M925A2 Cold Start

[Russ Knight]

My ether injector is apparently not working. When the switch is pressed on the dash, does it send 24v to the solenoid on the ether injector? If so, it isn't. Not getting voltage at the switch / button either, which is plugged in. Any ideas?

Thank you.

 

[Jbulach]

Are you checking for voltage while cranking the starter?


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[Russ Knight]

I am not.

 

[MAdams]

You have to have fuel pressure for the circuit to be complete so that means the engine has to be cranking for the solenoid to open.

 

[Russ Knight]

Thank you very much.

 

[porkysplace]

It should be tied into to a temperature sensor also.

 

[Russ Knight]

Is there a reason not to straight wire it to bypass those interlocks?

 

[doghead]

Unless you are experiencing 20 degree temperatures, you should not need it at all.

A look at the schematic should help you understand how it works.

Reading the operating instructions on the dash or in the -10 TM should help too.

 

[74M35A2]

This one is a good example of read the manual, I would have to admit.

During cranking, press and hold the ether button for 3 full seconds. This fills a cup, which when the button is then released, this measured quantity is administered to the engine in a calibrated way. When the button is released is when you will observe the engine to fire. Hold for 3 full seconds during cranking, then release the button while still cranking. It does not activate unless the starter is engaged and the engine temp is cold. There is no fuel pressure interlock, that information is not correct.

Ether is not allowed into a warm engine because it can cause an over-RPM condition, since the governor does not have control of the engine. The system works perfectly as stock.

 

[98G]

Is there a reason not to straight wire it to bypass those interlocks?

Yes absolutely.

You only want it cold and you only want it while cranking.

 

[frank8003]

There is a complete dash placard in that truck?