Question about 2000 kawasaki GPZ 500 S - GPX 500 R

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Started engine oil lamp failed to go out. Removed switch and fitted gauge to test but no pressure. Do these oil pumps or drives fail suddenly?

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Not as a rule. Oil pumps are reliable - they are well lubricated. However, they will fail for one reason or another. Take your Kawasaki Motorcycle to your dealer for proper replacement and adjustment of your oil pump. Get your Spring tune up while you are there. You will enjoy a trouble-free riding season as the result of your investment.

Thanks for your question @

Posted on Mar 13, 2011

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I'm afraid anything is possible. Certainly the drive can fail. There's no way the oil could have leaked out?

Posted on Mar 13, 2011


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Posted on Jan 02, 2017

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Where is the oil sending unit on a 1996 mercury cougar xr7 ? Its cause my oil pressure gauge is bouncing up and down...i dont know why...can anybody please help me thank you so much

The low oil pressure warning lamp will illuminate anytime the ignition switch is turned to the ON position without the engine running. When the engine is running, the light also illuminates if the engine oil pressure drops below a safe oil pressure level. To test the system, perform the following:
If the oil pressure light does not work, perform the following:
  1. Turn the ignition switch to the ON position.
  2. If the lamp does not light, check for a broken or disconnected wire around the engine and oil pressure sending unit switch.
  3. If the wire at the connector checks out OK, pull the connector loose from the switch and, with a jumper wire, ground the connector to the engine.
  4. With the ignition switch turned to the ON position, check the warning lamp. If the lamp lights, make sure the oil pressure switch is properly grounded in the cylinder block, and if so replace the oil pressure switch. If the lamp still fails to light, check for a burned out lamp or disconnected socket in the instrument cluster.
To diagnose an oil pressure light that stays on, perform the following:
  1. Check the engine oil level and top off as necessary. If the engine was 2 or more quarts low on oil, test start the engine after topping off the oil level and recheck the oil pressure light operation. If the light stays on, stop the engine immediately and go to the next step.
  2. Disconnect the wire at the sending unit, then turn the ignition switch to theON position. If the light remains on, check the wire from the sending unit to the gauge for being shorted to ground and repair as necessary. If the light goes out, turn the ignition switch OFF and go to the next step.
  3. Replace the oil pressure sending switch with a known good switch.
  4. Start the engine and check the oil pressure light operation. If the light stays on with the engine running, stop the engine immediately to avoid severe engine damage until the cause of the problem can be determined.

If the oil pressure light remains on while the engine is started, stop the engine immediately. Do not operate the engine until the cause of the problem can be determined. Operating an engine with low oil pressure will cause severe internal damage.

Possible causes for an oil pressure light to stay on are:

Pinched or grounded sensor wireDefective oil pressure sending unitRestricted or severely leaking oil filterExcessive internal engine bearing clearance.Insufficient or severely contaminated engine oilBlocked oil pump pickup screen or severely worn oil pump

Mar 31, 2016 | Mercury Cars & Trucks

3 Answers

It is not pumping engine oil

You need a working oil pump to pump the oil around the engine. If the oil is not being pumped through, the oil pump has failed or there is a blockage in the lubrication system.

Most likely the oil pump has failed and needs to be replaced.

Sep 28, 2015 | Cars & Trucks

1 Answer

How to change oil pump ?

Engine oil pumps rarely fail. When the oil pressure is low, it's usually due to worn bearings. Other causes are possible, but the oil pump is inside the oil pan on the bottom of the engine. Before deciding that it needs to be replaced, the oil pressure should be checked with a pressure test gauge - not the gauge on the vehicle, because that gauge could be inaccurate. In fact, a defective oil pressure sending unit, gauge or wiring is far more likely than oil pump failure. Be sure the oil level is correct. Compare the reading in psi. to the manufacturers specification. Also consider the oil viscosity. Thin oil gives lower pressure than thicker oil (higher numbers like 40) however, thinner oil flows faster. Use the oil recommended. If the oil pump has really failed, bearings and other engine parts may be damaged. If you really do need to replace it: dodge pick up oil pump

