BF75 No Oil Pressure Lamp

[mohearn]

"Got an early model BF75 (

"Got an early model BF75 (late 70, early 80) with no oil pressure lamp and loud mechanical type noise. After removing the cylinder head found that the o-ring between the cylinder head and block for the oil pump was not there. I replaced it. Now I get the oil pressure lamp on at midrange and high RPMs. It's still noisy.

I'm thinking I got a bad conrod bearing (the knocking and lack of oil pressure).

Any thoughts or suggestions."

 

[justintime]

you might just have to open it

you might just have to open it up

 

[ikia]

The " lamp on " indica

The " lamp on " indicates that there is oil pressure.Lamp off means no pressure.

 

[sandkicker]

Oil light should be on at idle

Oil light should be on at idle.

 

[50yr marine mechanic]

oil pressure indicator terminal broken. Is this a neon bulb as shown on the OEM drawing or a tungsten lamp, and at what voltage?

 

[50yr marine mechanic]

 

[50yr marine mechanic]

Tested the voltage, is 34vdc and constant regardless of rpm. Will be a challenge to find a LED or something else that is that small, puts out lots of lumens as well, to replace the OEM light source.