06-07-2018, 07:22 PM
Hello John
I have a '37 Ruby and also suffered from the same problem as you.
However, when I asked on here I was advised to try running a slightly hotter plug to try and combat this.
I did this by changing from my usual NGK B6HS to a B5HS and the difference was immediate and very satisfying in that the plugs were a nice light grey colour.
The engine certainly feels a lot happier as well.
Got to be worth a try.
Hope it helps
Graham.
I have a '37 Ruby and also suffered from the same problem as you.
However, when I asked on here I was advised to try running a slightly hotter plug to try and combat this.
I did this by changing from my usual NGK B6HS to a B5HS and the difference was immediate and very satisfying in that the plugs were a nice light grey colour.
The engine certainly feels a lot happier as well.
Got to be worth a try.
Hope it helps
Graham.