Standard Spark Plugs

[Speedy1959]

I know what the owners manual says..
But I have difficulty in believing that a low revving / Low stress engine need a change of plugs as often as it suggests!!
My Honda CB1300 wanted a plug change every 24,000 miles if I remember correctly..

How often do you lot change the plugs?
I am talking standard NGK (NOT irridium)

S.

[seth]

I change ours every couple of years so probably 15-20k miles
Standard ones have never failed and probably don't even need changing when I change them .

[Hooli]

I took them out at the recommended intervals, checked the gap that never needed adjusting, gave them a rub with a wire brush & put them back. They'll do fifty thousand miles easy enough, but by then the plug was so rusty it affected the spark. The bit inside the engine was still ok.

[GSXKING]

I'd have to concur 
I went down the road of iridium plugs $25/AUS each, they lasted same time & made no difference to performance or fuel efficiency 🥴🥴
Standard plugs are $9 from memory 😪

[Eric GSX1400K3]

I've owned my 1402 for just under 6 years now (just checked, I bought it on 18.11.2016) and I think I've replaced the plugs once. 48000km on the clock and I've put 10,000 of those on. 

[Speedy1959]

Thank you all for confirming my thoughts..
I shall do as you have done re plugs.
Thanks again,

S.

[Tony Nitrous]

Same as most folk, every few years or when checked at a major service.

Tried Iridium on other big bikes, on the dyno and drag strip, no gains, and traditional plugs are cheap enough and last long enough that they rarely get a 2nd thought.

[T 24]

I use standard NGK CR8EK plugs and change them after 25 000 to 35 000 km.

[grog]

Yeah, mine has spark plugs. Next time tank is off ill have a look at them. Not something that really worries me, ask me how many spares i carried back in old 2 stroke days, just doesnt apply with 14.

[Eric GSX1400K3]

My K1300GT runs iridium plugs as standard, supposed to last 100,000km.  Bikes at 97,000km, guess I'll find out soon enough.  Only reason they use those coz it's a right pita to get access to them and you need a special tool to pull the coil packs off as otherwise you break 'em.