WGB
New Member
I decided to replace the plugs in my Euro 6.9 while having a weekend fiddle and arrived home with the usual set of NGK's to find that NGK no longer manufacture their plugs with screw off mounting terminals.
It had been fitted with Bosch WR 9DCX and were gapped at 1.1mm+. Starting was OK but not inbstant like my 450 and the car ran fine.
On a drive around I scored some old stock NGK BPR6ES with screw off terminals but also found a set of Bosch WR 9DCX+ which are apparently the same as what I had but have Yttrium electrodes (I am sure with an element sounding like that they must be special in some way).
Again they are supposed to be gapped at 1.1 mm but I set them for the recommended 0.8mm - the car started instantly and I am about to take it for a drive and see what I've done.
Any comments from the experts gladly received.
Bill
It had been fitted with Bosch WR 9DCX and were gapped at 1.1mm+. Starting was OK but not inbstant like my 450 and the car ran fine.
On a drive around I scored some old stock NGK BPR6ES with screw off terminals but also found a set of Bosch WR 9DCX+ which are apparently the same as what I had but have Yttrium electrodes (I am sure with an element sounding like that they must be special in some way).
Again they are supposed to be gapped at 1.1 mm but I set them for the recommended 0.8mm - the car started instantly and I am about to take it for a drive and see what I've done.
Any comments from the experts gladly received.
Bill