the oil presure light on after all that work any > >> suggestion as to what to do next? Could it be the wire from the oil > >> sending unit? Or the filter which is new? > > >> Thank you bfor your help > > >> Brian > > > -- > > You received this message because you are subscribed to the Google Groups > > "Nighthawk Motorcycle Lovers!" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > [email protected]. > > For more options, visit this group > > athttp://groups.google.com/group/nighthawk_lovers?hl=en.- Hide quoted text - > > - Show quoted text - -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en. -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en.
