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#4485253 - 08/10/17 11:16 PM Bad injector in a twin. Do I need a matched pair?
Juan1 Offline


Registered: 08/08/17
Posts: 3
Loc: San Diego
My new-to-me, not-run-in-5-years Ducati has a bad injector and a perfectly fine one. Do I need to replace both of the injectors with a matched pair, or should I just replace the bad injector? The prices are $210 vs $45 so you can tell which way I'm leaning. Thanks!

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#4485257 - 08/10/17 11:21 PM Re: Bad injector in a twin. Do I need a matched pair? [Re: Juan1]
rubberchicken Offline


Registered: 07/07/08
Posts: 399
Loc: Maryland USA
I am leaning towards just replacing the one injector. But if it sat for 5 years, you might have some other fuel related issues unless it was properly winterized aka gas stabilizer.

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#4485269 - 08/10/17 11:29 PM Re: Bad injector in a twin. Do I need a matched pair? [Re: rubberchicken]
Juan1 Offline


Registered: 08/08/17
Posts: 3
Loc: San Diego
The bike was revived carefully with each injector being cleaned and flushed with Techron. Even during the first flush the good injector sprayed quite a bit more fuel than the bad injector. An extra $150 seems worth it for piece of mind, but that's 25% of the bike's sale price!


Edited by Juan1 (08/10/17 11:30 PM)

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#4485293 - 08/11/17 12:32 AM Re: Bad injector in a twin. Do I need a matched pair? [Re: Juan1]
Langanobob Offline


Registered: 04/24/09
Posts: 208
Loc: Reno, Nevada
I have a couple of Ducatis but so far haven't had any injector issues so no first hand experience. I would be inclined to just replace the single bad injector as unless you have a race engine and are trying to extact every tiny fraction of a Horsepower I don't think your engine will know the difference.

Welcome to BITOG but another thing I would do is search for Ducati forums. There are several with a few members that live and breathe Ducati engines. They could more likely give you some definitive answers and recommendations.

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#4485297 - 08/11/17 12:50 AM Re: Bad injector in a twin. Do I need a matched pair? [Re: Juan1]
AVB Offline


Registered: 05/20/12
Posts: 1283
Loc: Georgia
Is this a $600 beater or a smoking deal on a clean bike? If it is a beater just patch it, if it is a clean bike put some money into it. Either way it should run fine with 1 injector. Matched injectors may make it run a bit smoother, but you may never even notice the difference.

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#4485310 - 08/11/17 02:49 AM Re: Bad injector in a twin. Do I need a matched pair? [Re: Juan1]
michaelluscher Offline


Registered: 10/07/12
Posts: 2422
Loc: Staten Island, NY
For under $50 for the pair, why not send both out for possible revival and cleaning?
_________________________
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#4485339 - 08/11/17 05:36 AM Re: Bad injector in a twin. Do I need a matched pair? [Re: michaelluscher]
BigD1 Offline


Registered: 08/12/15
Posts: 2575
Loc: NC
Originally Posted By: michaelluscher
For under $50 for the pair, why not send both out for possible revival and cleaning?


Exactly what I would do.

Never sent in an injector to this outfit, but they do come up lots when sending out injectors for service.

http://www.witchhunter.com/
_________________________
1992 Toyota Pickup--Havoline HM 10W-30--Motorcraft FL-910S

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#4485470 - 08/11/17 08:51 AM Re: Bad injector in a twin. Do I need a matched pair? [Re: Juan1]
Bottom_Feeder Offline


Registered: 12/07/08
Posts: 3013
Loc: Occupied Virginia
Wow, a $600 Ducati that's new enough to be EFI? I'm already sad imagining its overall condition. frown

RC Engineering is another good source (so I've heard). https://www.rceng.com

Isn't there a user in here who services fuel injectors?

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#4485500 - 08/11/17 09:12 AM Re: Bad injector in a twin. Do I need a matched pair? [Re: BigD1]
Brons2 Offline


Registered: 09/16/03
Posts: 3042
Loc: Austin, Texas
Originally Posted By: BigD1


Exactly what I would do.

Never sent in an injector to this outfit, but they do come up lots when sending out injectors for service.

http://www.witchhunter.com/


They say that they don't do DI injectors. Who does those?
_________________________
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#4485556 - 08/11/17 10:05 AM Re: Bad injector in a twin. Do I need a matched pair? [Re: Juan1]
Trav Offline


Registered: 11/20/06
Posts: 18896
Loc: MA, Mittelfranken.de
What year and model is it, I can do them.
_________________________
ASE L1, Master. Deutsch Meisterbrief.

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#4486013 - 08/11/17 07:13 PM Re: Bad injector in a twin. Do I need a matched pair? [Re: Juan1]
Juan1 Offline


Registered: 08/08/17
Posts: 3
Loc: San Diego
The bike is in shockingly good condition. Guy hadn't ridden it since his child was born and was moving, so he just wanted it out of the garage.

I bought an unmatched pair of injectors on ebay so I can ride the beautiful bike. Once they are on the bike, I'll send off my factory units to be cleaned. If the factory units can be restored, I'll put them back on the bike and sell my eBay Weber injectors.

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#4486211 - 08/12/17 12:01 AM Re: Bad injector in a twin. Do I need a matched pair? [Re: Trav]
Srt20 Offline


Registered: 07/14/14
Posts: 495
Loc: Wisconsin
Originally Posted By: Trav
What year and model is it, I can do them.


Sorry to OP to get off topic, but

I have 4 snowmobile injectors that I need cleaned. But the wire connectors are glued together. If I cut the wires and send the injectors in to be cleaned, does that create a problem for the people cleaning them?

Could you PM me what you get to clean injectors please? I assume you have a machine to clean them? (Im unsure of the name of the high psi machine that does the work)
Its a 2 cylinder Polaris 700cc 2 stroke with 4 injectors. Im having some severe runabilty issues and the injectors have alot of miles on them, at least alot of miles for a snowmobile.

Thanks.

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#4486286 - 08/12/17 05:54 AM Re: Bad injector in a twin. Do I need a matched pair? [Re: Srt20]
Trav Offline


Registered: 11/20/06
Posts: 18896
Loc: MA, Mittelfranken.de
Glued together? Do you have a picture? Yes cut wires are a problem they cant be hooked to to the machine without doing some Mickey Mouse stuff I rather not get into.
_________________________
ASE L1, Master. Deutsch Meisterbrief.

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#4488428 - 08/14/17 02:17 PM Re: Bad injector in a twin. Do I need a matched pair? [Re: Brons2]
Bottom_Feeder Offline


Registered: 12/07/08
Posts: 3013
Loc: Occupied Virginia
Originally Posted By: Brons2
Originally Posted By: BigD1

They say that they don't do DI injectors. Who does those?

Ducatis use Direct Injection? Since when? confused

What year/model is it?

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#4488439 - 08/14/17 02:35 PM Re: Bad injector in a twin. Do I need a matched pair? [Re: Bottom_Feeder]
Trav Offline


Registered: 11/20/06
Posts: 18896
Loc: MA, Mittelfranken.de
Probably Magneti Marelli top feeds not DI, they are small and need a special adapter.
_________________________
ASE L1, Master. Deutsch Meisterbrief.

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