914 High Oil Temp - With Full Flight Video

Is it possible to swap out the oil temp sensor without draining the oil?

Craig E Maiman wrote:

Is it possible to swap out the oil temp sensor without draining the oil?

Never tried it. Given the location, I would expect a small spill.

Have a fast  friend standing by, with a plastic bung/finger - should be able to minimise the spillage.

 It is normal to see a small drop in oil pressure, when oil gets up to full operating temp.

Good Stable oil pressure and a (worryingly) high oil temperature rarely go together.

Sustained normal range oil temperature and low oil pressure indication are similarly unusual.

EGT temperature only fluctuate/change with changes in engine power/load and changes in fuel delivery (ie inflight adjustable carburetor).

I would bet that the readings your video show, are most likely caused by damaged wire(s) that is "shorting" (intermittent earthing out)  possibly related to under cowl air flow changes, due to aircraft attitude/engine power changes OR bad contacts OR a  distant last  - failing sensors (s)

Thanks, Sean.  I'll clean and secure the connections (they seem loose to me).  And I'll double-check the wiring/grounding.

The problem is FIXED!!  Last night I found that the crimp for the Oil Temp ground wire was totally loose.  I fixed that and flew this morning and all is well!  So happy it was that simple....

Thanks, everyone for your help, it's much appreciated.