Novarossi glow plug in Savage F4.6, what length glowplugs for F4.6?

[FreezeCtrl]

I've been running OS 7 in my Savage and I think the plug is dying, can't open the throttle at all without it immediately flaming out

I'll try to tune it up more tomorrow but I also wanna try a new glow plug

I have some C5S and C6S from another bundle I bought, would these work in the F4.6? The threads are pretty long, like 6

I can't tell how long the original glow plugs that HPI sells are

 

[Wolfie1]

Take the old 1 out and compare the lengths then you will know

 

[lokky]

Usually are short plugs like os n8

 

[FreezeCtrl]

Take the old 1 out and compare the lengths then you will know

It came with an OS 8, which I don't think is the actual length of it