For some time I have had an intermittent probably starting my Volvo engine ,
I would turn the battery switch on and off a few times and it would start . I
don't know if that was coincidental or not. Last night we went out to go for a
sail and the engine would not start and I discovered that the generator would
not start either. I would trouble shoot this more myself , but a year ago and
reconfirmed a week ago , I agreed to take an elderly couple and their family
out on my boat for a sunset sail to celebrate their 50 th Anniversary , they
are really looking forward to it and so need to solve this issue within five
days. Below is what I determined last night ;
Neither engine will start.
Have 12.6 V at both solenoids
Have 12.6 V at battery wires on back side of battery
When I turn the key , the fan comes on , turn the key to
start and fan and gauges go dead.
After that Voltage only measures 11. 8
After short time , turn key and fan runs very slowly
Turn key again , fan does not run , gauges dead , even alarm
button pushed , nothing
I switched wires to another 12v house battery , same things
Generator switch has 12.6 V at the terminals , five white
wires , don't know which does what.
The glow plug lite does not even come on.
fuse is good on back side of Gen.
Since battery voltage went down after key is turned a few
times , I checked for heat on starter & solenoid , both cool to touch.
It seems logical that whatever the problem is , that it is
affecting both engines
My understanding is that when the key is turned , the ground
is momentarily connected by a switch , where is this switch located ?
Both engines would not share this switch , would they.
Do both engines share the same ground?
To me it seems like corrosion on a terminal , but I get 12.6
on the back of the battery switches between the positive and negative wires ,
from there I have 12.6 at the solenoids
Any thoughts on what to check or what may be my problem
would be appreciated.