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Opel Addict Since 73
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Discussion Starter · #1 ·
Electric Fuel Pump

Does anyone have a source for a NOS electric fuel pump for a 75 injected Opel. Alternatively...has anyone ever had one of these pumps rebuilt? If so...I'd like to know your source and what your experience was after the rebuild? (good or bad) Thanks. -SD
 

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I have a similar question ... will an after market fuel pump (Carter, Holley, etc) work as long as it's within pressure and volume specs? ... and if it's not within specs of the factory pump, couldn't a "regulator" be used to bring it in spec?

Thanks ..

Ken
 

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Guys, I'm not too strong on the Opel FI, but on my V-6, there is a pressure regulator on the fuel rail that limits the pressure and dumps excess back to the fuel tank. I believe there is a similar system on the Opel FI, but don't quote me on that. That being said and if it does work that way, check out the fuel pump book at your local auto parts store. I picked up a 70 psi fuel pump that has 3 ports on the head, one for fuel out, one for fuel in and the third for pressure bypass, which also allows a continual amount of fuel to flow through the pump back to the tank to keep it cool. And don't forget to get a real good filter to keep the pump and injectors clean. HTH.

Ron
 

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Remember to mount the electric fuel pump in the back near the tank. They are made to push, not to pull. I have one installed on my 72 with a DGAV and no regulator. No trouble in about 5 years of operation.
 

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boomerang opeler
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scott i dont know which injection system is on your car but mechanical(has an distribution block on the inner wing and solid pipes going to the inlet manifold) or electronic (has a single fuel rail on the manifold with injectors that have wires running to them) but they both use about the same pressure as any other system so almost any fuel injection pump will work
i dont think they are servicable so thats not a worry

and to ken the reg on the fuel line would sort the pressure anyway:D
 

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Interesting timing for this question. I saw this on eBay, and wondered if it was an EFI fuel pump (that would fit my '75 SportWagon with EFI) or a normal low pressure carb-type unit:

http://cgi.ebay.com/ebaymotors/ws/e...&category=33555&sspagename=STRK:MEBWA:IT&rd=1


The application table seems to have it fitting most modern cars after 1982, and many cars (including BMW's) that I know to be fuel injected, so it might be the right one. I have e-mailed the seller and asked if it works for the '75 Opel with EFI, and what the specs are (rate and pressure). Stay tuned...
 

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eBay pump

kwilford said:
Interesting timing for this question. I saw this on eBay, and wondered if it was an EFI fuel pump (that would fit my '75 SportWagon with EFI) or a normal low pressure carb-type unit:

http://cgi.ebay.com/ebaymotors/ws/e...&category=33555&sspagename=STRK:MEBWA:IT&rd=1


The application table seems to have it fitting most modern cars after 1982, and many cars (including BMW's) that I know to be fuel injected, so it might be the right one. I have e-mailed the seller and asked if it works for the '75 Opel with EFI, and what the specs are (rate and pressure). Stay tuned...
In a word, YES!! Most of the cars in that list use the "same spec" Bosch replacement pump . . . the one for the 635CSi is the same Bosch P/N as the one in my Bitter and also the '75 FI.
:)
 

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And Otto, what is the Bosch part number?
 

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Bosch FI pump P/Ns

kwilford said:
And Otto, what is the Bosch part number?
Either Bosch P/N 0 580 464 005 (actual '75 listing and also used in '71-'75 MBs) or P/N 0 580 464 013 (used in Bitter and '77-'86 BMW i's) , they are interchangeable, so whichever is easier (cheaper) to find.

Numbers are for reference to help finding replacement only . . . if you insist on Bosch replacement, be prepared for $$$$$$!
:D
 

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Discussion Starter · #11 ·
F/I Pump

Well...I'm grateful for all the input...but what I was wondering is...does anyone know if and/or where the OEM pumps can be rebuilt. I have couple aftermarket pumps that work fine but was wondering if the original is still available or perhaps rebuildable.
 

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Re: F/I Pump

Sportwagon75 said:
Well...I'm grateful for all the input...but what I was wondering is...does anyone know if and/or where the OEM pumps can be rebuilt. I have couple aftermarket pumps that work fine but was wondering if the original is still available or perhaps rebuildable.


