Ducati Monster Forum

Moto Board => Tech => Topic started by: mtnduc on February 25, 2017, 05:22:15 PM

Title: Relay Not Relaying -- IT's ALIVE !!
Post by: mtnduc on February 25, 2017, 05:22:15 PM
02 M750ie
12K miles
OK .............. let the project begin.

Supposedly ran last Fall.

When you turn the key I hear the fuel pump whir, gauges sweep & settle, headlight works on high & low beam, horn works.
I don't hear the pronounced relay click like I hear on my 888 & 907.
Hit the starter and it cranks, a little slow, but battery was fully charged last night.
Pulled a plug and I get a spark when cranking & grounding against the cylinder.
All fuses replaced w/new this AM.
Gas in the tank.

Any ideas why no BOOM?
Title: Re: Relay Not Relaying?
Post by: Howie on February 25, 2017, 07:18:38 PM
After fully charging the battery have it load tested.  Fully charged does not mean good.  In the meanwhile you could try a jump from your car battery (car not running).
Title: Re: Relay Not Relaying?
Post by: ducpainter on February 26, 2017, 05:12:48 AM
Did you verify the lines to the throttle bodies from the tank are connected correctly?

The feed hose was identified with a plastic band with the letter M. That's the one that goes to the injectors. There should be a label on the tank bottom identifying which is which.
Title: Re:
Post by: greenohawk69 on February 27, 2017, 06:19:04 AM
https://youtu.be/ire7vyDqelg

I tested my relay and found out it was not working. Bought new and problem was solved.
Title: Re: Relay Not Relaying?
Post by: ducpainter on February 27, 2017, 07:21:31 AM
I might be wrong, but if the pump is priming I don't believe there is an electrical issue.
Title: Re: Relay Not Relaying?
Post by: mtnduc on February 27, 2017, 07:29:49 AM
ducpainter -- under tank hoses are correct.  M in the rear & R in the front
Title: Re: Relay Not Relaying?
Post by: Speeddog on February 27, 2017, 08:21:32 AM
All fuel lines attached properly inside the tank?
Title: Re:
Post by: greenohawk69 on February 27, 2017, 08:22:26 AM
Did you load test the battery? Re-check battery connections (e.g. grounded)?
Title: Re: Relay Not Relaying?
Post by: mtnduc on February 27, 2017, 08:26:31 AM
speeddog -- checking in-tank setup today after it gets a bit warmer
greenohawk69 -- I've tried both the battery in the bike & a spare that I keep on a tender on my workbench for testing purposes
greenohawk69 -- just tried the relay test in the above video, thanks BTW, and both relays passed both tests....dammit!!
Title: Re: Relay Not Relaying?
Post by: mtnduc on February 27, 2017, 10:01:54 AM
It's ALIVE!!
The lines in the tank were all screwed up and now that they are correct the main M & R lines are leaking so all new lines will go on all around.
Title: Re: Relay Not Relaying -- IT's ALIVE !!
Post by: ducpainter on February 27, 2017, 11:01:02 AM
Typically, the external lines don't deteriorate rapidly. It could just be loose clamps.

If you decide to replace, you don't need submersible line. Standard high pressure FI hose will do it.