003A Down. Had to buy another generator.

[Chainbreaker]

Look at the E2 and E3 electric fuel pumps. Are they EXACTLY the same? Or are they two different types. Look for the part numbers on them. Facet makes several different pumps, that all LOOK the same, but are not. The pump that is suposed to be on the set, is a flow through type. That means when one fails, the other keeps pumping, THROUGH the failed pump. If the pumps are not flow through type pumps, then you get this sort of failure.

Definitely worth verifying that the proper pumps are installed. The numbers in -24P manual and on my units show the * Facet PN 480517E (stamped on mounting flange). Here's how to locate the P/N.

* Note the user review below the data sheet in the link above regarding the Facet 480517E

 

[Jeepsinker]

Look at the E2 and E3 electric fuel pumps. Are they EXACTLY the same? Or are they two different types. Look for the part numbers on them. Facet makes several different pumps, that all LOOK the same, but are not. The pump that is suposed to be on the set, is a flow through type. That means when one fails, the other keeps pumping, THROUGH the failed pump. If the pumps are not flow through type pumps, then you get this sort of failure.

Yes, they are these same correct part number. When it dies I can open the petcock on the final filter and the pumps speed up and are giving good pressure.

 

[Jeepsinker]

I have a MEP-003a about 10-15 miles from you (in a shed on the family ranch on Hwy 26 about 10 miles east of DeRidder) doing the exact same thing, I have a spare injection pump for it, just have not found time to get it installed.

I'm actually in Dry Creek over on Hwy 394, so closer than you thought. You know the place with the big blue shop and the military trucks? That's me.

 

[Jeepsinker]

I would recommend that once you sort out the problem that you run the generator at least once per month. I test run mine religiously once per month with the whole house on the load. I run it a minimum of 30 minutes during test runs. We also have numerous power outages which exercise the genset, some lasting several days and one over a week. I've had my MEP003A for 11 years now and have never had a failure.

That's great advice and I normally do that Gary. Problem is that I've been in Korea for the past five months. I think the plunger stuck before because the fuel had just gotten too old.

 

[Jeepsinker]

The IP is pretty easy to go through on these units. I've got a post that is a tear down and repair with pics. Easy to remove and disassemble. If you've had issues with the pump before, yes.. pull it apart and check it out.

I saw your thread and I'm going to do exactly that. Very helpful thread.

 

[rickf]

Would you happen to have a link to that thread on the pump tear down?

 

[Zed254]

Ambac M-50 Rebuild w/ pics (MEP-003A)

Hey alls... Just buttoned up the rebuild on my MEP-003a injection pump (Ambac M50) and documented the process. Member "jamawieb" gave me a write up on the tear down and it was very straight forward. I'll post his write up in steps with pictures from my rebuild and some details on what I had...

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