Results 1 to 2 of 2

Thread: MFI and unleaded fuel. Problem?

  1. #1

    MFI and unleaded fuel. Problem?

    I'm sure I'm not the first to be concerned about the lack of lead in the fuel and how it may affect the service life of the MFI pump - does it matter? Has anyone logged enough miles/hours on an MFI car running unleaded to have symptoms of premature pump wear? If this is a concern, is there a preferred fuel additive? Since I have MFI-on-the-brain lately, I thought I'd throw this out.
    Leaf green 72T, SOLD!
    Gone back to my MoPar roots!

  2. #2
    I think this is a subjective question at best...but like previous worries about valve seats with unleaded, I'm hoping fears of MFI pumps not getting enough gas lube are unfounded. BUT...with many fuels now containing the known solvent of alcohol? I dunno. I do add Marvel Mystery Oil to the tank once in a while...with absolutely no clue whether or not it does any good.
    Paul D. Early S Registry #8 - Cyclops Minister of West Coast Affairs
    "Now, to put a water-cooled engine in the rear and to have the radiator in the front, that's not very intelligent." -Ferry Porsche (PANO, Oct. 1973)

Similar Threads

  1. Can anything else look like a fuel surge problem?
    By obrut in forum Technical Info
    Replies: 15
    Last Post: 09-19-2013, 10:37 PM
  2. Unleaded Fuel Additive
    By shipard in forum Technical Info
    Replies: 20
    Last Post: 06-27-2011, 10:23 AM
  3. fuel level indicator problem
    By Neil '67 911S in forum Technical Info
    Replies: 7
    Last Post: 07-19-2009, 05:37 PM
  4. 1971 911S fuel problem?
    By go fstr in forum Technical Info
    Replies: 3
    Last Post: 11-20-2006, 05:42 AM
  5. Fuel Delivery Problem?
    By RMartin in forum Technical Info
    Replies: 1
    Last Post: 06-06-2005, 07:33 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Message Board Disclaimer and Terms of Use
This is a public forum. Messages posted here can be viewed by the public. The Early 911S Registry is not responsible for messages posted in its online forums, and any message will express the views of the author and not the Early 911S Registry. Use of online forums shall constitute the agreement of the user not to post anything of religious or political content, false and defamatory, inaccurate, abusive, vulgar, hateful, harassing, obscene, profane, sexually oriented, threatening, invasive of a person's privacy, or otherwise to violate the law and the further agreement of the user to be solely responsible for and hold the Early 911S Registry harmless in the event of any claim based on their message. Any viewer who finds a message objectionable should contact us immediately by email. The Early 911S Registry has the ability to remove objectionable messages and we will make every effort to do so, within a reasonable time frame, if we determine that removal is necessary.