Another spark plug question 4.3

[vince72801]

Hope someone can help, I thought I hd this stright, but when I pulled out a 41-93xx can remember the rest, see picture.

The spark arrestor states MR43LTS, a bought the NGK BPR6ES. My serial number is 0M099909, carb version, notice the difference in lenght. Should I get the AC, order MR43LTS or can I use the NGK.

Also what sysmtoms would I see using the AC plug if its the incorrect one.




http://i212.photobucket.com/albums/...Chaparral/spark plug/DSCN6402_zps81889b4b.jpg


Thanks!

 

[Don S]

Re: Another spark plug question 4.3

You need a BPR6EFS, your plug number is missing the F in it.

 

[vince72801]

Re: Another spark plug question 4.3

Thanks Don!!

 

[nofuss]

Re: Another spark plug question 4.3

my engine number is OL**** and i was dead in the water with Champion plugs, I changed to NGK and was on plane without even using the Tabs. if im not mistaken all the engines in this range except the multiport injection ones have the NGK as the recommended plug BPR6EFS. I dont know much about AC but NGKs work

also there is the same plug numbers but with the R missing if u get that it will work in the engine but give a lot of trouble with your onboard electronics. so look out for them recommending that at your supplier.

hope this helps

No Fuss
twin Merc 4.3 EFI in regal 2760