[Josh Prior]

Hello Everyone,
A month ago my Range Rover 3.5L V8 started losing power completely – I would be able to drive about 100m and then it would lose power (revs drop) and eventually stall when I’m pressing down on the accelerator (It sounds like the Carbs are sucking in too much air). If I let go of the accelerator when I feel it losing power, then after a few seconds the revs would go back up to normal and wouldn’t stall – I can then drive another 100m and same thing again.
I have changed the Fuel Pump, Fuel Filter, Oil Filter, Oil, HT Leads, Ignition Coil, Ignition Module, Distributor, Distributor Cap & Rotor Arm, Thermostat and have rebuilt the Carbs.
I read that this may be down to the cam, followers and chain?

Josh Prior

 

[rangerovering]

Hi Josh,

Are these SU or Stromberg carbs? Check there is oil in both dashpots (use 15-40 engine oil) and that if its a Stromberg carb that the rubber diaphragm hasdn't split or got a hole in it. Also check both dashpots move smoothly up and down in the top cover for the carb. Have you had a proper tune up, timing, carb balance, mixture and throttle linkage set correctly?

Cheers

 

[JS5D]

Assuming that the car has good power initially, I doubt it would the cam. A worn cam would cause performance issues from startup since this is mechanical wear not affected by heating up of the engine.

I would agree the issue sound like a carb issue. As the engine warms up the mixture changes which affects the running.

You said you rebuild the carbs, did you sent them away or taken them apart and changed gaskets etc. Can you get some second hand ones to change out?