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post #1 of (permalink) Old 05-21-2000, 08:19 PM
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oil from fuel pump

i noticed a third arm on fuel pump with no hose on it very much coated with oil and oil on top of tranny is there supposed to be a hose or is fuel pump going bad? 88 sammy

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post #2 of (permalink) Old 05-21-2000, 08:36 PM
 
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Re: oil from fuel pump

If the arm on the pump is leaking oil, the diaphragm in the fuel pump is bad. Just to make sure,you could zip tie a plastic drink bottle under the arm and drive it around awhile and see if any oil has accumulated in the bottle. The oil on the top of the tranny could also be coming from the distributor mounting point. I believe it is mounted to the engine using an O-ring for a seal. Mine was leaking a little and it ended up that the mounting bolts for the disty were loose. Hope this helps.

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post #3 of (permalink) Old 05-22-2000, 10:38 AM
 
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Re: oil from fuel pump

I just went through this last week. Replace that sucker. It also might be dumping fuel into your engine. I takes 20 minutes (I'm slow) to replace it. That 3rd arm is a vent tube. You'll be glad you did.

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post #4 of (permalink) Old 05-22-2000, 12:08 PM
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Re: oil from fuel pump

My fuel pump did exactly the same and made a real mess.

Solution- New fuel pump- $12
- 25 mins fix
- simple green and rags for clean up




post #5 of (permalink) Old 05-22-2000, 12:32 PM
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Re: oil from fuel pump

Bigbear mentioned that it might also be dumping fuel into the engine. Well, my tranny is covered in oil, and my weber runs rich. I have been trying everything to lean it out, but nothing works. Could this be my problem??

Thanks guys.

Marcus

post #6 of (permalink) Old 05-22-2000, 07:18 PM
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Re: oil from fuel pump

Yes and No. Yes, a broken diaphram could be the oil leak. No, can't see how it could relate to a rich weber.

post #7 of (permalink) Old 05-23-2000, 01:23 AM
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Re: oil from fuel pump

MUD-BOY

Where are you getting new fuel pumps for $12 dollars?

Dave

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post #8 of (permalink) Old 05-23-2000, 10:53 AM
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Re: oil from fuel pump

Oct 98 got it from Autozone in Flagstaff. I think it was $12 (I even remarked to the woman behind the counter how cheap it was!) but definitely less than $15!!

I am moving down to Flagstaff from Grand canyon (wife and I just bought a house) so I will be 1.5 hours coser to any Zuking in your or Deer Valley road Zuk guys

post #9 of (permalink) Old 05-23-2000, 03:00 PM
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Re: oil from fuel pump

I went out to check prices yesterday and the cheapest I could find one for was $60. For twelve bucks, you should buy a bunch and sell them yourself. Thanks for the help, I think that the fuel pump is part of the problem, I have been trying to find out where all the oil has been coming from for a while. I could imagine how oil got into some of the places it did before you guys enlightened me.

Marcus

post #10 of (permalink) Old 05-24-2000, 10:00 AM
 
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Re: oil from fuel pump

My 88 Sammy fuel pump did the exact same thing two years ago (oil leaking from
bottom vent tube which is used to provide air to the pump's diaphragm).
I bought a new pump for $55 and installed it in about twenty minutes. Perfect ever since!
Since it is definitely possible for fuel to enter a bad pump seal and contaminate your engine
oil, make sure you change your oil after installing new pump!

LeeClark
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