C-12 No Start

Look @ this thread Cat c12 trim code locations

 

Here’s a pic of one of my trucks I took checking fuel pressure. The gauge is lying up by the valve covers. Follow the gauge hose to my fuel test port on the filter housing.

 

Thanks for the info. Crazy he gets the same thing I get when I try and pull the engine codes. It says ecm not present or malfunctioned on the TIM. So I need to look behind the return line for the port to check pressure, is that correct?

So I don't have a J1939 scanner, nor do I have a cruise control button. Is it possible to put power/ground to a ecm pin as if it was a cruise control button to get the ecm to flash the CEL?

Here's my checklist for this Sunday...
- check fuel pressure
- see if anything shows on the rpm gauge while running on ether
- unplug a sensor CEL come on
- check crank/cam sensor
- see if injectors are getting signal

Any other suggestions?

 

Measured the resistance on the primary and secondary timing sensors.

Primary: 114.5
Secondary: 663

I don't have the right fitting to check the fuel pressure at the correct port. I'll get the correct one during the week and try again. Since I had the fitting off of one of the top ports I checked the pressure at that port. It would go to 60 the bounce back to 45.

 

I was able to check the pressure at the correct port, video shows it all. I unplugged random sensors on the engine and the CEL didn't illuminate. Nothing registers on the rpm when cranking or running on ether. Pulled the valve cover and put a tester on the injector to see if there was any pulse. Found a video online of someone doing it, so I figured I'd give it a try. Now what?

 

Any idea why the front cover is dirty compared to the others, just curious.

 

Someone with Cat ET or test ECM time.

 

Seems kinda weird that your Jake housings and rockers are so clean

 

It has 1100 hours and about 7500 miles.

 

We had a lot of trouble with transmission and engine ecms in the Army on the ones that traveled overseas and we're exposed to saltwater. It could of spent it's whole life near the ocean or on a ship.