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All great suggestions Rustystud! I try not to admit that I’m anywhere near Seattle. I actually live in Enumclaw. But I did work for Metro Transit. I retired out of Bellevue Base in April 2022. I consider myself to be very lucky to “get out” early at 60. I won’t bore the readers of this thread...

I remember algae blooms being a problem back in the 70’s, so it’s not just a bio-diesel problem. But, working for the local transit company for 30 years here in Washington, one thing that always seems to be an issue is when they change products. With what ever product they use, there’s a certain...

I started a thread last year around March or so. It was titled “DN4M pistons.” It was a 10 kw unit which has basically the same engine with two more cylinders. You may find some good information in that thread regarding how to decipher the numbers on top of the pistons. If my memory serves me...

You’re going to find those pistons very difficult to locate. And when you find them, they’re like gold in price. If at all possible, I would clean and reuse them. Can you see any marks on the top of them indicating the oversized? Those marks are in mm, not inches.

Sometimes the shut down solenoid simply reacts slower than normal. I would watch it when you shut down the machine with main switch S1. See if it reacts slowly. Or, simply shut down the unit manually by pulling the lever toward shut down by hand. See if the engine shuts down normally that way. I...

I’m told that nitrogen is an off-gas of using this method to load test. But being that 80% of the air that we breathe is already nitrogen, and this brine tank is outside of my shop, I don’t see a risk. Also, this is considered to be low voltage. Any voltage greater than 500 is considered high...

Those are grounding rods from a generator that I repurposed. The further down they go into the brine tank, the higher the load becomes. Also, as the brine temperature increases, so does the load. So it’s necessary to keep an eye on it for a short period of time, or the load can increase too far...

Here’s how I put a load on my MEP-803A stand-by unit. It’s a simple brine tank. I leave it right next to where my generator sits. I just have to add water once in a while from evaporation. Never have to add salt, it doesn’t evaporate. I bought a 10’ length of 6 gauge cable with 3 conductors. I...

Good work!

I’m sure you’ll get it figured out. Tomorrow’s a new day. A cup of coffee in the morning and it’ll be running in no time!

Do you believe that the fuel rail is moving freely? Does the engine sound like it has compression when it’s cranking over? It’s apparent that you’ve had several of these units before.

It sure sounds like you’ve got the oil pressure issue resolved. Have you replaced both of the fuel filters yet? You could very well have a restriction there. With the S1 in the run position you should have a steady stream of fuel returning to the tank.

Thanks Kurt for that clarification!

On the 802A’s and the 803A’s you are correct in your assessment that the left most “relay” isn’t actually a relay at all. I believe that it’s referred to as a “frequency trip switch.” I believe that it’s responsible for tripping faults for low fuel level, low oil pressure, high coolant...

Good morning Rich, I’ve only been a member here for a short time compared to many of you. But I’ve read many of the threads that you’ve contributed to. You’ve definitely helped countless people with your experience here. Thanks!

It's very cool that people take the time to make aftermarket parts in an effort to keep these awesome MEP generators running isn't it?

I think of the tailspin this would have caused a first-time user. And then, attempting to get help on this forum. I've read some pretty elaborate threads on this forum where one of you very experienced guys took the time to walk someone through the process of diagnosis for many different...

Definitely consult with your electrician. On single phase 120/240 you’re using lugs neutral, L1 & L3. There’s no power on L2 in single phase. Please refer to the previous photo of switch S8. The larger MEP’s don’t have the ability to switch between single and 3 phase. It’s what makes some of...

More will be revealed! Good work so far.

I’m also a believer in soft start kits. Even if you’re running on mainline power, they will increase the life expectancy of the equipment.