What spark plug are you fellow Triumph Cub riders using please, is one with a projected nose better or stay with the ordinary type, if NGK should it be a 5 or 6 heat range?

I run a 5 heat range in my cub projected nose

Spark plug for a Cub - Sounds like a fair swop to me...

What spark plug are you fellow Triumph Cub riders using please, is one with a projected nose better or stay with the ordinary type, if NGK should it be a 5 or 6 heat range?

What spark plug are you fellow Triumph Cub riders using please, is one with a projected nose better or stay with the ordinary type, if NGK should it be a 5 or 6 heat range?

I use b5es

Spark plug for a Cub - Sounds like a fair swop to me...

And the same to you Sir!

I have been running it with a NGK BP6HS and lead replacer fuel additive at the recommended ratio as on the bottle but have problems with rough running due to a carbon trace forming between the tip of the electrode and earth wire on the spark plug.

I believe that the LRP additive is causing this plug fouling has anyone else had a similar problem?

Edited March 23, 201511 yr by trialsrfun

And the same to you Sir!

Sorry, couldn't resist it ! I think the joke always was a petrol cap for a Skoda... Which is where the problem is because my current work truck is a Skoda pickup.

why are you using a fuel additive.. no one else does..

Hi Jon,

Don't you mean a VW Caddy in fancy dress?

Deryk

I don't know Deryk, I thought the Caddy was the one in fancy dress... I'd rather have an 80" series one Land Rover by choice, but they are a bit more than the £500 I paid for Cloda the Skoda !

why are you using a fuel additive.. no one else does..

I am now thinking this as well so no more additive and I think no more plug issues.

By the way Jon I learnt to drive in a Series 1 Land-Rover when I was 11 or 12 years of age, it was a 1952 model with the red and yellow range change levers 1500cc side and overhead valve engine

Edited March 24, 201511 yr by trialsrfun

The additive is meant to cushion the mechanical collision between valve & seat providing the same protection to these parts that lead did when it was part of the fuel.

so i ask again.. why in a low reving low usage engine are you using it.. no one else does.

_{The additive is meant to cushion the mechanical collision between valve & seat providing the same protection to these parts that lead did when it was part of the fuel.}

_{For the above reason but from now on just fuel followed by more of the same.}

Martin Adams suggested I use Champion L86C. Used them ever since. Tried Unipart, NGK and Bosch but prefer the Champion.

Good value from the Green Spark Club Co on Ebay.

i use ngk  bp4hs on my cub and it works fine