No Beep or Priming When Turning Key

Bkforce9

Cadet
Joined
May 29, 2020
Messages
20
Hello everyone,

I have recently finished installing 2 new longblocks in my 2000 Chap Sig 290. These are Volvo Penta 5.0GiPEFS (throttle body injection), serial # 4012003285. I was starting them for the 1st time to set the timing, and noticed 2 pinhole leaks in the body of the port motor fuel pump, so that motor is being disregarded and not tested until the new fuel pump arrives. The starboard motor beeped as normal, primed and started easily after getting the dist cap just right. I ran it for about 15 seconds on the muffs and shut it down because I wasn't seeing water come back out the drive yet, and was paranoid of burning up the impeller if it was running dry. They have heat exchangers installed. I have since been told it probably takes a little longer (30-45s or so?) to see water come back out while running on the muffs. It ran smooth for those 15 secs.

When I came back to try again yesterday to set the timing, the motor beeped and primed once, although it sounded like the fuel pump whined for a very brief couple seconds (or just sounded a little more strained perhaps), and the motor started immediately but only ran rough for about 1-2 seconds and died. I just to see if the timing had perhaps been bumped off again, but can't verify because.... the motor no longer beeps or primes when turning the key. No sound from the fuel pump that I can tell from the helm. It will still make a soft clicking sound when turning the key, and will crank and crank and crank as normal but will not start. The batteries are relatively new with good charge. I have checked under the dash behind the key and checked the spade connectors and wires, also checked for in-line fuses but don't see any. The kill switch is nestled under its overhang in the upward position (I think this is "RUN"). On the motors - the breaker is not flipped, all 3 fuses in the box are intact. The relay in the fuse box seems normal (no rust/corrosion) but not sure what else to look for there.

Any ideas on what I'm missing? Do I need to try putting a little fuel down the barrel to see if the ignition system is functioning? I'm just doubting I have ignition because suddenly the alarm is not sounding on key turn at the exact moment this all happened. Wiring diagram is attached. Thank you so much in advance. bandicam 2020-08-05 12-44-09-590.png
 

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alldodge

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Staff member
Joined
Mar 8, 2009
Messages
43,120
Need to use a voltmeter, it might be the ignition fuse
Start at the key and verify there is power on the Red/Purple wire full time, and present on the purple wire when key is turned ON

If power is present, then check for 12V on the Pink/White wire at the coil
 

Bkforce9

Cadet
Joined
May 29, 2020
Messages
20
Updates:

When turning the starboard key, the dash does not light up at all. It does light up when turning the port motor key. Still no beeping/priming when the starboard key is turned. At the key there is power to the red/purple full time, and power to purple only when key is on as expected. While key is on there is .08 volts at the pink wire exiting the coil, 0.0 volts when the key is off. The port side motor has 12 volts at the pink wire exiting the coil when the key is on for contrast.

Any help would be very appreciated.
 

alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
43,120
If you do not have a kill switch, then check for power at the gauges on purple wire. Sounding like a bad connection on the purple wire. Might be on a crimp connector attached to the wire with the gauges not coming on
 
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