Recently bought Ericson
30+ with a repowered Universal M3-20B diesel
ran fine initially but about a month into the season, it started stalling frequently. Was able to start most of the time but it created some scary situations in crowded seaways.
I tried replacing primary and secondary fuel
filters. The primary was filled with gunk and some water
in the separator.
After this didn't fix it, I resorted to local Universal certified mechanics. He replaced all of the rubber fuel
lines from the primary through fuel injector pump
. Also replaced the spring and stop/pivot that connects the stop cable to the stop lever and throttle arm. This seemed to fix things but four sails
later, it was stalling again.
Fuel pressure measurements suggested the lift pump
wasn't keeping up with demand for fuel and pressure was going negative. So... there is now a new lift pump
. Pump had some corrosion
inside which tech thinks was from water
. Still stalling. Fuel injectors have been tested and have an appropriate spray pattern.
stalls whether drawing from my tank or from a clean tank plumbed in after the primary at the marina.
Any thoughts? The only fuel system left to address is the fuel injector pump
and the mechanical governor. I understand that the later fails almost never.
Getting to be very frustrating - and expensive.
Anyone have this experience with their engine? Solutions?
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