Mike, Make sure your fuel tank vent isn't clogged, blocked or covered. The engine can start with what's in the fuel line but it will soon starve the diesel when air can't get into the tank. A heavy application of boat wax over the vent is enough to restrict air going in.
Chuck Gilchrest S/V Half Magic 1983 LF 35 Padanaram, MA From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Hoyt, Mike via CnC-List Sent: Wednesday, April 20, 2016 10:14 AM To: cnc-list@cnc-list.com Cc: Hoyt, Mike <mike.h...@impgroup.com> Subject: Stus-List Yanmar Governor issues? HI all. Josh Muckley and I have been working on my Yanmar 3GM30F together via email. This list is without a doubt the best source of sailboat information I have encountered. With Josh's help for diesel issues, Fred for electronics and all the other experience it is a treasure for owners. I don't think I can express enough how great this is. We launched Persistence April 4 and our 3GM30F ran fine. Ran fine April 8 as well and then on April 9 when scheduled to step mast the motor would not start. Appeared starved of fuel. Over the past 10 days we have bled the low pressure lines, bypassed the mechanical lift fuel pump with 12v pump, primed and bled everything many times, check at injectors and eventually deducted no fuel coming from injector pump but plenty of air free fuel going to it. Eventually removed the injector pump and have had it serviced. With the pump out we have noticed the governor lever is not moving freely. This appears to be most likely caused by the governor sleeve being too far aft With all the experience in this list has anyone with a yanmar 2gm or 3gm of any sort had problems diagnosed with the governor? Initial inspection thru injector pump opening looks like the governor weights may be slightly bent out of position. Timing cover must come off to inspect further Just hoping for pearls of wisdom from our great list Mike Persistence 1987 Frers 33 #16 Dead in the Water In Halifax, NS
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