What causes oil pressure to drop on a Harley Davidson?
Too much clearance between the gerotors on the feed side of the pump or too much clearance between the face of the cam plate and feed gerotor will cause erratic oil pressure as described by the OP. A partial blockage in the feed line to the cam case could also cause the erratic oil pressure but two sources listed above are the usual suspects.
What should oil pressure be on a Twin Cam 88?
Once it is warmed up and under load it shows 20 psi. and it has gone to 5-10 psi and come back up again. At idle it shows 0 psi. Is this something I should be worried about or is it normal for a Twin Cam 88. If you could shed any light on this matter I would greatly appreciate it. Those oil pressure numbers are typical for your m/c.
What should the oil temp be on a Harley Davidson?
One of my bikes is a 2002 FLHT, all bore 107″ built motor (124TQ/110HP). I run a Jagg low mount 10 row oil cooler and even now, in the mid 90s, oil temp rarely sees 220*. Your oil temps may see 230* or even 250* but that would not change your oil pressure which is not a function of the oil temperature.
What happens when you have high oil pressure?
Higher pressures just pump excess oil into the motor, where it causes issues such as increased carry over, and sumping. And if you are building for power, you should look into the power requirements of pumping high pressure fluids. IMHO high oil pressure for Harley’s is a selling point.
Too much clearance between the gerotors on the feed side of the pump or too much clearance between the face of the cam plate and feed gerotor will cause erratic oil pressure as described by the OP. A partial blockage in the feed line to the cam case could also cause the erratic oil pressure but two sources listed above are the usual suspects.
Once it is warmed up and under load it shows 20 psi. and it has gone to 5-10 psi and come back up again. At idle it shows 0 psi. Is this something I should be worried about or is it normal for a Twin Cam 88. If you could shed any light on this matter I would greatly appreciate it. Those oil pressure numbers are typical for your m/c.
How big is the oil pressure gage on a Harley?
Click to expand… Tool that may be required to remove the oil pressure sending unit for the oil pressure gage. 15/16″ Crows Foot Snap-On FC30B.
One of my bikes is a 2002 FLHT, all bore 107″ built motor (124TQ/110HP). I run a Jagg low mount 10 row oil cooler and even now, in the mid 90s, oil temp rarely sees 220*. Your oil temps may see 230* or even 250* but that would not change your oil pressure which is not a function of the oil temperature.
What causes an engine to lose oil pressure as it warms up?
The most likely cause of a car losing oil pressure when it warms up is a problem with the pressure relief valve, which regulates the oil pressure to ensure that there is enough pressure to circulate oil throughout the engine. When oil pressure is low, not enough oil is being distributed to the engine, potentially causing engine failure.
What should oil pressure be at 70 mph?
70 mph is cruising speed on most roads in Texas. The psi is about 28 at that speed after about 30 min on the road. The manual says that the pressure is supposed to be 32 psi with oil temp @ 230 deg. f. @2000 rpm (55 mph).
What happens when you have low oil pressure?
One of the desired effects of adequate lubrication is the reduction of friction between and among moving metal parts. By reducing or eliminating friction, the engine is able to generate power at maximum efficiency. However, if there is low oil pressure, then there is also a commensurate increase in friction.
What happens if your oil pressure is low?
Without oil pressure an engine will experience extreme internal engine damage due to heat caused by friction. All engines run on a pre-set pressure that cannot be adjusted. This pressure will vary depending on engine speed, temperature and weight oil. As a rule of thumb, the engine oil pressure gauge shouldn’t drop below…
The most likely cause of a car losing oil pressure when it warms up is a problem with the pressure relief valve, which regulates the oil pressure to ensure that there is enough pressure to circulate oil throughout the engine. When oil pressure is low, not enough oil is being distributed to the engine, potentially causing engine failure.
What should oil pressure be after changing oil sending unit?
OIl pressure still drops after changing oil sending unit? When truck is first started, oil pressure is normal, around 40 psi. When engine temp starts up, oil pressure slowly falls until “Stop Engine – Low Oil Pressure” warning comes on. Switch truck off a few second, maybe 20-30, restart truck and back to 40. And on and on.
What happens if there is no oil in the engine?
Step 7 – If the engine has no oil pressure, suspect the oil pump drive, some manufactures use a belt to drive the pump which are prone to failure. Engine oil is used to cool and lubricate bearing and machined surfaces. Without oil pressure an engine will experience extreme internal engine damage due to heat caused by friction.
What to do when oil pressure drops on a dolt?
Dolt has you covered above. As suggested, polish the plunger and clean the bore so that it (the plunger) slides easily in the port with no binding. While you are in there, pull the plate and check out the pump. Make sure to use new orings when reassembling and ensure the pump is aligned.
What should the oil pressure be at idle?
Manual says the pressure should be 40 psi at idol, but the gauge is inaccurate. You can test it by T-tapping a pressure gauge in line with your oil pressure sending unit, and see if you are actually running the correct pressures. Question 1, how often do you change your oil?
What should the oil pressure be on a Harley Davidson?
The psi is about 28 at that speed after about 30 min on the road. The manual says that the pressure is supposed to be 32 psi with oil temp @ 230 deg. f. @2000 rpm (55 mph). I don’t know what the temp. of the oil is, but there is a time when the pressures will meet those specifications, which is about 20 min. on the road starting from cold.
Dolt has you covered above. As suggested, polish the plunger and clean the bore so that it (the plunger) slides easily in the port with no binding. While you are in there, pull the plate and check out the pump. Make sure to use new orings when reassembling and ensure the pump is aligned.
What should the oil pressure be in a V-twin?
Yes, you can get it in the circle at 20′, but at 100 yards…..it’s off. 2.) Although guage is reading 0-2 lbs, the sending unit doesn’t trigger the idiot light until 3 psi, or lower. If you’re not seeing a light, you’re above 4 psi. 3.) Your tappets, rocker shafts and cam chain adjusters are dependant on oil pressure.