May 30, 2014 | Dodge Ram Pickup 1500 Cars & Trucks

1 Answer

Mechanic book

which engine? size?
the ECU nor any lamp can save the engine with no oil or too low
or never changed out.
you missed, week level checks.
and if levels drop fast (as it will driving real fast)
you check more often, in fact you learn what your engine needs.
my guess is loss of oil pressure,
the idiot lamp( just name) comes on with its TOO LATE..
on most cars made.
get a real gauge called oil pressure.
or the engine overheated
or just bad luck.
what seized, cam , crank or rod bearings.
the machinist will tell you for sure what failed.
the pump or low levels.
push rod engines. the rear rod bearings like to fail first (low oil)
then on overhead cams, they bite dust first. (top end oiling can fail easy)
also, on the last rebuild did (no 2 before) the PO, ran water for antifreeze this cause the internal freeze plugs to pop and
water in oil and rear rod spun(seized)
water makes really poor oil substitute.
when you take it down there are tons of clues.
blue metal.
oil looks like chocolate milk shack
bearings spun ,cam bearings gone.
cracks in block and head.
ever inch checked then pressure tested before rebuild.

Aug 08, 2013 | Jeep Grand Cherokee Cars & Trucks

2 Answers

Oil pressure gauge is jumping from 20 to 40 psi. Is this a sign the oil pump is bad?

Probably not, as oil pumps are usually "forever" , unless the oil changes are not done and the system plugs up.
I'd recommend you find a garage that will remove the oil pressure sending unit and screw in a real oil pressure gauge, and test it.
Oil pressure switches that screw into the block fail occasionally, and dashboard oil pressure gauges sometimes fail also.
Be blessed.

Feb 23, 2013 | Cars & Trucks

1 Answer

High oil ressure and smoking.

That shop didn't fix the original problem and made it worse. They need to take care of the problem or at least refund your money for the failed repair unless you authorized them to take guesses at it. If they said that what they were doing would fix it then they're responsible for making it right.

Apr 01, 2017 | Cadillac Escalade Cars & Trucks

1 Answer

I have a 2003 3.7lt jeep sport with no oil pressure. what can cause this problem?

A low or no oil pressure reading verified either by your dash light or gauge, accompanied by tapping or knocking inside the engine indicates that a connecting rod, crankshaft or sometimes even a camshaft bearing has failed. If the engine has heavy internal sludge deposits, I'd also suspect a blocked oil pump pickup. Low or no reading can also be caused by a bad pressure sensor on the engine, or the wiring or the gauge may be faulty. To accurately determine exactly what the oil pressure is, it's best to install a mechanical test gauge so you get a direct reading.
Oil pumps often get blamed for pressure problems. By experience, of the hundreds I've seen, only one had actually failed. Most pumps are damaged or internally worn by debris from another failure (ie: bearings etc) Therefore replacing the pump fixes the result, not the cause and it fails again very soon.
If your engine is noisy, don't drive it. If you already have, chances are that the engine should be replaced as damage from no oil pressure is often extensive and debris migrates through and contaminates oil passages making in-car repairs less than reliable.

Jul 31, 2011 | Jeep Cherokee Cars & Trucks

3 Answers

Oil pressure gauge fluctuates from high to low. What could be the cause? Remedy?

Hi. This will indicate that there may be some sludge build up in the block, or the oil pressure switch may be damaged. The more serious issue will be a failing oil pump. To isolate the issue, simply, have a oil pressure test ran on this engine. If the test indicates that the true oil pressure is optimal at idle, kindly replace the oil pressure switch. Now, if the test proves that the pressure is indeed lower than factory specifications, this will confirm that the pump is damaged. Have the pump, and oil pump screen replaced, in this case.

NOTE_ I would, also, recommend to have the engine flushed asap.

Jun 03, 2010 | 1995 Ford Crown Victoria

2 Answers

1999 Jeep Cherokee Sport 4.0L engine. Oil

I'm assuming the engine is still running and no engine noise has occured due to loss of oil pressure, and it is just the gauge that is not reading? If so, the oil pressure switch that is located on the camshaft sensor, could have a bad connection or the oil sensor will need to be replaced. The oil sensor is located on the left side of the engine and is mounting horizontally on the camshaft sensor housing.

Apr 08, 2010 | 1999 Jeep Cherokee

1 Answer

How long does it take to change a oil pump in a 99 dodge ram the gauge keeps going to low when I come to a stop and then when I take off it goes back up.

Before replacing the oil pump, please do a mechanical oil pressure test to verify the oil pump is failing. Get the pressure specs for your engine, to verify the pump is failing. Your switch may be failing causing this concern and not the pump. IS the oil level at the proper level? These engines have an issue with the "pan" that is bolted to the lower side of the intake manifold. If your engine is using oil, and you can't find any leaks, this gasket has failed.

Jan 19, 2010 | 1999 Dodge Ram

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