Who rebuilds MFI fuel Pumps?

bavaria911 · bavaria911's Garage

I had my MFI fuel pump hooked up and when we tried to start the motor - the pump leaked in three areas. My guess is the pump sat too long in my basement and the rubber seal dried. Who knows a good rebuilder?
It is shooting gas out at the electric (black plastic) piece.

Wilhelm · 04-13-2011, 07:39 PM

You might be able to do it yourself. Check this thread.

MFI Open Heart Surgery II - The Fuel Pump

mtndawg · 04-13-2011, 07:46 PM

I bought a rebuild from these guys. It has a warranty too.
Fuel Injection Corporation

IanTBoyd · IanTBoyd's Garage

Sorry to be off topic but does anyone know if these are the same as the 914 three port pumps?

356RS · 356RS's Garage

They may look the same but are very different in fuel delivery specifications.

LM3929 · 04-14-2011, 09:15 AM

The 914 pump that I have, has three ports that appear to be the same size.

Lorne M.

Flieger · Flieger's Garage

But it is not the same spec. Did the 914-6 use MFI?

The eBay ones are not, either, as I understand.

They are making the pumps again, but they cost $600 from Porsche and are made in China- so use at your own risk. I would use a reputable rebuilder. I think Zimms is one. I got a recently rebuilt one from a Pelican who was converting from MFI, as mine was non-rebuildable. The brushes had worn through the commutator and into the shaft.

IanTBoyd · IanTBoyd's Garage

I believe 914-6's were carb'd

dtw · 04-14-2011, 10:48 AM

Quote:

Originally Posted by IanTBoyd

I believe 914-6's were carb'd

Yep. Pumps for carbs look the same but have completely different operating pressure. NOT interchangeable.

IanTBoyd · IanTBoyd's Garage

Quote:

Quote de IanTBoyd

I believe 914-6's were carb'd

Yep. Pumps for carbs look the same but have completely different operating pressure. NOT interchangeable.

Aware of that, the earlier, up til 75, 4 cylinder cars were F.I. And had a three port fuel pump that look just like this mfi pump.

Flieger · Flieger's Garage

CIS does NOT equal MFI. The pumps will not perform the mass flow and pressure at high rpm.

bavaria911 · bavaria911's Garage

I found a guy in CA and mailed my leaking MFI pump to him today. He'll rebuild and ship for $190. Any issues in 12 months -- 100% replacement. Let's see what I get.