Alfa Romeo Forums banner
1 - 20 of 276 Posts

·
Premium Member
Joined
·
1,564 Posts
Discussion Starter · #1 ·
Exciting times at the Perry household...tomorrow is the day I fire the engine and break it in. Tried over past few weekends and had to troubleshoot some small issues, specifically had to order a new cap/rotor from Classic Alfa.

Will keep everyone updated and (hopefully) post a link to hear the engine running!

In the meantime, any idea what this green wire connects to on the car? I can see it, or (I think) the resistor on any wiring diagram I have.

I hate loose wires....any help is appreciated.

Thanks, JP
 

Attachments

·
Registered
Joined
·
9,868 Posts
My friend's car neither has the green wire nor the capacitor (condensor) next to the relay. Does your car have the factory CDI ignition units or has the ignition been modified at some point in time?

Also, watch the black wire near the lock -- you may shear it off when closing the hood.
 

Attachments

·
Premium Member
Joined
·
1,564 Posts
Discussion Starter · #3 ·
Thanks Ruedi! I will watch that black wire....thanks for catch! These are the original factory boxes that were rebuilt by alfasrule recently. Will keep investigating.

JP
 

·
Registered
Joined
·
4,388 Posts
My car does not have that capacitor either and suspect as Ruedi said that it was added by a previous owner. Good luck with the start up; I hope all goes well.

Mark
 

·
Premium Member
Joined
·
1,564 Posts
Discussion Starter · #5 ·
Thanks, Mark! With all the issues sorted I am optimistic!
 

·
Registered
Joined
·
201 Posts
Hi
Just a thought as electric's are not a strong point of mine, could that be a suppressor that was once wired to the coils to help stop radio interference? I remember using them many years ago on a Ford Cortina.
Regards Geoff.
 

·
Premium Member
Joined
·
1,564 Posts
Discussion Starter · #7 ·
Geoff, good thought....radio is out of car so not sure I can tell. I appreciate all the ideas coming in though!
 

·
Registered
Joined
·
409 Posts
Hi JP, hope it runs nice! I just get an exciting moment firing it for the first time after 30 years of being storage and about 4 years of restoration. Spica x EFI dilemma is over. Spica is a nice "engineering artwork", runs very well.

 

·
Push hard and live
Joined
·
11,534 Posts
If memory serves, the manual specifically cautions against using any capacitors for radio noise suppression. That might be what it was intended to do, but Alfa thought it would be detrimental to the CD ignition system in some way.
 

·
Premium Member
Joined
·
2,649 Posts
There's a capacitor in the box. Don't need that, piece of JUNK. Even though when I install the units on other ALFA's I just keep it in there. It was probably assumed if a condenser was there it would protect the box from breaking. You can't place it on the coil cause it would defeat the purpose of the CDI unit since it is a Capacitive Discharge Ignition. The system does not even generate that noise on the radio, I have them in 3 of my cars.
 

·
Premium Member
Joined
·
1,564 Posts
Discussion Starter · #11 ·
Thanks John! I appreicate everyone's updates....now for the bad news:

Can't get engine to light. After:

1. Replacing bad cap/rotor
2. Verifying plug placement on cap per Montreal Ignition Troubleshooting Guide (and manually spinning old cap rotor out of car by hand to verify firing order lines up with plug wires - visualization exercise on my part)
3. Seeing good spark at each plug
4. Verifying when engine is @ TDC, rotor points to #1 plug wire
5. All grounds are good and making connection with boxes, coils, etc.

Engine wants to crank badly but wont. Only conclusion is that with trying to start is 10+ times over past few weekends, the engine is too wet with fuel. When I pulled the new plugs, they were wet and overwhelming fuel small came from heads.

I have plugs pulled, (lightly) covering the holes and letting the engine ventilate.

Any other ideas? Am I missing anything?

Thanks, JP
 

·
Registered
Joined
·
255 Posts
Haven't been following much of this thread, but if you're getting spark and fuel I would think its a timing issue either with the SPICA or the dizzy. Like Don, could the spark boxes be reversed? Have you tried swapping the A B coil leads to the dizzy? Double check the SPICA timing, I understand its a bit more tricky than timing a regular 4 cylinder alfa.

