1984 xjs HE ign amplifier modual
#21
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ok,just took distributor out.With timming mark still at 0° TDC on mark.Dist turns fine.The timming rotor, the round meatal disc over shaft of distributor wiith splines on it,is pretty rusty looking.should I clean up the facial part of the spliens,with some fine emery cloth?I know these rotate around and pass pick up modual for timming on each cylinder.On that same disc.(electronic timming rotor),towards the center in deap grove that goes all the way around,on timming rotor,there are to perpendicular slashes casted in about 1/8" apart is this the mark that is to line up with middle of pick up modual?
Can you send a picture?
It's sounding like you have the wrong distributor in the car. Has this car ever run with this distributor? Did you buy it in non-running condition?
Cheers
DD
#22
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This is what a "timing rotor" looks like:
Reopus Ignition | The OPUS distributor rotor
You should NOT have one of these in a 1984 V12 distributor. If you do then the distributor (or engine!) has been changed.
The operation and diagnostics between Lucas Opus and Lucas CEI are different.
We need to make sure we're all on the same page before going any further!
Cheers
DD
Reopus Ignition | The OPUS distributor rotor
You should NOT have one of these in a 1984 V12 distributor. If you do then the distributor (or engine!) has been changed.
The operation and diagnostics between Lucas Opus and Lucas CEI are different.
We need to make sure we're all on the same page before going any further!
Cheers
DD
#23
Ok, I have a haynes manual not the best..I may be mistaken.what I mean is on distributor there is a meatal disc, looks like a disc with splines on it.One spline per cylinder.when distributor turns,each spline contacts the pick up modual one at a time,creating spark for that cylinder.That is prety rusty looking.I think its magnetic.so might be better just to clean it with electrical cleaner.Now there is a vernier adjuster on bottom side of distributor,with a small scale.And three screws inside at bottom of distributor, with springs.Are those to adjust the distributor position?
Last edited by jagernut; 05-24-2014 at 03:12 PM.
#24
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Ok, I have a haynes manual not the best..I may be mistaken.what I mean is on distributor there is a meatal disc, looks like a disc with splines on it.One spline per cylinder.when distributor turns,each spline contacts the pick up modual one at a time,creating spark for that cylinder.
Yeah, that sounds like an 'Opus' timing rotor. Doesn't belong in a 1984 car at all. Something ain't right here; something has been changed around. The two ignition systems are totally different
That is prety rusty looking.I think its magnetic.so might be better just to clean it with electrical cleaner.Now there is a vernier adjuster on bottom side of distributor,with a small scale.And three screws inside at bottom of distributor, with springs.Are those to adjust the distributor position?
The three screws hold the distributor down and allow rotation/adjustment, yes. The vernier is for fine adjusting while the engine is running.
None of that matters at this point, though, until we figure out how a pre-1981 distributor was wired into a 1984 car that originally came with an entirely different system!
Cheers
DD
#25
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#26
Ok,I have a haynrs manual not the best.There is a disc that looks like a gear,it has splines on it,a spline for each cylinder.The splines pass the pick up modual one at a time to determin spark for cylinders.I think its magnetic.I cleaned them with electrical cleaner and a cloth.Also there is a vernier adjusting lock nut and screw on side at bottom of distributor.and three bolts eith springs inside distributor.Im asumming thoes bolts have to be loosend to fine tune the timming.Is that correct?
#27
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OK, looked at the pics. Never mind the earlier remarks about OPUS ignition. You have the correct distributor. Sorry for the mix-up but you are usualy terminology that doesn't match the car! Not your fault....the Haynes manuals are confusing/incomplete
The toothed gear thingy is commonly called a reluctor wheel.
Is there a section in your Haynes manual that covers the later ignition?
Anyhow, proceed as planned. Get the distrubutor correctly installed as see what happens.
Cheers
DD
The toothed gear thingy is commonly called a reluctor wheel.
Is there a section in your Haynes manual that covers the later ignition?
Anyhow, proceed as planned. Get the distrubutor correctly installed as see what happens.
Cheers
DD
#29
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#32
I was just going to tell you about that.When I turn on key,I hear fuel rail charging with gas for about 3 seconds.While cranking I hear no clicking of fuel injs.After trying to start a few times.I pulled one spark plug 2A,it was pretty dry, it smelled a little like gas.
Last edited by jagernut; 05-24-2014 at 08:06 PM.
#33
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#34
#35
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If the amplifier wiring isn't right then the injectors won't operate. So double check on that.
The purpose of the test I mentioned just above is to see if the injectors are getting *supply* voltage. You can still do it, but also double check on the amp wiring.
Cheers
DD
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jagernut (05-25-2014)
#36
#37
#38
Ok,well I guess,that answers my question on that black wire in the same harness as coax wire from ecu.I think it blew my amp.I use to have 12v on that coax wire when ign is on.not now.And I use to have 5v on tach wire,same thing, not anymore.I disconnected the black wire from outer mesh on coax,.still no voltage.
And checked spark on coil wire to distributor.I have good yellow spark. I took one plug wire off and grounded it to eng and turn it over,spark is not constant.So something is still wrong.
Also,when I have ign on and take test light,and touch it to the coax wire from ecu,while hooked up to amp,the injectors click once.Dont understand that.
And checked spark on coil wire to distributor.I have good yellow spark. I took one plug wire off and grounded it to eng and turn it over,spark is not constant.So something is still wrong.
Also,when I have ign on and take test light,and touch it to the coax wire from ecu,while hooked up to amp,the injectors click once.Dont understand that.
Last edited by jagernut; 05-24-2014 at 10:48 PM.
#39
Update,I pulled the front two injectors,leaving them hooked up to fuel rail.I turned on ign let rail charge with fuelto see if injector was leaking,no leaks.I then cranked eng,both injectors spray fuel at a pulse.
So im guessing my pulse from amp is getting to ecu,and firing injectors.That part must be working.So now Im thinking spark.I know I have good spark from coil secondary wire to distributor.I grounded it and have good spark.When I ground a plug wire from a spark plug,I have spark but its not consistent,intermittent.So would that problem lie in the distributor?
So im guessing my pulse from amp is getting to ecu,and firing injectors.That part must be working.So now Im thinking spark.I know I have good spark from coil secondary wire to distributor.I grounded it and have good spark.When I ground a plug wire from a spark plug,I have spark but its not consistent,intermittent.So would that problem lie in the distributor?
Last edited by jagernut; 05-25-2014 at 11:01 PM.
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