The car is a Mk1 Golf (1993, 1.8lt, mechanical injection).
I was driving up a medium incline and suddenly my car starting sputtering and I lost acceleration. I pulled over and started the engine again to listen. I checked the air intake and boot for leaks, there were none. Fuses were fine. Fuel levels were OK - about 1/2 a tank. Tempreture was fine - its warm here and I had already been driving fro about 30 mins. There did seem to be a distinct whining coming from the fuel pump though. Every time I started the engine it would run for a little bit then sputter out.
I rang a friend who brought tools but when he arrived and started the car again it was fine. I was able to drive home (5 mins) with no issues. The fuel pump even sounded fine again.
The plugs and fuel filter are only about 6 months old, so I dont think its them.
Would anyone know what could have caused this?
A theory I have is that maybe some crap in the fuel tank got caught in the lifer pump filter and temporarily blocked the fuel lines. Possible?