Vehicle & Technical > Range Rover

Plugs

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Range Rover Blues:
Firstly do a compression test!
Run some injector cleaner through the engine, this takes a couple of tankfulls!
Does it use any fluids?
Were any of the plugs mis-coloured or different from the others when you took them out?
Does it run like a cow if you disconnect the temp sender for the ECU? (ECU should think the engine is cold and 'choke' the engine).
Have you got the Haynes manual and a multi-meter?  If so you can do a basic check on the EFi system to make sure none of the sensors are toast.

Is the coil ok?

muddyweb:
Check the fuel filter too if it hasn't been done for a while.

Range Rover Blues:

--- Quote from: "muddyweb" ---Check the fuel filter too if it hasn't been done for a while.
--- End quote ---


Oh yes, forgot that one.

coffee boy:
cogs i had a simaler fluffy missfire on a 44k 3.9 it eventually got the better of me 1 day when i came 2 go to work and it wouldnt turn over, 1 cracked cylinder liner 1 more than useless v8 . hope its not the same on yrs!!!!!!!!!!!!!!!!!!!

Range Rover Blues:
And that is why I asked if you were using any fluids.  The later, larger v8s have something of a reputation for splitting around the cylinder liners, but the problem tends to show up just after you switch off, when the cylinder pressure isn't there to stop the coolant leaking over the top of the liner.  The very late models engines didn't have liners, which is how they got away with such a large overbore.

Apparently one tell-tale sign is a very clean combustion chamber, the leaking collant steam cleans the engine, you have to take the head off to see it though!

anyway, DON'T PANIC.  There are dozens of quite tedious little things that could, and probably have, gone wrong with the EFi system, whether electrical or fuel related, so start there.

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