gregs
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 posted on 13/4/09 at 05:59 PM |
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MS Injector bank not firing
All,
After re-building my head, after the RR disaster, the car is running again BUT at least at idle, it is only running on two cylinders (3&4) -
surprisingly well!, I can pull the plugs off 1&2 with no difference, but 3&4 kill the engine. 1&2 are bank 1, 3&4 are bank 2. I have
tried connecting the wire from cyl 3 to 2 and the issue has moved, so looks like the hardware is ok. Have checked I haven't got staged injection
on or anything silly, and have buzzed out the wiring and plug to plug is ok.... any ideas other than a burnt out driver?
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rusty nuts
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| posted on 13/4/09 at 06:47 PM |
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Live feed ?
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gregs
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| posted on 13/4/09 at 06:49 PM |
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quote:
Originally posted by rusty nuts
Live feed ?
common with bank 2
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piddy
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| posted on 13/4/09 at 07:38 PM |
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Remember you need a spark and fuel. you can check the fuel by firing with the injectors out ( be careful fire hazard and all that)
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gregs
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| posted on 13/4/09 at 07:39 PM |
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deffo got spark - can move the issue around with the injector wire.....
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flak monkey
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| posted on 13/4/09 at 07:45 PM |
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If the wiring checks out ok, could be a duff driver in the ms.
David
Sera
http://www.motosera.com
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mark chandler
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| posted on 13/4/09 at 07:58 PM |
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If you have low impendance injectors the output transistor may be shot, especially if you have set the PWM to 100%
Easy enough to change, you can pick the bits up from maplins.
First though check basics, quite likely to be a duff solder joint in the RS232 plug, also most MS issues are due to not cleaning the board properly
after assembly so look for dry joints, etc.
Regards Mark
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gregs
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| posted on 13/4/09 at 08:06 PM |
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thanks for the suggestions - I am with Flak Monkey, reckon the driver has gone south - harness bells out ok, injectors are high impedance..
ECU was from Phil Ringwood, so have e-mailed him for advise - might lash all four injectors onto one driver for the time being (any reason I
can't?)
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omega 24 v6
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| posted on 13/4/09 at 09:11 PM |
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You could check continuity all the way back to the driver leg. If it's ok then probably a driver
If it looks wrong it probably is wrong.
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gregs
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| posted on 18/4/09 at 10:48 AM |
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Totally confused now.....
ECU has been back to Phil and got a clean bill of health - but - problem remains....
Have checked the harness again - all OK continuity wise, and cant get a measurable resistance, nothing untoward I can see in the plug either.
As engine is at idle on two cylinders, I have plugged a spare injector into the 'dead bank' wiring, and they/it clicks gentley away.
I have stripped back the harness further and wired cylinders 1&3 with the 'good' bank and they run fine.
Don't really know where to go from here as I think everything is has been isolated and proved out....any ideas? issue almost seems down to not
enough current for the injectors on bank 1!?
I've wired the injectors as they were on the GSXR - ie the grouped wires are still grouped (and fed to ign +ve) and the individual ones feed to
the MS outputs - is this ok?
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Schrodinger
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| posted on 18/4/09 at 12:17 PM |
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I don't know the MS but does the software require you to tell it you are using both drivers as I would expect to use one driver with 4 cylinders
the second driver for a second set of injectors or for a v8/v6 setup.
Keith
Aviemore
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gregs
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| posted on 19/4/09 at 07:59 AM |
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thanks - all guidance says use both, but I was already thinking about putting all four onto the working driver...
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