If you suspect that the culpret may be water, not dirt, you can clear it
by removing air cleaners, revving to about 3M then capping the carb with
the palm of your hand. This will suck in whatever is in the float bowl.
Not for dirt.....
On Wed, 16 Jul 1997 16:15:14 -0400 (EDT) Arthur Pfenninger
<ch155@FreeNet.Buffalo.EDU> writes:
> Jason you didn't mention the fuel filter did you change it?
>This
>has all the classic signs. You would notice it especially going up
>hills.
>When you shut off the car the dirt settles and allows gas through.
>Temperature would have no bearing on the problem. Not sure what you
>are
>driving you may have 2 filters 1 in the pump and an external one.
>Since
>you have a new pump I would look for the external one. As you can tell
>by
>a previous thread it can be any where. If you have a B then to hook up
>another ground just connect the allagator clip to the black wire and
>the
>other end to ground such as the rear spring bolt. You may also find
>that
>you have dirt in the carb that is blocking the needle. The only way to
>check this out is to take the carbs apart.
>...Art
>
>
>On Wed, 16 Jul 1997, Jason F. Dutt wrote:
>
>> I've sent a message about this problem before, and got some good
>feedback
>> that what appreciated. Unfortunately, I'm out of ideas, and the
>problem
>> still isn't fixed.
>>
>> To sum up the situation:
>>
>> Turn the car on, fuel pump runs, car starts. Car runs for approx.
>3-5
>> minutes, then it behaves as if someone is literally squeezing the
>fuel
>> line. It sputters and coughs, won't idle, but will respond (however
>> pathetically) if the accelerator is depressed. Soon after, the
>accelerator
>> will have little to no effect, and the car dies. I can then turn
>the car
>> off, then on, and the fuel pump runs like mad (every time), filling
>up the
>> float bowls. The bowls must be empty at this point, because the
>pump runs
>> for quite a while. I can then start the car again. It will either
>keep
>> running indefinately, or die again in 3-5 minutes.
>>
>> Some more info:
>>
>> 1) It is intermittent. If the challenge surfaces, it will continue
>until
>> the car has sat for a while, and then may or may not happen again.
>> 2) It doesn't seem to be affected by temperature, as the car has
>done this
>> when cold or hot.
>> 3) The most the car has run since this has started is about two
>days, with
>> stops (turning the car off for a while, and then starting it and
>going
>> again).
>>
>> Things I have already checked:
>>
>> 1) Float / Float needle. They didn't seemed to be gummed up, but I
>> rebuilt the carbs anyway (doesn't hurt, as they were pretty dirty),
>and put
>> in a new grose jet.
>> 2) Fuel tank venthilation. I'm not sure if I did this right, so
>tell me
>> if there's a better way. I disconnected the hoses from the carbs
>that lead
>> to the carbon canister, and took off the gas cap. The car still
>died.
>> 3) Power supply to the fuel pump. The pump is a newly refurbished
>SU
>> AUF300 model. I checked the leads and supply with a voltmeter. The
>> battery was old and kind of weak, so I replaced it.
>> 4) Fuel line blockage. I disconnected the line at the carbs.
>Turned on
>> the key, pump operated. Blocked the flow with my thumb, the pump
>stopped,
>> and resumed when I released it.
>>
>> I'm plumb out of ideas. I want to say its the fuel pump, but I've
>had that
>> challenge before (hence the new one), and the symptoms were
>different. As
>> I said before, the pump runs EVERY time I turn the key on after the
>car has
>> died.
>>
>> Help please!
>>
>> Regards,
>>
>> J
>>
>
>
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