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Author Topic: Spark plugs  (Read 7654 times)
Porsche Monkey
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« on: February 06, 2009, 02:33:40 PM »
Whats the part number for the NGK spark plugs that fit a 97 M900?  Trying to see if I can get a set local without having to go to the dealership. 
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Quote from: bobspapa on July 18, 2009, 03:40:31 PM
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« Reply #1 on: February 06, 2009, 02:57:54 PM »
NGK DCPR8E  part# NG4339

Most parts places stock the DCPR8E plugs, but not that part#, which has the removable terminal lug and the right size hex.  You might look here and create a shopping list: 
http://www.ca-cycleworks.com
Chris or Candice will take good care of you.
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Porsche Monkey
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« Reply #2 on: February 06, 2009, 04:48:25 PM »
Thanks Howie.  I owe you a beer.
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Quote from: bobspapa on July 18, 2009, 03:40:31 PM
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ghosthound
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« Reply #3 on: February 07, 2009, 03:42:39 AM »
speaking of plugs... whats the general replacement schedule for motorcycles?
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« Reply #4 on: February 07, 2009, 05:44:55 AM »
Ducati says every 6 & 12 or 750 & 15, depending on year.  Can you get away with a longer interval?  Probably.  But since my bike only has two...
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Porsche Monkey
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The DMFer formerly known as Ducaholic
« Reply #5 on: February 07, 2009, 11:23:03 AM »
So apparently my horizontal cylinder is running correctly but my verticle one is running very rich. The old plug was carbon fouled. These plugs only had a few thousand miles on them but were cheap champions. Is there any mixture adjustment screws that I can play with?  97 M900
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Quote from: bobspapa on July 18, 2009, 03:40:31 PM
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« Reply #6 on: February 07, 2009, 02:20:19 PM »
You can adjust idle mixture, but it won't make much of an overall difference.  Did you have a misfire or is the plug just darker?  Most people just turn the mixture screws out equally, on your bike three turns should work. The mixture screws are over the float bowl in the middle of each carb.  The idle speed screw is the bigger screw by the right carb.  the other screw is the synch screw.  Sorry, no picture.  Best would be setting mixture with an exhaust analyzer to about 4% CO.  If you don't have a tool to synch the throttle bodies after you are done I suggest you leave it until your next service or have someone with the proper equipment do it. 
« Last Edit: February 07, 2009, 02:37:41 PM by howie » Logged
Porsche Monkey
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« Reply #7 on: February 08, 2009, 01:29:49 PM »
The reason I changed the plugs was because I was having an off idle no load or low load missfire. If I'm doing around 30 or so mph it will have an intermittent miss. If I'm doing 80 it runs great. Its still doing the same thing after the new plugs. Guess ill have to look towards the plug wires and coils. There's about 35,000 miles on her.
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« Reply #8 on: February 08, 2009, 01:53:49 PM »
Sounds just like when my horizontal plug wire was grounding out.  Took a while to diagnose because there was no visable spark along the wire.  It was grounding out through the boot down in the cylinder head. 

Try wrapping the exterior of the boot in electrical tape.  This was the temporary fix the dealer used on my bike till a new plug wire came on the slow boat from Italy.

Lucky for you the vertical plug wire is cheaper than the horizontal.
« Last Edit: February 08, 2009, 01:55:45 PM by DesmoDiva » Logged
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Porsche Monkey
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« Reply #9 on: February 08, 2009, 02:26:50 PM »
Thanks Diva, I have given them a once over but I'll look at them a bit harder.
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« Reply #10 on: December 04, 2010, 11:38:20 AM »
Hey, nice thread, anyone has had experience with BOSCh spark plugs? They show a P/N XR5DC ... I still have to order or purchase at stealership here ... I had Champions as OEM and they worked great ... changed to iridium and also worked great ... until ... well, using 'good old used plugs' at time of writing ...
If any Ducati tech can share some light on the BOSCH product ... TKS!!!
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« Reply #11 on: December 04, 2010, 03:02:12 PM »
NGK DCPR8E part #NG4339, your bike will love them.  About $4 each here in the US.  If you can't find them in Panama our sponsor, California Cycleworks will be glad to send you a pair.

http://www.ca-cycleworks.com
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ducatiz
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« Reply #12 on: December 04, 2010, 03:29:30 PM »
Quote from: howie on December 04, 2010, 03:02:12 PM
NGK DCPR8E part #NG4339, your bike will love them.  About $4 each here in the US.  If you can't find them in Panama our sponsor, California Cycleworks will be glad to send you a pair.

http://www.ca-cycleworks.com

derby

http://www.ducatimonsterforum.org/index.php?topic=18886.msg337059#msg337059
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Check out my oil filter forensics thread!                     Offended? Click here
"Yelling out of cars, turning your speakers out the window to blast your music onto the street, setting off M-80 firecrackers, firing automatic weapons into the air—these are all well and good. But none of them create a merry atmosphere of insouciance and bonhomie quite like a revving motorcycle.
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DILLIGAF
« Reply #13 on: December 04, 2010, 03:34:38 PM »
Quote from: ducatiz on December 04, 2010, 03:29:30 PM
derby

http://www.ducatimonsterforum.org/index.php?topic=18886.msg337059#msg337059

you crack me up.

I'm going to your tank thread and derby you for every time you had to repeat yourself. laughingdp laughingdp
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« Reply #14 on: December 04, 2010, 03:51:38 PM »
Quote from: humorless dp on December 04, 2010, 03:34:38 PM
you crack me up.

I'm going to your tank thread and derby you for every time you had to repeat yourself. laughingdp laughingdp

sugarpuss, if you have the time to do that, be my guest...

i was just teasing howie, i am sure he'll laugh out loud.
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Check out my oil filter forensics thread!                     Offended? Click here
"Yelling out of cars, turning your speakers out the window to blast your music onto the street, setting off M-80 firecrackers, firing automatic weapons into the air—these are all well and good. But none of them create a merry atmosphere of insouciance and bonhomie quite like a revving motorcycle.
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