Thread: Fuel pump...or fuel tank...or??

Sorry to re-boot this, but with the long weekend coming up (in WA), I thought I'd start doing some work on chasing this issue down - or at least providing info for the workshop to warrant the pump.

One question that keeps nagging me, if it were an electrical issue, would it be unreasonable to think the problem would be there all the time, rather than when the tank gets down to 1/4?

Similarly, wouldn't a physical blockage of the screen/intake (as Ian experienced), be present whether I had 135 litres in or 13 litres.

1/4 tank is the point when the issue becomes apparent - from there up to full, there is no cavitation and no dip & recover of the revs after starting (as mentioned, this is exacerbated by high ambient temps). I have no idea what 1/4 relates to in litres in the Long Ranger as the gauge reads "full" for 400kms before moving

Of course there is the possibility I have received two dud pumps in a row - but in reality how likely is that?
Cheers
Mike

Originally Posted by Tombie

Correct! The steel tank resonate when running low - Lara made noise from the day the tank was fitted and was on the original pump when sold 7 years later and it whined when down to 1/4 or less every tank.

Hey Tombie! Long time no speak
Yes, I wondered if the "noise" was associated with the design of the tank/change in material (plastic to metal), and yours and Roger's experience seems to suggest this is part of what is happening.

But at 1/4 and below, in cooler temps I will get a lot of noise from the pump but have 'learned' to allow a full prime before turning the key. Otherwise I may get a start followed by a dip (almost stall) and then recovery as the system primes fully. In hot weather if I don't follow this procedure, I will get a 'no start' and have to go to initiate the 'dry tank' recovery via the throttle pedal (5 pumps etc).

I did change the copper injector washers (as Fatman mentions), but will have to check when...maybe a year or two ago? So perhaps I should start there and 'assume' the new pump is ok until other variables are eliminated. However I don't want to run out of the workshop's warranty period. It just doesn't feel like a blockage or electrical problem, but that's a gut feeling and not based on empirical evidence...
Cheers
Mike