Recent content by Maestro

I did confirm all the meter pumps fuel adjustment pins moves freely on all 4, as I said they are all new, there is no signs of any wear on the bottom which engages the cam shaft. When all the meter pumps are removed the fuel adjustment rack does move freely, but it does not spring to the...

I have been working on a MEP-803a I bought from auction that had a number of issues. Most of them were electrical, broken or missing parts. All those have been addressed and still can not get it started. The Metering Pumps were replaced and installed incorrect, I have fixed that. The front gear...

@Ray70, as you pointed out the fuel stop/start lever did not look like may others I have see. My unit is a 2010 model and it appears that newer units have a similar lever. I know the metering pumps were replaced, not original no green paint on them and they appear to have a date code of 2023 on...

The spring on the solenoid is in working order, I checked at all ready. I found this https://www.steelsoldiers.com/threads/mep-803a-governor-question.223729/ this could be it since I found one of the gaskets for the metering pumps in the bottom of the unit, but I could not find which one it...

Yes the knob moves freely in the slot. What I figured out when the solenoid is not powered it has spring and it should push the top of the lever all the way to left until it hits the hard stop nut. but the lever stops half way. Since the knob is not tight, the only way the lever can move to the...

Is fuel supply open? - The top of level to the left or right? The first picture shows the solenoid fully pulled in, it can not move any more to the right, however, it can more to the left when not powered, but it is stopped by the lever

The only way to find out is to open it up and I do not want to do that if there is possible something else going on. Here are two pictures of the fuel shutoff solenoid and stop/start lever. The first one is with solenoid energize, it is pulled in, the stop/start lever did not move to the stop...

@Guyfang, how does the MPU control fuel? From what I can see the fuel pumps are mechanical there is no direct electrical connection to the fuel supply other than the low pressure pumps. My understanding is the MPU measure RPM and is used to ensure RPM is maintained under load and will shut off...

I am going to wait to get the MPU before starting a thread it will not run, however, I do have quick question. When I first tied starting it and would not run I check to see it fuel was getting up to the injectors, the lines were dry so I tried bleeding the line. I also gave a squirt of starter...

Figure out why it will not start and run and have to thank @Guyfang, read another thread about a MEP-803 not running and he suggested to look at the MPU and when I went to look at it, it was missing. Earlier on I saw two wires not connected and could not figure out what they were for, just...

Again, Thank you everyone for your help, With the help of @kloppk I was able to determine I had a defective S14. It would not allow K16 to energize. I got a new S14 and now it cranks using S1. I now have a new problem and I will start a new thread since it an engine problem not electrical. The...

Actually, I said K12 energized after S1 returns to the run position and it stays energize even after the fault is clear. I just checked K16 and it to only energizes after the run switch is released, otherwise it does not have power and stay energized after fault being cleared. S3 does have power...

Just jumpered S1-7 to S1-2 and it did not turn over, still only hear K18 engaging. I am leading toward the S14 and tried reaching out to @kloppk to get his opinion since he makes replacement S14. For some reason the website would not allow me to start a conversation with him. @peapvp I plan to...

I finally had some time to get back to debugging the electrical issue. I have verified all the correct voltages are on S1, depending on position of switch. I have 24V on S1 - 2,4,6,8 when S1 is in the start position I get 20V on pin 7, I followed that to K12 (Engine Fault Relay) pin 8 to pin...

Is there anyone in the Philly area who has knowledge about the MEP-803a generators who could help me trouble shoot a no crank issue when using the main switch S1. Everything else appears to work. Just can not get it to start. PM if you are willing to help out someone who is not familiar with...