fuel solenoid mep002a question

[hedgehog69]

Working on my last genset out of 4....hour meter says 9 hrs!! Nice shape. I got it running...all works great. But...it didn't shut off when I switched knob to OFF position. I asked some questions here...studied and thought about it...and figured out the brass thumbscrew at the bottom of the shutoff solenoid was missing. By some miracle, I found it on the trailer. I went to put it on tonight. Man...is that tight!! So I thought if I started the unit, solenoid would 'retract' and give me a little more room. Tried that and failed. Shut it off to find something else to use. Came back to unit...solenoid would 'retract' while I cranked it, but as soon as it started, it released it....and if the thumscrew were in place, it would have killed the engine. It worked right the first time...but not again. Is that solenoid fried? If so...where can i find a new one? Also...I need to print out another manual...so I couldn't research it there.

 

[glcaines]

It sounds to me like your fuel solenoid is working. I would suspect the oil pressure switch may be faulty.

 

[Speddmon]

If the solenoid pulls up while you are cranking and then drops out after you let go of the start switch, the solenoid is working just fine. Like gary mentioned, could be the oil pressure switch or high temp switch.

 

[hedgehog69]

The oil pressure guage appears to be working...but does peg out at 50

 

[Boatcarpenter]

hh69,
The oil pressure guage may be working, but it may be that the low oil pressure cutout switch is not. If it does not sense enough oil pressure, it will shut the engine down. Find the switch and complete the circuit by connecting the two wires together and then try running the unit.

BC

 

[Speddmon]

Don't forget the high temp switch I mentioned. Most people don't think of this switch because it doesn't go bad very often, but it will shut you down just as quickly and have the same symptoms as the oil pressure switch.

 

[hedgehog69]

I finally got the brass thumbscrew back in place..with a nut to torque it in...I hope. Unit operated as it should after that!! Got this unit sold...need to get some more...it has been fun learning about these units and am grateful for all the guidance!! THANK YOU !!