Air filter / spark plugs

[ELIMINATOR]

Has anyone actually ever changed these at the suggested service intervals and noticed a difference?

I just changed my air filter, OK it was grubby, but will the new one improve my mpg? No, of course it won't. Unless the old air filter is physically damaged and allowing debris straight into the engine, is it worth delaying the change until there is a drop in mpg? Ok it isn't expensive but you get my point.

Same goes with spark plugs really, OK they can break down,but how often does this happen. I suppose it is regarded as preventive maintenance.

I have run the bike on fully synthetic for the first time, just about to change the oil at 10,000 miles.

Comments please.

 

[Butchersdog]

I certainly would not have bothered with fully synthetic but I suggest you are winding us up

Put Splitfire plugs in mine, ticks over and pulls better IMO

 

[Stewart H]

I think the service interval for the plugs is in the order of 24000, they come in the service kits so get replaced sooner.
the air filter interval is 18000 miles, if its minging before that then change it, 10,000 mile oils, in the company van thats ok, my bike gets good cheap dino oil every 3000.
Looks to me like we overmaintain these toys

Stewart

 

[King Rat]

You cannot over maintain an engine! Like you, I work on the principle that oil and filters are cheap (and easy to change) whilst engine internals are expensive (and awkward to change)....I would rather stick an extra £10 worth of oil in over the period than have to fork out for bearings.rings - even just gaskets is bad enough.

My air head 100RS ran sweetly for 337,000 miles....and still going strong with th enew owner. I had a Morini that I ut 185,000 miles on, it only needed one gearbox bearing and front exhaust valve guide in all those miles, other than consumables...still on original clutch too, both of them.

Change your oil and filters frequently and sleep peacefully at night.

By the way, one day when we were in the pub, a long time ago now. We got round ot the air filter thing, because people often would say, to save a few bob, don't bother changing the air filter, it's not important. So, we sat down and calculated a 1 litre bike, doing a steady 70 (5000 rpm) giving 40 mpg = 5 litres fuel.

In that hour, the engine did 5000x 60 revs = 30,000 revs. so had a swept volume of 30,000 litres.
In that same time it used 5 litres of fuel....which means it used 29,995 litres of air. And you think the air filter is not important...but you fiddle with inline fuel filters and stuff

AIR FILTER WILL TRANSFORM HOW YOUR ENGINE PERFORMS. Let it breathe nice fresh air.

In truth, clean oil, clean air, clean fuel and a nice fat spark are all as important, so why limit any of them for the sake of a couple of squids?

That's my very simplistic take on things anyway. Now tyres, that is an altogether different matter...use a bit of gaffer tape to keep the wind in if you can, so as ot eek out a few more miles. You can actually do about 500 miles on the canvass you know!

PS - OK it should have been 10 litres of fuel.....so what!