Spark Plugs.

[Jammy-G]

Hello.

Having a few problems with the spark plugs on my bike. I bought the bike 2 weeks ago, with a new working plug in. After a week, it stopped working. A new plug was then fitted.. 3 days after it was fitted, that one stopped working. I have not got another in which has fixed my problem of it cutting out and not starting etc, but what is causing them to go so fast?

After a new plug is fitted, is it necessary to give the bike a good run (30 min ride) or something? I have only been doing very short journeys as *cough* I still need tax.

Hope to hear from someone soon.

James

[Kickstart]

Hi

Short journies will kill spark plugs more quickly on 2 strokes. Same for using the choke for too long, etc.

However are you using the correct grade of spark plug? The number is the heat range on an NGK plug, and a higher number is for a colder plug. Colder plugs will foul up more easily at low revs (while warmer plugs will start to over heat if the bike is thrashed while using them).

All the best

Keith
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[Jammy-G]

I'm using the one advised by my handbook.

At the moment, I am using one that is used for the lawnmower

It works fine, wont do any damage will it?

[Kickstart]

Hi

Possibly. Thrash a bike with too hot a grade spark plug in it (and the lawn mower plug is bound to be a fair amount hotter grade) and you stand a reasonable chance of causing detonation, possibly burning a hole in the piston.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing