We have had trouble from the outset with XMSN OIL CHIP Lights. Generally, the alert can be depended upon to appear after it's been raining or the aircraft has been left out in the rain. While it is hangared all the time, getting wet from time to time is part of the package in these latitudes!
In one instance, I got an XMSN OIL HOT, which is a Warning rather than a Caution, less than ten minutes after startup. The aircraft had been parked out overnight in Gloucestershire. The press and temp were showing normal and, on a miserable day in March, the possibility of actually heating the oil that much in ten minutes was unlikely to say the least. So, I shut it down and restarted and hey presto, no light!
We've had the plug and its socket/holder replaced but to no avail.
A giveaway is that when the chip light comes on, the burner doesn't do anything and, it goes out again after a few minutes. Obviously, we continue to pull the plugs every time they light but we're fed up of continually finding nothing. We're getting oil analysis done now at intervals as a method of trying to determine what, if anything, is in the oil.
Last edited by heliski22; 8th Aug 2007 at 12:07.