Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > 998 / 996 / 916 / 748 > Overlarge Spark Plug Gap

[zhed44]

Just a quickie.

I changed the plugs today and on getting the old ones out, I noticed that the last person who serviced the bike (before I owned it, I hasten to add) hadn't gapped the plugs - they'd left them with the "out of the box" gap ie: around 1mm+.

What would be the effects of an oversize plug gap?

I gapped the new ones to 0.5 - 0.6mm as per Haynes.

Thanks

[Edited on 3-5-2006 by zhed44]

[Ains.]

The cylinder would fire slightly later than it should.

Ains.

[Shazaam!]

The larger the gap, the better the throttle response. But, too large a gap will result in more misfires.

http://www.ducatisportingclub.com/xm...0432#pid301446

[Ains.]

Originally posted by Shazaam!
The larger the gap, the better the throttle response. But, too large a gap will result in more misfires.

http://www.ducatisportingclub.com/xm...0432#pid301446

Due to more fuel/air mix between the gap.

Ains.

[Mr. R]

Shazaam!
Your post are always eDUCATIcational please have a look at the 851/888 board re: airbox i think Neil 851 could benefit from some of your knowledge.

Steve