Improving Fuel Flow

Improving Fuel Flow

If your classic is having difficulty drawing fuel, it can manifest in symptoms from not starting to regular cutting out particularly under load as fuel runs out in the carburettor float. If you suspect this to be the case, there are a few things you can check.

Flakes of rust or even a disintegrated gauze filter can be sucked up the pipe, causing a blockage at a corner or kink. If you suspect the blockage is in the main supply pipe from tank to the engine compartment, renew it – it’s likely to be corroded. If the riser pipe inside the tank is the problem, this can be more tricky. Some simply unscrew or unclip from the top of the tank, but others are soldered in position. In the latter case, the tank will need specialist attention and it may be cheaper to simply obtain another one. There’s usually some method of getting at the pickup pipe’s gaze filter – often the drain plug is situated directly below the end of the pipe. This may provide a point of access for probing with wire or an air-line. Incidentally, also check that a jack hasn’t been placed under the front-to-back metal pipe, crushing it flat.

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4 Responses to “Improving Fuel Flow”

  1. Francis Keogh

    Any tips on Fiat 130

  2. Philip Austin

    My 10hp Ford CX can be hard to start, due to fuel, I have notice that the fuel is not very atomised and is more like a spray, is this right?

  3. David Brisland

    Triumph stag starts and runs for a while a (20mins) and then seems to not be getting fuel

  4. jake

    In my younger days I fitted an inline fuel filter after the fuel pump on my ford Anglia 997cc not realizing that the fuel pump has a filter in it. I have starting problems with the car. Could this extra filter add to restricting the fuel flow? Or should I just leave it in place??? Thanks