Question about 1988 Ducati 851 Strada (Tricolore)
Flat spot at low revs between 3000-3500 soundd like it is backfiring through the cylnder could it be running too lean no problem at high revs goes like a rocket.
Yes the backfire is an indication of being lean. Have you checked the valves lately? May be a sign of tight valves although that often cause a rough idle as well. Have you modified the filter system or added a tuned exhaust? Any changes like that can and will cause a change in carburation in which case you may need to fatten up the mid range jetting.
Posted on Dec 08, 2008
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Posted on Jan 02, 2017
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