Tom
 

·
Premium Member
Joined
·
2,649 Posts
Your points need to need filed they are oxidized and they aren't providing sufficent ground to the box. If the ignition switch is on and the boxes aren't whining ~3K hz it means there is no power to them, you can hear it!!!. I had to do this to my points to get the PUMPKIN started this Spring!!! Middle wire is 12 volts. Fuse No.1 & 2 8A or the top ones on the fuse box. Do I need to take a ROAD Trip?
 

·
Premium Member
Joined
·
1,564 Posts
Discussion Starter · #14 ·
Edgar: engine sounds great. That is EXACTLY the sound I want to hear in mine.


Tom, Thanks for the thoughts. The installation of the ignition systems is exactly like the drawing on the last page of the attached document.

SPICA timing is verified...got it rebuilt from Wes Ingram and he puts a timing mark so timing will be correct.

John...you are always welcome. Would love the help.

Will check the points, I definitely only hear the fuel pump when ignition is on. Thanks for that tip.

Hopefully will have a positive update tomorrow.

Again to all the crew...thanks for the help!

JP
 

Attachments

·
Premium Member
Joined
·
1,564 Posts
Discussion Starter · #15 ·
John, I hope that posting the following in my ignorance may help others....

This is my first non Bosch FI Alfa so points are new to me. Attached is a pic and I am wondering if I am supposed to sand the curved metal band on the point while still in the distributor or take the points out altogether?

Thanks, JP
 

Attachments

·
Registered
Joined
·
26 Posts
Hello JP,

about the mysterious green wire :
here some pictures of my "original"-Montreal (with AC) :

you can see there was also a green wire, but please dont ask me where it come from or what is the function of the small box (I'm no electrician) !

Hope that help's you !
greetings
Andreas
 

Attachments

·
Premium Member
Joined
·
1,564 Posts
Discussion Starter · #17 ·
Thanks, Andreas. Good pix...mine has A/C too!
 

·
Registered
Joined
·
4,388 Posts
Andreas, the green wire you show in your photograph is also visible in JP's photo in post number 1 (and also in my car). He has another green wire attached to a condenser that has been added to his car in the past.

JP, Start looking at the center of your rotor in the above post, then drop down about 1" in your posted photograph and you'll see the nut that holds the rotor on; then, imagine a clock face at the 5:00 position from that nut. Your lower points are closed but they are visible between the nut and the whitish yellow wire where it is crimped near the spring, to the 'points set'. You can gently open the points with a small screw driver or your fingernail and slide a very small piece of 400 grit 'wet or dry' sand paper or a very fine 'points file’ between the points to clean them up, if they are not new.

I would also clean up the brass 'contacts' on each end of your rotor and the brass 'contact' that is midway on the left half of the rotor arm (in your photograph), where it runs inside the distributor cap.

If you have a battery charger, it is probably a good idea to fully charge your battery. The little 65 amp battery barely has enough 'juice' to turn over the V8 more than three or four tries. I'd like to go with a more substantial battery (like the group 31 the 164 has but it would not fit in the well). I may try a group 24 when I have a chance. Never give

Mark
 

·
Registered
Joined
·
9,868 Posts
Hello JP,

about the mysterious green wire :
here some pictures of my "original"-Montreal (with AC) :

you can see there was also a green wire, but please dont ask me where it come from or what is the function of the small box (I'm no electrician) !

Hope that help's you !
greetings
Andreas
According to the electrical schematic drawings, this green wire goes (via the Voltage regulator) to the D+ terminal of the alternator. The beige device inside the box is a ceramic resistor, used as "Alternator Excitation Resistor." The pink wires supply voltage from fuse 2 in fusebox A, a circuit that is energized when the ignition switch is turned on.

 

·
Premium Member
Joined
·
1,564 Posts
Discussion Starter · #20 ·
Thanks, Mark! I will follow that guidance!
 
1 - 20 of 276 Posts
Top