I changed the fuel filters on my Yanmar 2GM20F. Bled the system at the secondary filter (2 bolts) and at each of the fuel injectors (2). It's never run better! But I noticed during my bleed procedure that one of the 2 compression release levers is stuck in the closed (Run) position. (Strange, because I'd been using it minutes prior.) I sprayed some PB Blaster, but still stuck. I searched for clues online, but seems most people experience them stuck open (No Compression). Any ideas? Thanks!
Just pull the rocker cover off and see why it is stuck…
Straight forward job.
BTW, welcome aboard
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
I think the turn it over comment was it's possible for that cylinder to be in compression and since the decompression lever opens the exhaust valve, if that cylinder has pressure in it, that pressure could hold the valve closed, move the cylinder off the compression stroke and the lever may open. Too easy not to give it a try
PS, I've seen it happen too.
Just kidding of course. I remember throwing the lever too far on a Volvo and compression not releasing enough to spin the engine. I learned a lot on that emergency. I love those things. I wish all diesel engines had them.