XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

1984 xjs HE ign amplifier modual

Thread Tools
 
Search this Thread
 
  #21  
Old 05-24-2014, 02:49 PM
Doug's Avatar
Veteran Member
Join Date: Mar 2008
Location: Pacific Northwest USA
Posts: 24,762
Received 10,783 Likes on 7,114 Posts
Default

Originally Posted by jagernut
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  
Old 05-24-2014, 02:58 PM
Doug's Avatar
Veteran Member
Join Date: Mar 2008
Location: Pacific Northwest USA
Posts: 24,762
Received 10,783 Likes on 7,114 Posts
Default

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
 
  #23  
Old 05-24-2014, 03:08 PM
jagernut's Avatar
Senior Member
Thread Starter
Join Date: Jan 2014
Location: tehachapi ca
Posts: 464
Received 5 Likes on 4 Posts
Default

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  
Old 05-24-2014, 03:22 PM
Doug's Avatar
Veteran Member
Join Date: Mar 2008
Location: Pacific Northwest USA
Posts: 24,762
Received 10,783 Likes on 7,114 Posts
Default

Originally Posted by jagernut
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  
Old 05-24-2014, 03:23 PM
Doug's Avatar
Veteran Member
Join Date: Mar 2008
Location: Pacific Northwest USA
Posts: 24,762
Received 10,783 Likes on 7,114 Posts
Default

Originally Posted by Doug
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

An answer to this question ^ ^ would be helpful at this point !!

Cheers
DD
 
  #26  
Old 05-24-2014, 03:38 PM
jagernut's Avatar
Senior Member
Thread Starter
Join Date: Jan 2014
Location: tehachapi ca
Posts: 464
Received 5 Likes on 4 Posts
Default

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  
Old 05-24-2014, 03:53 PM
jagernut's Avatar
Senior Member
Thread Starter
Join Date: Jan 2014
Location: tehachapi ca
Posts: 464
Received 5 Likes on 4 Posts
Default

Haynes manual.1972- 1985 V12 here is picture of dist I cant post on thread.Ill post it in my garage.
 
  #28  
Old 05-24-2014, 04:13 PM
Doug's Avatar
Veteran Member
Join Date: Mar 2008
Location: Pacific Northwest USA
Posts: 24,762
Received 10,783 Likes on 7,114 Posts
Default

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
 
  #29  
Old 05-24-2014, 04:36 PM
jagernut's Avatar
Senior Member
Thread Starter
Join Date: Jan 2014
Location: tehachapi ca
Posts: 464
Received 5 Likes on 4 Posts
Default

Ok,You had me worried there for a moment.
So I just install dist like dicussed earlier.Put in dist with rotor pointing at 11:00,using a/c compressor as 12:00.Then place plug wires,starting #1a on cap at 1 mark and continue in cc wise rotation.Correct.then go from there.
 
  #30  
Old 05-24-2014, 06:43 PM
jagernut's Avatar
Senior Member
Thread Starter
Join Date: Jan 2014
Location: tehachapi ca
Posts: 464
Received 5 Likes on 4 Posts
Default

Ok,I put rotor at aprox 11:00,put cap back on dustributor, plug wires are on correct. Tried to start and it just jumped a little. Car has been sitting a few years.I didnt adjust anything on distributor.Shouldnt it still at least start?
 

Last edited by jagernut; 05-24-2014 at 07:25 PM.
  #31  
Old 05-24-2014, 07:53 PM
Doug's Avatar
Veteran Member
Join Date: Mar 2008
Location: Pacific Northwest USA
Posts: 24,762
Received 10,783 Likes on 7,114 Posts
Default

You'd think so.

Are you getting fuel? Are the injectors clicking when you crank the starter?

Turn the key 'on' and press the throttle. Do you hear a click from the injectors?

Cheers
DD
 
  #32  
Old 05-24-2014, 08:03 PM
jagernut's Avatar
Senior Member
Thread Starter
Join Date: Jan 2014
Location: tehachapi ca
Posts: 464
Received 5 Likes on 4 Posts
Default

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  
Old 05-24-2014, 08:23 PM
Doug's Avatar
Veteran Member
Join Date: Mar 2008
Location: Pacific Northwest USA
Posts: 24,762
Received 10,783 Likes on 7,114 Posts
Default

Unplug one of the injectors. Using a test light, and with the key 'on', are you getting 12v on one of the terminals inside the connector?

Check a couple others as well.

Cheers
DD
 
  #34  
Old 05-24-2014, 08:25 PM
jagernut's Avatar
Senior Member
Thread Starter
Join Date: Jan 2014
Location: tehachapi ca
Posts: 464
Received 5 Likes on 4 Posts
Default

Also,I was told that the black wire in the same cloth harness with the coax wire,that hooks to the amplifier from ecu.That black wire is suppose to be attached to the outer mesh of the coax wire.I hope thats correct?Because I attached it.
 
  #35  
Old 05-24-2014, 08:38 PM
Doug's Avatar
Veteran Member
Join Date: Mar 2008
Location: Pacific Northwest USA
Posts: 24,762
Received 10,783 Likes on 7,114 Posts
Default

Originally Posted by jagernut
Also,I was told that the black wire in the same cloth harness with the coax wire,that hooks to the amplifier from ecu.That black wire is suppose to be attached to the outer mesh of the coax wire.I hope thats correct?Because I attached it.
I always get confused on that so refer back to some of the earlier postings on the subject...which might be in one of the other threads. Grant and some of the others can clarify that point.

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
 
The following users liked this post:
jagernut (05-25-2014)
  #36  
Old 05-24-2014, 08:43 PM
jagernut's Avatar
Senior Member
Thread Starter
Join Date: Jan 2014
Location: tehachapi ca
Posts: 464
Received 5 Likes on 4 Posts
Default

Ok,just checked injectors.I pulled 5 different ones.and checked with test light.Both sides of injector plug light the test light,on all the ones I checked.
 
  #37  
Old 05-24-2014, 08:47 PM
jagernut's Avatar
Senior Member
Thread Starter
Join Date: Jan 2014
Location: tehachapi ca
Posts: 464
Received 5 Likes on 4 Posts
Default

Also,If I pull one injector plug and crank eng,with test light connected to it,will it pulse?
 
  #38  
Old 05-24-2014, 10:34 PM
jagernut's Avatar
Senior Member
Thread Starter
Join Date: Jan 2014
Location: tehachapi ca
Posts: 464
Received 5 Likes on 4 Posts
Default

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.
 

Last edited by jagernut; 05-24-2014 at 10:48 PM.
  #39  
Old 05-25-2014, 06:57 PM
jagernut's Avatar
Senior Member
Thread Starter
Join Date: Jan 2014
Location: tehachapi ca
Posts: 464
Received 5 Likes on 4 Posts
Default

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?
 

Last edited by jagernut; 05-25-2014 at 11:01 PM.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Dimitrigregorio
S-Type / S type R Supercharged V8 ( X200 )
17
09-05-2019 03:47 AM
jjlu2
XJS ( X27 )
29
01-29-2016 07:02 PM
drewlabarbera
New Member Area - Intro a MUST
8
09-14-2015 07:46 PM
al_roethlisberger
XJ XJ6 / XJR6 ( X300 )
5
09-09-2015 09:14 PM
pnwrs2000
XJ6 & XJ12 Series I, II & III
5
09-03-2015 11:55 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


Quick Reply: 1984 xjs HE ign amplifier modual



All times are GMT -5. The time now is 01:28 AM.