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Old 08-26-2013, 05:42 PM   #1
adrenalin-junkie OP
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Need advice on oil light staying on .

I am in Moab , and did the poison spider trail in Moab . On my way returning to Moab after doing some trails. My oil light stayed on after starting up and riding . My oil is due for a cgange .
I have about 4000 miles since my change , and my oil level is fine .

Now , my thought us , that maybe I hit the bashplate a few times PRETTY hard . My sidestand is ok . Nothing damaged in that area . Is there 'm aybe someting else that could cause the oil light to stay on ? We are supposed to do White Rim trail tomorrow .

So any advice will be appreciated . thanks .
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Old 08-26-2013, 06:04 PM   #2
Orangecicle
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Check the oil lines that run under the motor. If they've been smashed, you need to patch that or you will starve the motor of oil. Bad to do.

Also, pull the oil filter and see if it's plugged. If it is, you can pull the filter and run without it for a short time. Not really advisable, but if you have to . . . .
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Old 08-26-2013, 06:07 PM   #3
Goss
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Oil light could mean your water pump seal has caused water to migrate into the oil.

If you have the stock oil filter pull it and see if it is wavy. Water makes it swell and the pleats will become wavy. The swelling makes it tougher for the oil to get through which can cause the oil light to come on. This will at least tell you if the water pump seal is a possible cause.
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Old 08-26-2013, 06:09 PM   #4
gearheadE30
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Whatever you do, don't run the bike with the light on. That light is calibrated for a rather low oil pressure as it is for reference at idle. Oil pressure rises somewhat with RPM, but the level that the light triggers at is fixed, so if the light is on and you are above idle, that's especially bad. Sounds like a possible fried pressure regulator or a crimped line somewhere. You would probably be able to hear it if the pump itself had failed.
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Old 08-26-2013, 06:23 PM   #5
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Question I have the belly pan off.

I have the bellypan off . And the oil lines to the motor looks good . Nothing smashed , also no oil in the bellypan .

So , can I remove my oil filter without spilling oil all over the parking area . Another thing is , that I have modified my waterpump with the new improved CJ kit .So I am assuming it is not the water pump. The oil looks good . I ran my bije fir about 4 miles from the trail into town , but at 40 mph . Bike starts up fine , but oil light does not flicker . It just stays on .

Anymore advice ?
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Old 08-26-2013, 06:57 PM   #6
Orangecicle
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Quote:
Originally Posted by adrenalin-junkie View Post
I have the bellypan off . And the oil lines to the motor looks good . Nothing smashed , also no oil in the bellypan .

So , can I remove my oil filter without spilling oil all over the parking area . Another thing is , that I have modified my waterpump with the new improved CJ kit .So I am assuming it is not the water pump. The oil looks good . I ran my bije fir about 4 miles from the trail into town , but at 40 mph . Bike starts up fine , but oil light does not flicker . It just stays on .

Anymore advice ?
Very little oil should come out of the filter. Tilt the bike to the right, and none should come out.
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Old 08-26-2013, 07:14 PM   #7
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If your oil pressure switch comes unhooked the light will stay on. I'm just sayin'. i live by the KISS principle!
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Old 08-26-2013, 07:26 PM   #8
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I know this sounds simple, but happened to me after I had the air box off. Check the wire going to the oil pressure switch. My connector came loose giving a false oil pressure light. It is located on the rear left side of the front cylinder. Single wire with a blade terminal. Good luck.
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Old 08-26-2013, 08:26 PM   #9
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Thanks everyone

I decided to give it a rest , and maybe have a look tomorrow . We have a spare bike with us .So we are doing White Rim Trail . I will be using an Xr650 .

But I do think it is an oil pressure switch wire that came undone . Once agsin , thanks for the geads up .
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Old 08-27-2013, 05:54 AM   #10
OlivierS
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I had the same problem last week in Spain... Oil light stayed on, engine was running ok, there was plenty of oil in the engine. Turned out to be a small leak and a faulty oil pressure sensor.
Had it fixed for 55 euro's.
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Old 08-27-2013, 08:27 AM   #11
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I also had the oil light stay on due to electrical or sensor issues.
It started after I checked my valves, so it meant that I had a bunch of the electrical wires moved in that procedure.

I ended up taking the sensor out, cleaning it and reassembling. That fixed it but not sure if it was an electrical connection or actually a sensor issue.

I also have had experienced oil starvation due to a clogged filter and that manifests it self in noisy cam chain at idle.
Also the light flickers more so than simply staying on.

Quick test to see if the oil filter is clogging is to, lay bike on side, pull out oil filter, and run it without the filter to see if you notice any change.
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Old 08-27-2013, 09:18 AM   #12
nmdave7
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As a note if your engine wasn't making horrific noise, particularly the top end it's probably a sensor/connection issue.
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Old 08-27-2013, 02:53 PM   #13
jas123
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Quote:
Originally Posted by Bumpaman View Post
If your oil pressure switch comes unhooked the light will stay on. I'm just sayin'. i live by the KISS principle!
Are you sure this is correct ? On my Superduke when disconnected , the light goes off.
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Old 08-27-2013, 11:00 PM   #14
Head2Wind
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mmmmm the pressure switch is a "Normally Closed" switch. Meaning that IF below the low threshold pressure it will "close" and complete the circuit from the center post to the body of the switch. In the application as install on the LC8, this completes the NEG side of the oil light to the engine and in effect the NEG terminal of the battery.... current flows through and the light illuminates. When the oil pressure comes up to the point where it exceeds the threshold of the switch, it opens the circuit and the oil light turns off.

So.... there are several ways that the light can stay on, the wire that plugs into the switch has worn through the insulation and has become 'grounded'..... OR the oil pressure switch is staying in a "Normally Closed" position independent of the applied pressure.

If there is no oil pressure, the cam chains will be clattering like crazy, it will be very loud.
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