Wildguzzi.com
General Category => General Discussion => Topic started by: rodekyll on May 25, 2015, 03:36:34 PM
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I'm not firing my sx injector. DX fires and the bike runs on the one pot. Fuel pressure is present. Spark is present on both sides, and if I squirt ether into the sx intake it fires until the charge is gone.
Pulled the injector, toggled the fuel pump and hit the starter -- runs on DX. SX injector doesn't squirt. Tried two more injectors I had lying around -- no joy.
Checked the injector wires -- my test light glows bright on one pin.
Pulled the plug from the DX side and repeated the tests on all three injectors -- no squirt. In addition, when holding them in my hand I feel no click.
Also, looking at the map -- the injectors are fed a common hot via fuse6 and the fuel pump relay. Pin 13 (looks pink in the map) controls the SX pulse. Pin 6 (light blue) goes to the DX. I do not see any direct grounding and really don't expect any. I'm assuming the pin 13 and 6 connections ground to trigger the injectors. So I do a direct wire-up to the battery and still can't fire the injectors.
I'm not getting how I've got three dead injectors. Am I missing something in my test technique? Can these be disassembled?
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I tried it with the known good injector plug while it was hanging out in space -- no squirt.
Buuuuuuutttttttt . . . . . . I forgot the most basic test, probably because I'm working alone and there's nobody around to hold my beer. I very carefully held one of the injectors in the palm of my right hand and then with great precision whacked it smartly with a ballpeen hammer held in the left. Viola! (means large fiddle) It works now. Nice, even cone of squirtum. The only part I don't get now is why they assign symphonic instruments to Aha! moments.
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You are right, both injectors are alive on one side, the ECU pulls the other side to ground with a JFET
I'll e-mail you something
Roy
Oh, I see you already fixed it in the approved manner ;-T
I guess it was just gummed shut.
Just as well I sent my stuff to someone else ???
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Pedant mode: it's 'voilà', not viola. Ahem.
BTW, you can test injectors with GuzziDiag.
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What choices do I have with guzzidiag? My hammers come in 12, 18, 22, and 48oz. :D
Seriously though -- I have diag software. All it can tell me is that the trigger works. It can't check for flow. So it would insist it's good without having a squirtable unit. Without getting all volumetric about it, I'll just say that I hate it when any of my units won't squirt.
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a trip to an ultrasonic cleaner will break that goop loose most of the time.
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I might find me one to clean up my two spare injectors.
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I have one from harbor freight. With coupon it was around 60.00 and is the exact same one that Hornady markets for firearms for a lot less. It works great for all kinds of cleaning.
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But a hammer is much more fun. :D
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a trip to an ultrasonic cleaner will break that goop loose most of the time.
I'm not sure he'd want to put his "unit" in that.. :o
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After having been married I'm immune to all sustained, ultrasonic noises. Also to hammers.
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Cut the ends off of the old lamp cord but leave one end joined and split/slit the other end enough to attach alligator clips with enough spread for battery hook up. Touch the narrow end to the injector several times. Injectors use 5 VDC and the direct 12 VDC from the battery will shock them into submission.
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Cut the ends off of the old lamp cord but leave one end joined and split/slit the other end enough to attach alligator clips with enough spread for battery hook up. Touch the narrow end to the injector several times. Injectors use 5 VDC and the direct 12 VDC from the battery will shock them into submission.
My injectors have a native +12v from fuse 6 at one post. The pulse happens when the ecu triggers the other post to ground.
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well they are not made for constant 12volt. Just a moment does no harm.
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well, now I'm confused. If they don't do 12v, why are they powered directly from the fuse?