Finally got my engine running properly

Discussion in '40- & 55-Series Tech' started by offcamber40, Nov 24, 2003.

  1. offcamber40

    offcamber40

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    To all that helped me work through my running problems: Thanks! For those not following along, my brand new weber was having severe trouble on my rebuilt engine. Basically I checked everything, resealed everything, and replaced all vac lines... and it still ran horribly. I began to fear I had installed somethinginternally wrong.. as a last ditch effort, I pulled the fuel pressure regulator off that I was running (everyone says the weber needs 3 psi). Turns out that the regulator was the problem. The regulator was aparently starving the motor at WOT.. I am presently running it without one right now until I can swap an electric pump with a regulator. I think the factory pump does not work well with a inline type regulator.. BTW, too much fuel pressure, will that only erode the needle/seat over time, or does it do more damage? I called MAF about the regulator, they say that they stopped using them on all their installs because of similar running problems.

    Mike
     
  2. CruisinGA

    CruisinGA

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    You may run rich, tho I think the stock fuel pump puts out 3-4 psi so you may be alright.
     
  3. Poser

    Poser Oh...Durka Durka Durka. s-Moderator Supporting Vendor

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    I have ran a stock Toyota fuel pump on my 38mm Weber equipt 2F without a fuel regulator since '92. No carb/fuel issues here.

    -Steve
     
  4. 73lndcrsr

    73lndcrsr

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    As long as your float level is correct, you should be fine.
     
  5. toddslater

    toddslater

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    AFAIK, that is the only thing that will happen when running to much fuel pressure over time. I was wondering if you ever put an inline FP gauge in to see what pressure your mechanical was putting out ?
     
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