[Ducati] 749 sputters and coughs passing from 4500-6800 rpm

[Ronald Betts]

The TPS is a voltage varying device. It has a supply voltage, generally .5 
to 1.0 volts,and reference return back to the ECU.As far as the plugs are 
concerned , I throw away the Champions and run NGK or ND u-tip or u-groove 
in just about everything I own that is gas powered. One thing you might try 
is to clean the plugs, let the bike warm up and go for a pass. When it 
starts to cough, stop and pull the plug that is easiest to get to and look 
to see if it's black and sooty or light and dry. At least you'll get an idea 
if it's fuel or ignition related. Let us know what you find



Peace...Ron"Desmohead"Betts 95 900 SP
I've learned that I don't suffer from insanity, I enjoy it!





>From: "Wendell S. Martin" <WENDELL at amcoprod.com>
>Reply-To: Ducati Owners Group <ducati at ducati.net>
>To: <ducati at ducati.net>
>Subject: [Ducati] 749 sputters and coughs passing from 4500-6800 rpm
>Date: Tue, 2 Jan 2007 16:34:34 -0600
>
>
>The bike 06' 749 is running great except for this problem.   If you go
>through this range (4500-6800) at a "slower" acceleration, it does
>nothing wrong.  But, the greater the acceleration, the greater the
>sputtering and coughing.  I have put new plugs in.  By the way, I can
>not find even a reference on Google for these RG59V  champion plugs.  I
>had to resort to NGK's.  Where can I buy this champion plug.  I am 200
>miles from nearest dealer.  What have we to speak to on this mystery
>sages.  And please help me. Can someone please explain the theory of
>operation of the "TPS".  I know that it communicates to the ECU the
>position of the throttle.  Is it a digital device?
>Thanks
>Wendell
>
>*****
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