[T2] Power loss in 4th

[T2] Power loss in 4th

Avocado Tom Tarka avocadotom at gmail.com
Mon Oct 12 11:13:27 MST 2015


Dave,

Yup!  Replaced that line. 

Choke appears to be fully open when warmed up as well.

Cheers,
    Tom

----
 "We are MoTown. We are professionals. We're here to get the job done."

> On Oct 12, 2015, at 1:39 PM, Dave Gillingham <dave at coronado-realty.com> wrote:
> 
> Just a WAG:  Did you replace the fuel line between the pump and carb?  Choke fully open when hot?
> 
> Sent from my iPhone
> 
>> On Oct 12, 2015, at 10:25 AM, Avocado Tom Tarka <avocadotom at gmail.com> wrote:
>> 
>> 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
>> 
>> ----
>> "We ----
>> "We are MoTown. We are professionals. We're here to get the job done."
>> 
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