In a word, NO!!
:(
 

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Dan, I had to go back to "My Journal" to get the MFG and Part number of the fuel pump, I got it at Kragen's for $125, a bit pricey, but I wanted to make sure I had sufficient fuel flow and pressure for the V-6 injectors. And with the double bypass, both at the fuel rail and the pump, I would have enough fuel and pressure, plus the continual fuel flow the keep the pump cool. Here's the info: The fuel pump is a “Master Fuel Pump #E8168” HTH.

Ron
 

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I picked up a new one from opelgtsource.com about 7 months ago for $160.00. It looked just like the one KWilford posted.

Part no. 0 580 464 008

If you are looking to replace your fuel pump, you might want to check you gas tank also. I started on my fuel pump and it was ruined by rust coming through the line.

I ended up taking the tank in to be acid cleaned and epoxy coated, replaced some of the fuel line, the fuel pump, fuel filter, the fuel regulator, and I sent the injectors into RCEngineering for cleaning.

All because of some rust.

Good luck.
 

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a lot of times you can take an original Opel FI fuel pump apart clean it up and get it working again


just don't spray B-12 on the gasket (packing) don't ask how i found that out


i like the OEM pumps since you at least have a chance of getting them working again,

With the after market replacements once they get gunked up with varnish its a slim chance getting them working again.

Autozone used to sell a replacement for for the 75 FI pump for $99 it was a small FI pump with an extra clamp.


HTH
Davegt27
 

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Opel Addict Since 73
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Discussion Starter · #17 ·
F/I Pump Cleanup

Thanks Dave - I've never attempted to take one apart and clean it up...perhaps I'll give it a try. I've got two original equipment pumps with very low mileage and I hate to scrap them. Last year I took a 75 pump, capped the outlet and poured some fresh gas into the inlet and let it sit for a day or so. Then I connected the pump to a good battery and bumped it back and forth by reversing the polarity until it finally freed up and ran fine. I didn't have the same luck with the other two but maybe I'll pull 'em apart and see what can be done. With such low mileage...I'm sure they're just gummed up and would likely run well if I can free them up. I've also got a couple aftermarket pumps but they seem very noisy in comparison to the original.
 

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Re: F/I Pump Cleanup

Sportwagon75 said:
Thanks Dave - I've never attempted to take one apart and clean it up...perhaps I'll give it a try. I've got two original equipment pumps with very low mileage and I hate to scrap them. Last year I took a 75 pump, capped the outlet and poured some fresh gas into the inlet and let it sit for a day or so. Then I connected the pump to a good battery and bumped it back and forth by reversing the polarity until it finally freed up and ran fine. I didn't have the same luck with the other two but maybe I'll pull 'em apart and see what can be done. With such low mileage...I'm sure they're just gummed up and would likely run well if I can free them up. I've also got a couple aftermarket pumps but they seem very noisy in comparison to the original.
NOT if you mount one in the original pump's foam rubber sleeve (with a rubber "adapter", if necessary) and mounting bracket.
 

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Leaking fuel pump when torn down.

If you separate the Bosch FI pump drive end from the housing, be prepared for it to leak when reassembled. Those pumps have to have specific gaskets for the rebuild and need to be crimped back together. Try Brake Parts Warehouse in Torrence, CA for the rebuild information. They will rebuild and return the Opel specific plug-in Bosch FI pump if you send them one with instructions to repair and return. I've sent several for rebuild and have used one in a recent repair project. They work well and are much less expensive than a new pump. :)

Good luck.
 

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David McCollam said:
If you separate the Bosch FI pump drive end from the housing, be prepared for it to leak when reassembled. Those pumps have to have specific gaskets for the rebuild and need to be crimped back together. Try Brake Parts Warehouse in Torrence, CA for the rebuild information. They will rebuild and return the Opel specific plug-in Bosch FI pump if you send them one with instructions to repair and return. I've sent several for rebuild and have used one in a recent repair project. They work well and are much less expensive than a new pump. :)

Good luck.
Another candidate for the Reviews Section.... ;)
 
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