[Ram Jet]

Originally Posted by 1994Ninja250F

Hey guys,

Having a strange issue, and after 8 years of being here and at N250RC, I haven't ever seen it discussed. Seems to be a bad connection from the oil pressure sending unit (front of the engine near the exhaust headers), to the oil light on the dash.

Here's the problem: When I turn the key to ON (engine off), the red oil pressure light on the dash does not light. If I take my finger and even slightly touch the rubber boot on the oil pressure sending unit, the light will then come on. However, it's extremely fussy and sensitive. Chances are, after a ride when I shut the engine off but leave the key on, the light does not come on after the engine stops turning. This is because it's so touchy, that the wind from the ride knocked the connection out of its sweet spot. Being anal about the smallest little things, it's driving me nuts knowing that if for some reason I lose oil pressure while riding, there's a good chance I wouldn't know because of this issue.

Does anyone know the procedure for fixing this? I didn't see anything about it in the service manual or the supplement. I'm assuming I need to atleast replace the rubber boot, which is where the wire feeds in to.

It may not involve much more that cleaning the contast on the oil pressure sending unit and the connector under the rubber boot with some fine steel wool. Then as a precaution you could spray some electrical contact cleaner on the connections and apply some dielectric grease. I always worry about "idiot lights" that's why I installed an oil pressure gauge on my Ninja.

Bill