Trojan Boat Forum

When the boat is running, the oil gauge seems to be at 100% at all times. Needle flutters around the 100% mark. Could it be broken or should I be concerned?

Mine reads 35 to 40 lbs of pressure. It will read higher when cold.

got one of mine doing the same thing, will post when I solve it, oh yea and new engines not using the same sending unit. Me thinks the sending unit is the culprit on mine.

I replaced my gauges and posted a detailed thread on the process. You can view the thread here: www.trojanboats.net/wforum/viewtopic.php?f=1&t=7585. I would recommend reading through the thread to get a general idea of what's involved with gauges and sending units.

Bad ground on the gauge or bad/wrong sender . also ground sender wire

Just went through similar exercise.

Long story short, temp sender went out. Performed tests to isolate that it was the sender ( grounded out to peg the guage).
Went to the MC dealer to buy a new sender and put it in. started up and guage ran out about 240 degree's PANIC set in and I shut down the engine!!!

Opened the hatch and the engine was cool.

Learned through a conversation with Bob at beacon that my 1977 has Delco guages that operate on a different ohm range than new guages. ordered the right sending unit from him and all is good.