Possible injector problem? - MVAgusta.net
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post #1 of 16 (permalink) Old 02-08-2017, 02:23 AM Thread Starter
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Possible injector problem?

G'day,

I recently installed a Healtech quick shifter on the 1078. This unit has a harness that connects to the fuel injectors. To cut a long story short it didn't work as according to Healtech tech support no 2 MV's wiring harnesses are alike and they indicated a harness for a Triumph is the go. Seemed to run ok with the supplied harness connected. Removed the harness to ship it back and it ran like a hairy dog. Stripped it again this morning and checked everything. 'O' rings on the injectors all looked good and everything was seated properly. Started her up and she ran terrible. Let her idle for a while and it seemed to come good. However when I went to go for a test ride it was running shit again.

So my question is: - what are the chances that an injector has failed? Bike has 40 000k up. I first thought there must be an air leak somewhere but as I said everything is seated and the 'o' rings look good. If it is an injector what type/number are they and do all Brutales run the same ones? I take it they can be tested by a bike shop or injector specialist?

Cheers

Deano
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post #2 of 16 (permalink) Old 02-08-2017, 06:04 AM
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It's more likely related to the work that was done.

That being said, you should have a fuel injection specialist that can test your injectors.

Keep your words soft and sweet, for someday you shall eat them....
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post #3 of 16 (permalink) Old 02-12-2017, 07:53 PM
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Wink ?

Deano;
1st inspect the injectors......the connection is VERY FRAGILE, if you're not careful you can break the injector....
inspect all the new connections ....
it's probably something with the installation of the QS

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post #4 of 16 (permalink) Old 02-13-2017, 05:23 PM Thread Starter
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Noel,

I heard that from a mate who had 3 or 4 broken by a dealer on his F4. That's before they dropped it off a workstand and wrote it off. So I was extra careful. Pulled it all apart again and cleaned all the connections. I had put dialectric grease on the plugs but cleaned it all off. Replaced all the injector o-rings too. Don't think they were the problem but changed them anyway. It's come good again and is running fine so it was tgo do with the QS. Now I just have to get the correct harness and try again. Those injector plugs are a pain. The only way I could get them apart was to remove the clip. Buggered if I could separatre the plug by pressing the clip or anything else. If there's a trick let me know.

Cheers

Deano
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post #5 of 16 (permalink) Old 02-15-2017, 06:07 PM
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Deano;
The clips go on from the top, so you can press them down into the semicircle on the top of the plug
remove the fuel rail 1st

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post #6 of 16 (permalink) Old 02-15-2017, 09:34 PM Thread Starter
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Noel,

That's what I thought. I'll post a photo when I fit the new harness but mine don't have semi circles or anything else to push the clip down into.

Cheers

Deano
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post #7 of 16 (permalink) Old 02-16-2017, 02:23 AM
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Quote:
Originally Posted by Deano View Post
Noel,

That's what I thought. I'll post a photo when I fit the new harness but mine don't have semi circles or anything else to push the clip down into.

Cheers

Deano
Hey Deano..

I see you removed the di electric grease...good move !

I once stopped my F4 indicators working perfectly by coating the bullet pin connectors with di-electric grease.
My buddy who is an electrician, cleaned the grease off the pins with WD40...and hey presto we had lights again.
Di-electric grease is an insulator.

I dont like it on certain connectors and would be sparing with it..It has its uses but some connectors are isolated by it.

Just my take...

Joe

Last edited by gotojoe; 02-16-2017 at 02:27 AM.
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post #8 of 16 (permalink) Old 02-16-2017, 05:40 AM Thread Starter
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Joe,

Did the same, cleaned them with WD40. Not suited the the injector plugs obviously. Lesson learned.

Cheers

Deano
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post #9 of 16 (permalink) Old 02-16-2017, 07:43 PM
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Thumbs up wtf?????

Quote:
Originally Posted by gotojoe View Post
Hey Deano..

I see you removed the di electric grease...good move !

I once stopped my F4 indicators working perfectly by coating the bullet pin connectors with di-electric grease.
My buddy who is an electrician, cleaned the grease off the pins with WD40...and hey presto we had lights again.
Di-electric grease is an insulator.

I dont like it on certain connectors and would be sparing with it..It has its uses but some connectors are isolated by it.

Just my take...

Joe
What's with the fetish that Europeans have with WD-40?????

It didn't fix anything!!!!! tweaking the 6mm mounting screws of an F4 front end does 99% of the time
It takes 2,150g to depress one of the F4 turn indicator buttons.....
you think that might PUSH THROUGH THE DIELECTRIC GREASE???????
Just maybe???

I have ZERO ELECTRICAL ISSUES ON MY VEHICLES ..... I have always used Dielectric grease on all electrical
connections including my '66 Chevy that has never been in a garage...... it's parking spot is 300m from the
Pacific Ocean

Dielectric grease is a corrosion inhibitor..... sounds like what you'd want doesn't it?


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Last edited by theknurl; 02-16-2017 at 07:46 PM.
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post #10 of 16 (permalink) Old 02-17-2017, 03:26 AM
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Deano if you ever need some injectors give me a bell ,think i have 3 from my first Throttle bodies ,but i think that was not your problem ,seems you have it sorted.

cheers eddy
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