Need warmer spark plugs for my 620??

[mr.freezer]

Hi guys... I have M620 2002, termignoni exhaust, pipercross air filter, OEM ECU... starting is great, riding when it is not very warm is great too, but when I start to push and bike got warmer idle is not very smooth. I think it misfires sometimes. I have Denso xu24epr plugs... Do you think I need warmer plugs?? I have som NGK dcpr9e at home. should I try those?? Or is there any other reason to missfire when hot??

[Howie]

Before going to a hotter plug you want to check your present plug color.  Then make sure all else is correct, fuel trim, valve clearance, TPS etc.  I would also try the proper DCPR8E plugs first since it covers both the Champions recommended by Ducati.  A plug to hot can cause engine damage.

[mr.freezer]

thanks a lot...present plugs are brickcolor... so I think other things are OK...

[DarkMonster620]

+1 on what howie said and USE the OEM plugs DCPR8E, by your modifications your trim should be set up at around 23~24 and CO should measure between 3.5%~4.5% . . .

If you can, also check/set TPS . . .

[mr.freezer]

TPS reset done... how can I set up trim??

[koko64]

The dcpr9e are colder. Dont be fooled by the numbering systems as they are not universal. For NGK the higher the number the colder; for Champion the higher the number the hotter. Denso make great plugs, but I have had trouble getting the correct match to the oem plugs. People have damaged engines getting confused by the different systems. As was suggested, use the oem plug.

[DarkMonster620]

TPS reset done... how can I set up trim??

Either at dealer or if you have access to a shop with a diagnostic tool that wirks with Magnetti Marelli IAW59M ECU . . .

I do not know where you are located so I cannot know of any shops in the area . . .

For that, I inist that you either instal the NGK DCPR8E  plug or the Champion RA4HC . . .  and it is even better if you have a gas analyzer

[koko64]

Let us know how you go.

[mr.freezer]

I have ducatidiag... will try new plugs

[koko64]