[T2] Power loss in 4th

[Robert Mann]

Martin
          Is it possible that air can't leak fast enough into the petrol
tank to replace the rapid 😄 draining of the fuel?
          To test this hypothesis, you could ease the filler cap so that it
isn't clamped (but is till moored, not to drop off 😀)

Good luck

R

On Tue, Oct 13, 2015 at 11:33 AM, Pat Spragge/RFAN <Pat.Spragge at rfan.com>
wrote:

> Tom,
>
> Did the bus exhibit these same symptoms prior to having the tank cleaned
> and changing the fuel pump?  Is that why you had this work performed?
>
> Pat
>
>
>
> From:   Avocado Tom Tarka <avocadotom at gmail.com>
> To:     "<type2 at type2.com>" <type2 at type2.com>
> Date:   10/12/2015 10:24 AM
> Subject:        [T2] Power loss in 4th
> Sent by:        "type2" <type2-bounces at type2.com>
>
>
>
> Hi volks,
>
> I'm encountering some power loss issues which I'm hoping someone can
> provide insights on.  After about 30 minutes of driving and when my bus is
> fully warmed up, I'm experiencing power loss and sputtering.
>
> Data points:
> - only happens when going uphill, particularly with steep grades
> - happens primarily in 4th but may just be RPM related: it seems to occur
> below ~2500 rpm (just noticed it in 3rd)
> - new fuel pump
> - hear ticking sound from carb after stopping to cool down (like a wind-up
> kitchen timer ticks)
> - watched fuel getting sucked through pre-carb filter after stopping to
> cool down
> - fuel pressure verified to be 2.5 to 3 psi after installing new pump
> (IIRC)
>
> Bus also seems to be trending towards overheating when the power loss
> occurs. Not sure if that's related.
>
> Specs:
>
> 1971 bus
> 1600 SP engine
> Non-doghouse oil cooler
> 009 and 30-pict 2
>
> I'm guessing it's the fuel pump, or float, as the gas tank was recently
> cleaned, but I'm at my wits end.
>
> Any thoughts?
>
> Thanks!
>    Tom
>
> ----
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