It may be a bit late for this person to be helpful, but it may be useful for others. A dirty carby or fuel filter, or other blockages in the fuel system, quite often are intermittent, and can come & go as described. The foreign material builds up at the filter or carby jet, until it impedes the flow of fuel. When the motor or pump is stopped, the material can disperse to a certain degree, & allow the car to run at various degrees of performance, until it constricts the fuel flow again.
27th Oct 2012, 17:54
It may be a bit late for this person to be helpful, but it may be useful for others. A dirty carby or fuel filter, or other blockages in the fuel system, quite often are intermittent, and can come & go as described. The foreign material builds up at the filter or carby jet, until it impedes the flow of fuel. When the motor or pump is stopped, the material can disperse to a certain degree, & allow the car to run at various degrees of performance, until it constricts the fuel flow again.