EA82 mpfi tip on spark plugs

[steptoe]

Thought I'd better share a tip from nncoolg that some may not know with spark plugs for EA82T and NA mpfi. I have always used NGK spark plugs after discovering their design ran cleaner than some souced from a German manufacturer, so speak NGK.

I have always bought BP6ES or colder BP7ES and their 1.1mm gap mates the BP6ES-11

Also struggled getting them in and out due to my 13/16" spark plug socket binding against the head casting until I bought a thin walled socket sold more as a motorbike tool.

Better still is to use spark plugs with the smaller hex size rated as 14mm - the 13/16" ones are rated as 18mm. Bloody obvious choice to those aware you can make some changes to the plugs dimensions without altering the important spec stuff. I wasn't.

NGK for eg with 18mm are BP6ES, BPR6ES-11, the smaller hex plug part number is simply found with a BCP6ES-11 where the 5/8" plug socket fts in without any clearance issues. I got some of the more common BCPR6ES-11 today. Not sure if simpler plugs are available easily or at all, BCP6ES may not exist.

Happy days

[87rxturbo]

Awesome tip there Steptoe,you must have known my RX has been misfiring the last couple of weeks and needs new sparkies.I have a spare MPFI engine in my touring wagon i was tempted to borrow the plugs out of ,but after reading this i think i will avoid that clearance issue and have a look for the smaller hex size versions,thanks again.

[Gannon]

EJ20 and 25 DOHC engines use these smaller hex spark plugs