Vehicle & Technical > Range Rover

Plugs

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Merlin:
Have just got a box of NGK - BPR6ES spark plugs.  Are these GOOD for a 3.9efi engine?
PS-No snow here, not a cloud in the sky, cold though.
Cogs

hobbit:
According to my oracle
Champion RN11YCC
Autolite APP64
Beru 14-8DU
Bosch W8dc
Champion RN11YCC
NGK BPR6E-VG

Are whats listed, but I dont believe these are the only ones, so sorry not much use to you, some times the lists are only the recommended ones, but not necessarily the compatible ones

Range Rover Blues:
BPR6ES should be fine, I had a set of BP6ES untill recently, they were recomended for the 3.9 running on autogas particularly and have been good (although our car doesn't run too well on petrol, whatever plugs I fit).

I prefer not to fit resisted plugs to the Rover V8 but it makes little difference on Petrol.

The plugs I am not running are grade 7 Iridium that I bought from Chris Pefect. (BPR7EIR or something).

Hope this helps

Merlin:
Thanks for the info. folks, I have an occasional "fluffyness" when warmed up, not a mis-fire as such but is proving a bug--r to find. Wouldn't want to fit a new set of the wrong plugs in case it made matters worse.  Will fit tomorrow if weather permits & keep you posted.--Cogs

Merlin:
Now where to go !!!, New plug leads (genuine parts), NEW plugs(as above),NEW dizzy cap(Genuine part)-it was TWICE as dear as a Britpart one & we couldn't see ANY differences.
Still got my mis-fire when warmed up & under power.
Am going to take it into my local independant L/R place next week as Iv'e run out of idea's what to do/try.-GRRRRR :(  :(  :( -£££££!!-Cogs

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