Vehicle & Technical > Range Rover

rrc v8 fuel

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muddyman:
Have you put a new set of plugs in it?, had a non stater a few times over the years and plugs sorted it each time, or take them out and dry and clean them if they are wet with petrol.

Range Rover Blues:
If they get wet with petrol then the EFi is doing something, try heating them under the grille (stinks).

If they come out dry then try pouring a teaspoon full of petrol intot he plenum just before you crank, see if it coughs at all.

Check the spark with a spare plug and one of the leads to the engine block or rocker cover.

Stacey:
hey all, its got to the stage where it kicks and runs on the key only. im going to try and get another ecu and see what it does. Any ideas whould be good.

Rossko:
I just spent a few hours sorting a Disco 3.9.  Had been getting tempermental, until finally a non-starter; cranked ok but not a splutter.

It had a spark, but looked a bit weak, so all the usual suspects tried - coil,amp,rotor, etc etc. Can't be the trigger pickup, meters ok and gives nice strong signal strength!!

Eventually found the trigger pickup gap was way too small, due to wear in the distributor baseplate.  My theory is that this was causing double triggering, on the lead-in and lead-out of the starwheel points.  Too quick triggering causes too-short coil pulses causes weak spark ....

Sorted that, nice fat spark, still not a cough of course!  Plugs completely choked with soft soot due to the misfires when the spark was weak. The moral there is that you can fix the original fault but still suffer from the consequences and not realise you have fixed it  :)

I also suspect the double triggering would cause the petrol system to dish out extra fuel pulses, compounding the whole issue.

cheers, Ross K

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