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DB7 check Engine light
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Number2



Joined: 25 Jun 2017
Posts: 38
Location: South Carolina

PostPosted: Sat Sep 30, 2017 12:22 am    Post subject: DB7 check Engine light Reply with quote

It came on and the engine is running but very rough and will not idle. I looked through previous post but do not see anything. Does anyone know what might be wrong
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Number2



Joined: 25 Jun 2017
Posts: 38
Location: South Carolina

PostPosted: Sun Oct 01, 2017 9:08 pm    Post subject: Reply with quote

no one has any ideas on why the bike won't start? The light is called the injection malfunction light.
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2bims



Joined: 03 Apr 2010
Posts: 5453

PostPosted: Sun Oct 01, 2017 11:33 pm    Post subject: Reply with quote

Fuel pump? Fuel Filter blocked? O ring impeding QR connecters? Has anything been done to the bike recently?
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brian



Joined: 22 Aug 2011
Posts: 2699
Location: QLD, Australia

PostPosted: Sun Oct 01, 2017 11:34 pm    Post subject: Reply with quote

I know nothing about the new db's sorry. My only suggestion would be to take it to a Ducati dealer. They may not be much help if your DB7 has a different ECU though.
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Current motorcycles - '99 Bimota DB4, '96 Bimota SB6, '08 VTX1800, '93 ZXR750R M1, '95 ZXR750, '95 ZXR750 Race Bike, 94 CBR400rr NC29 Race Bike, '94 CB250, '49 BSA C10 250, 61 BSA A10 650
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Number2



Joined: 25 Jun 2017
Posts: 38
Location: South Carolina

PostPosted: Mon Oct 02, 2017 12:58 am    Post subject: Reply with quote

the bike was running fine with no work done recently. The light came on and went off a couple of times. While riding the light came on and the bike started running really rough. Now it will not start
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brian



Joined: 22 Aug 2011
Posts: 2699
Location: QLD, Australia

PostPosted: Mon Oct 02, 2017 2:17 am    Post subject: Reply with quote

Number2 wrote:
the bike was running fine with no work done recently. The light came on and went off a couple of times. While riding the light came on and the bike started running really rough. Now it will not start


Without knowing anything about DB7's myself, I would check all of the easy stuff first. Battery voltage, battery lead connections, all electrical connectors, all ground connections, fuses.

I would disconnect all electrical connectors that I could find and clean them an apply dielectric grease, including removing, cleaning and applying dielectric grease to all of the ground connections. These new bikes have a lot of electronics and sensors. Throttle position sensor, crank sensor, oxygen sensor?
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Current motorcycles - '99 Bimota DB4, '96 Bimota SB6, '08 VTX1800, '93 ZXR750R M1, '95 ZXR750, '95 ZXR750 Race Bike, 94 CBR400rr NC29 Race Bike, '94 CB250, '49 BSA C10 250, 61 BSA A10 650
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brian



Joined: 22 Aug 2011
Posts: 2699
Location: QLD, Australia

PostPosted: Mon Oct 02, 2017 2:18 am    Post subject: Reply with quote

Does the engine warning light flash to give you a fault code?
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Current motorcycles - '99 Bimota DB4, '96 Bimota SB6, '08 VTX1800, '93 ZXR750R M1, '95 ZXR750, '95 ZXR750 Race Bike, 94 CBR400rr NC29 Race Bike, '94 CB250, '49 BSA C10 250, 61 BSA A10 650
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Gavin944888



Joined: 29 Jan 2014
Posts: 349
Location: Essex....way South of Scotland

PostPosted: Mon Oct 02, 2017 2:29 pm    Post subject: Reply with quote

Number2

I had exactly the same issue on my DB9

It turned out to be a dodgy relay feeling the injection loom

Go to the right hand side ( near the V of the engine close to the area where everything is hot and you burn your fingers) find a batch of 3 or 4 5 pin electrical relays all grouped together in a fancy mount

Swap and see if the ign failure engine light goes out

Ducati changed the relay supplier in late 2011 could be the issue......the new ones are sealed for life

Took my a while to go through the fuses, connectors and relays until I found the problem...since then I have bought some silicon electrical grease....makes better contact, sticks and breaks really easily....it is non setting but very waterproof.


Good luck


Gavin
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Number2



Joined: 25 Jun 2017
Posts: 38
Location: South Carolina

PostPosted: Mon Oct 02, 2017 3:30 pm    Post subject: Reply with quote

thanks to all for the help. i will try the relay thing
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Number2



Joined: 25 Jun 2017
Posts: 38
Location: South Carolina

PostPosted: Mon Oct 02, 2017 4:27 pm    Post subject: Reply with quote

the workshop manual calls for a CD which is needed to perform diagnostics and I am wondering if anyone knows how I can get one?
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2bims



Joined: 03 Apr 2010
Posts: 5453

PostPosted: Mon Oct 02, 2017 5:30 pm    Post subject: Reply with quote

Number2 wrote:
the workshop manual calls for a CD which is needed to perform diagnostics and I am wondering if anyone knows how I can get one?


Please please please don't try to go down this route just yet....try the other stuff..particularly the relays swap...a few folk have had bead relays on the DB7.

I have the programmes....cant be emailed only on disc or memory stick...but then you need the special cable also...and they are all sold out...and then youneed the special laptop programme also....nothing newer...Windows stuff doesn't apply....if you lived near Bob of Bimota Spirit he could help...as he has portable laptop and programmes and the lead
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2bims



Joined: 03 Apr 2010
Posts: 5453

PostPosted: Mon Oct 02, 2017 5:30 pm    Post subject: Reply with quote

Number2 wrote:
the workshop manual calls for a CD which is needed to perform diagnostics and I am wondering if anyone knows how I can get one?


Please please please don't try to go down this route just yet....try the other stuff..particularly the relays swap...a few folk have had bad relays on the DB7.

I have the programmes....cant be emailed only on disc or memory stick...but then you need the special cable also...and they are all sold out...and then youneed the special laptop programme also....nothing newer...Windows stuff doesn't apply....if you lived near Bob of Bimota Spirit he could help...as he has portable laptop and programmes and the lead
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Number2



Joined: 25 Jun 2017
Posts: 38
Location: South Carolina

PostPosted: Tue Oct 03, 2017 2:41 am    Post subject: Reply with quote

is there a generic substitute relay that can be purchased
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2bims



Joined: 03 Apr 2010
Posts: 5453

PostPosted: Tue Oct 03, 2017 3:05 pm    Post subject: Reply with quote

Number2 wrote:
is there a generic substitute relay that can be purchased


Any Ducati dealer should have stock.....The whole engine and bits are all from the Ducati 1098....with the exception of the ECU and injection system

Like here on ebay...but really...you'd be far better buying new with a warranty

http://www.ebay.co.uk/itm/08-DUCATI-1098-S-RELAYS-/252759678030?hash=item3ad9a69c4e:g:hS8AAOSw-0xYmgdj
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Number2



Joined: 25 Jun 2017
Posts: 38
Location: South Carolina

PostPosted: Tue Oct 03, 2017 5:02 pm    Post subject: Reply with quote

I will head to my local Ducati dealer. Is there an option for replacing the Walbro system?
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