2010 FLHTK HARLEY-DAVIDSON I noticed the oil pressure dropped from around 32 to what appeared to be 16. Then it dropped almost to 0. I pulled over and let it cool down for 15 minutes and rode to my de I noticed the oil pressure dropped from around 32 to what appeared to be 16. Then it dropped almost to 0. I pulled over and let it cool down for 15 minutes and rode to my destination with the oil pressure guage reading around 32. I started the bike 3 hours later and there was a sound coming from the engine area which resembled that of an engine in need of oil but the crankcase was full and then some. My air temp guage was reading close to 100 and higher. I also noticed that shifting became difficult in the lower gears.

Need a faster answer?
Hi Tonykoegel, if your oil pressure gauge is acting eratic or your oil pressure light stays on you could have a faulty sending unit, gauge or air in the system or a restricted oil filter, start by checking oil level in tank and make sure it is between the add and full mark. With engine at normal operating temperature 180-230 degrees and the use of a 10 micron synthetic media oil filter, oil pressure will be 30-38 psi at 2,000 RPM and 3-5 psi. at idle. The oil pressure light is designed to come on at 2 psi. or less. To accurately test oil pressure remove oil pressure sending unit and install known good oil pressure gauge that reads 0-50, there might possibly be some plumbing required for hard to access points. If you are out in the middle of nowhere and there is no cell phone service and your oil pressure gauge isn't working and your oil pressure light is burned out, despair not, you still have one last line of defense left HYDRAULIC LIFTERS, as long as those tireless workers are quiet, you have oil pressure, maybe not much, but enough to get you down the road at a slow to moderate speed using the least amount of RPMS as necessary. Good luck and have nice day.
Was this answer helpful?
Yes
No
Thank you for your feedback!