Fired up the old girl last week (1993 Westerbeke
w46 in a 1986 O'Day 40). No problems, clean exhaust
, purred like a kitten for 5 or 6 minutes. Then stopped dead, cranks but won't fire.
Replaced the primary fuel filter
, just in case, but it looked OK. No start.
Pulled the return line at the tank and the lift
pump circulates fuel
through the system.
Okay we've got air and probably fuel
but no start.
The next thing that comes to mind is the shut down solenoid. Checked connections at ignition switch and added a bus bar to the switched power because there were a bunch of wires on 1 #8 screw terminal.
Some DPO has run a switched wire to the lift
pump, bypassing the double light blue factory wires. Checked the wiring
diagram in the W46 manual, not the same
Okay leave that alone for now. Traced the wire from the shut-off solenoid to a connector with 2 light blue wires going into the harness.(Numbered 17 and 18) One of these is broken clean through. Maybe its been cut in the past, maybe it broke in my tugging but thinking back it was a clean break with no corrosion
. This is the only part of the engine
that I can't access easily and can barely get a hand on.
Fixed the broken wire, still no joy. Hot wired the solenoid, still nothing.
Checked for continuity through the solenoid. I forget what the resistance was but its not open or shorted.
Soooo, does any one know how to test the blasted thing without pulling it out?
Better yet, does anyone know an alternate source of the correct solenoid? It's a CAV pump and probably fits other engines. I've looked at the Mitsubishi 4DQ5 manual and its a different pump.