Question about 1988 Ducati 851 Strada (Tricolore)

1 Answer

Ducati 851 tricolor

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.

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 83 Answers

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


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Owners manual

The above link is for the 1991 if that is any good

Have look on Ducati owners forum, there may be a download for a '88 if you are lucky.

Jan 04, 2014 | 1988 Ducati 851 Strada (Tricolore)

1 Answer

I have a 1991 851 fuel pump needs replacement and filter also .how does fuelpump come out of tank?

remove tank and you should see if its held in by bolts or a retaining lock ring which you rotate to loosen ! more info if my suggestions no help ! P...

Nov 25, 2013 | 1988 Ducati 851 Strada (Tricolore)

1 Answer

Ducati 851 wiring diagram?

Hi, Anonymous sorry you can't find the first and best tool you ever bought for your Ducati despair not, for a mere $10 you can download another one. For more information about your issue and free valuable downloads that you will need please visit the websites below. Good luck and have a nice day.
Workshop Manual Ducati 888 Superbike Strada 888 Sport Production Omologato...
Ducati OEM Parts Fiche Lookup and Online Ordering
Ducati Maintenance
Ducati 851 Superbike Kit
the official tips and tricks thread Speedzilla Motorcycle Message Forums

Apr 02, 2013 | 1988 Ducati 851 Strada (Tricolore)

1 Answer

Rebuilding a bike which has bits from here and there. Believe motor to be 1986 GSX750. it runs, carby has fuel in it and seems to be working alrighty, plugs are sparking, but engine backfires a fair bit...

it probably isnt a firing order problem, or it probably wouldnt run

one coil fires 1 & 4 cylnder, the other coil fires 2 & 3 cylnders, as the pick up gets its signal from the crank, it sends a spark to each cylnder on the exhaust stroke as well as the compression stroke, ignition timing also doesent change as it is electronic and cant drift out like when points wear.
a short in the ingnition or kill switch can occasionally cause a backfire
Backfire can also be caused by
lean mixture, dirty carbs, loose carb clamps
leaking inlet or exhaust flanges and gaskets
tight valve clearances, burnt valves

make sure everthing is clean and tight, good air filter and exhaust, check valve clearances ,and give it a compression test, check the valve timing, incase it has been assembled wrong,(they rarely jump a tooth unless the chain and tensioner are completely stuffed)

Mar 03, 2011 | 1986 Suzuki GSX 750 ES

1 Answer

Engine turns over and sparks but wont start, fuel pump is running

Hi, Iknapp and the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
7. Discharged battery, check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
8. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and module.
9. Spark plug cables in bad condition and shorting, cable connections loose, or connected to the wrong cylinders.
10. Ignition timing incorrect due to a faulty ignition coil, ignition module or sensors (MAP, CMP, CKP, O2 and/or BAS).
11. Security alarm needs a reset.
For more information about your issue and valuable free downloads that you will need please visit the websites below. Good luck and have a nice day.
What will happen if fuel pump relay fail Ducati ms The Ultimate Ducati...
Workshop Manual Ducati 888 Superbike Strada 888 Sport Production Omologato...
Ducati OEM Parts Fiche Lookup and Online Ordering
Ducati Maintenance

Nov 30, 2010 | 1988 Ducati 851 Strada (Tricolore)

1 Answer

04 yz 450 backfires and is hard to start when is cold runs better with choke on

Runs better with choke means the mixture is lean,
Has the exhaust been changed.?
Did this problem just begin.?
Check for air leaks on intake manifold.
Clean carb.
Check valve clearances
raise the needle jet one notch
one size up in the main jet.

check one item at a time, and write notes about jetting changes.and improvements
I also run Moreys upper cylnder lube, helps starting hot or cold, and helps stop "cough stopping" with heavy rear brake use

May 20, 2010 | 2004 Yamaha YZ 450 F

1 Answer

Engine won't rev

system to lean means that there is not enough gas getting into the system try checking fuel filter and fuel injectors that should help you there hope everything works out

Jul 06, 2009 | 2000 Toyota MR2 Spyder

2 Answers

97 1500 z71 random/multiple misfires, runs horrible

common causes for backfires is-- lean misfire due to low fuel pressure or resticted fuel injectors, breakdown of secondary including internal ignition coil arching, and a dead spot in tps sensor.

Apr 21, 2009 | 1995-1997 Chevy 1500 Truck Ignition...

1 Answer

Fork seals

ZERO air pressure on these forks those air valves are to get rid of any built up pressure in the tubes. I also have a 1990 851 love it! What weight of oil are you running and how much are you putting in?,,

Nov 10, 2008 | 1988 Ducati 851 Strada (Tricolore)

Not finding what you are looking for?
1988 Ducati 851 Strada (Tricolore) Logo

402 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ducati Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4912 Answers


Level 3 Expert

79865 Answers

John Oughton
John Oughton

Level 1 Expert

40 Answers

Are you a Ducati Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides