Vehicle & Technical > Range Rover

'Missing a beat' every 6 or 7 seconds

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Merlin:
Thanks, am hoping to buy a Workshop Manuel off "E" bay so at least Ii'l know where the pump is, I know most things about Series Motors but minus things about Rangies.---Cogs

Range Rover Blues:
Sorry, meant to tell you.  The fuel pump is in the top of the tank and it's a tank out job with the 3.5 EFi.  The later 3.9 hot wire system has an access panel under the boot floor.  Lucky so and so's.
Our 88 model was built as a 3.5 but has the later hot-wire EFi and a 3.9 lump retro fitted.  It did run smoothly when we bought it!
I am told the early flapper EFi is a cow if anything is slightly wrong.
Have you checked for air leaks in the inlet side?  check ALL the vacuum pipes, servo and that funny little pipe that goes into the heating system to close the recirc' valve.
Also check the flame trap doesn't need cleaning and there's no oil in the bottom of the plenum.
Also try a bottle of injector cleaner, follow the instructions.  Made a huge difference to the Mondeo!

Merlin:
Done the In jector bit, misfire still there so will work my way through the rest this week. Plug leads have been suggested as well, this mis-fire is starting to get expensive!!!! :(  :(

Range Rover Blues:
If it's the leads then start by checking they are layed-out properly.  If they are laced up like knitting this, I am told, can cause cross-firing or arcing.  Honestly though if this were the case I'd fit new leads anyway, but it cost nowt to check.

Merlin:
And the saga goes on!!! All the electrical side has been done (under the bonnet) & still the intermitant mis-fire.
More on that--
1) It seems to be only after the motor is fully warmed up
2) It comes on AFTER going round a 90 left/right turn ( this may be in my head but am sure I am right)

Possibly fuel filter?
Do you have to de-pressurise the system to replace the filter(s), if so how & how do you re-pressurise it?
Where are the filters you need to replace.

Arn,t workshop manuels bloo-y expensive!!!, looking for one on "E" bay but no luck yet.  Are Haynes any good for a 1990 3.9efi ?, or is that a stupid question.-- :(  :( --Tony

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