Re: Yanmar no start.
Sounds like you have it narrowed to a fuel issue.
Check your diesel fuel tank air vent to ensure it is not clogged or obstructed.
Does the start/generator run okay with no load?
Do you have duel racor filters? If so, is there a vacuum when the engine is running? And, have you tried switching to the alternate filter?
With best regards,
Sailing Vessel - Cream Puff - SM2K - #275
Currently cruising - Tahiti, French Polynesia
main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On
Behalf Of Dan Carlson
Thanks for the tips Bill and Steve,
I tried to trouble shoot the solenoid by having Lori actuate the stop button on the console while I monitored for the clicking down at the engine. That sounded normal. I tried to start and again it cranked but did not catch. But it sounded like it was just getting some combustion at the end, so one more try and it slowly caught and when I gave it some slight throttle in neutral it picked up. I ran it for 15 minutes at 1700 rpm to get to temperature. It had a little bit of load from the alternator, charging the Li batteries. After it reached temp I switched the alternator regulator to "float"/ no load, ran the rpms slowly up to 2500 and back down to 1000 rpm. After a minute there I put the throttle back to the idle position and the rpms decreased to about 500 and then the engine stopped. So it seems like I have a low rpm idle setting or fuel flow issue at idle. I think I can adjust the idle up slightly, but that doesn't account for the change in performance of the engine, both the unexpected stopping as well as the difficult starting. (I've never had to apply any throttle when starting in the past.)
Steve, I'm not sure if I can test that small of a change in the fuel pump performance on the boat.
Also, the fuel injectors were rebuilt and the valves adjusted a a little less than two hundred hours ago.
Does that trigger any more ideas?
Thanks and regards, Daniel Carlson on sv BeBe, SM #387.
On Wed, Feb 3, 2021, 4:23 PM CW Bill Rouse <brouse@...> wrote: