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post #1 of 8 (permalink) Old 06-02-2010, 02:21 PM Thread Starter
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Check injectors?

How do you check injectors to see if they are working? I know im getting gas throw my fuel lines to the injectors. I took the fuel rail off and its clean. took the injectors off, but not sure how to check to see if they work or are just dirty.

I also have a relay that stays hot. I dont know what the relay goes to, because who ever had the bike before put a under seat exaust and moved the relays back by the battery. with no key on the relay stays hot, unless i take it out of course. i checked and that relay plug is still getting power with no key in the ignition.

this could be why my battery wont stay charged any?

97 Daytona t595 with a 99 dayton triumph motor swap

Last edited by 97daytri; 06-02-2010 at 02:31 PM.
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post #2 of 8 (permalink) Old 06-02-2010, 04:24 PM
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"this could be why my battery wont stay charged any?" --97daytri

Yes. Pull fuses until the relay's battery feed goes dead to determine which relay it is.

Brad
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post #3 of 8 (permalink) Old 06-02-2010, 05:16 PM Thread Starter
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after i pull the fuse to find out what relay it is. what would be the next step?

also, any clue how to check my injectors to see if they are bad or just stopped up? i found some used ones andi need to find out pretty quick if mine are good or not.

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post #4 of 8 (permalink) Old 06-02-2010, 08:15 PM
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87daytri, Then we can determine which circuit has a problem.

At the fuel injector connector the pink lead should have full battery voltage and is common for all injectors. The yellow lead (three different tracers) go to the ECU. With a (+) VOM connected to one of the injectors' yellow wires, set to ~20 VDC and a (-) VOM lead to ground you should see a low going pulse as the starter spins the engine. If you have a digital meter with a slow refresh rate you may see several different values appear, an analog meter will drop it's needle at each ground pulse. That is the ground pulse from the ECU which operates the injector's solenoid. If you get that, it's down to low fuel pressure or, much less likely all three injectors have failed at the same time.

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post #5 of 8 (permalink) Old 06-02-2010, 10:12 PM Thread Starter
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i wil check in the morning, and update this thread.

thank you brad for the help

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post #6 of 8 (permalink) Old 06-03-2010, 12:15 PM Thread Starter
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[ img=http://img412.imageshack.us/img412/5884/p6020120111.jpg[ /img]


The fuse that is missing is the one that goes with the relay that is staying on, took it out so the relay wouldnt stay on.

97 Daytona t595 with a 99 dayton triumph motor swap

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post #7 of 8 (permalink) Old 06-03-2010, 02:28 PM
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97daytri, Unfortunately it has nothing to do with engine management. It is for the left hand headlamp main and dip. If you don't have the cover to the fuse block I can give you designations and values.

Brad

PS I've errands to run, but later I or perhaps in the meantime DEcosse can have a quick look at the circuit.

Last edited by bradtx; 06-03-2010 at 02:32 PM.
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post #8 of 8 (permalink) Old 06-03-2010, 07:21 PM Thread Starter
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Quote:
Originally Posted by bradtx View Post
97daytri, Unfortunately it has nothing to do with engine management. It is for the left hand headlamp main and dip. If you don't have the cover to the fuse block I can give you designations and values.

Brad

PS I've errands to run, but later I or perhaps in the meantime DEcosse can have a quick look at the circuit.
i dont have the cover the for fuse box. i have the triumph mechanic book, but not sure if that will have what i need. what would cause that relay to stay on with no key?

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