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ignition lead diagram!!! urgent help required

 
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paulsmaroon924  



Joined: 20 Aug 2009
Posts: 176
Location: IRELAND

PostPosted: Wed Sep 02, 2009 5:28 am    Post subject: ignition lead diagram!!! urgent help required Reply with quote

hi, the P/O of my wagon has refitted the ignition leads in the wrong order, what is the right order from the distributor cap to the sparks please? pics please.


on the starter motor thread i started before thanks guys for the replys, the motor is f*&ked so i have ordered a replacement but also the grounds were bad so many thanks for the help on that.

when its running i can get it to the mot and find out whats really wrong with it!
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Smoothie  



Joined: 01 Jan 2003
Posts: 8032
Location: DE (the one near MD, PA, NJ)

PostPosted: Wed Sep 02, 2009 10:17 am    Post subject: Reply with quote

There's a pic of the distributor in the Haynes manual. No Haynes? Stop looking at pictures of pretty hinees for a minute and order yourself one.

The firing order is cast right into the valve cover - "zundefogel" or something similar.. You should find it says 1-3-4-2. Assuming the distributor is installed correctly, 1 is aimed toward the cars' rear-left, and the rest follow in order clockwise.
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'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox
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paulsmaroon924  



Joined: 20 Aug 2009
Posts: 176
Location: IRELAND

PostPosted: Thu Sep 03, 2009 9:36 pm    Post subject: Reply with quote

ok but the order of the cylinders is it 1 to the front or 1 closest to the bulkhead (driver) ??

is there a diagram or could one of you post a photo of what goes where please, its a reallly small but irritating thing to find anywhre on the net!

cheers lads
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ideola  



Joined: 01 Oct 2004
Posts: 15548
Location: Spring Lake MI

PostPosted: Thu Sep 03, 2009 10:11 pm    Post subject: Reply with quote

FRONT OF CAR ------->
firing order (front to back)
2 4 3 1

As Smoothie noted, this is stamped conveniently for you right on the valve cover. If you stand at the RHS fender / wing / front wheel, with the hood open, looking down at the valve cover, the #1 cylinder will be the right most cylinder (as indicated above and on the valve cover).

Now, the other important thing is to make sure your ignition distributor is properly indexed. As posted here:
ideola wrote:
Rasta Monsta wrote:
They should really put that firing order somewhere obvious, where you can see it.

As funny as that is, the thing that is not clearly marked in the engine bay itself is the direction of rotation, which can really screw you up! The dizzy rotates clockwise. This is marked on the dizzy housing itself, but usually in a location that can't be seen while installed in the car. Also, it's referenced in the Haynes manual, but if you don't have the manual handy, or haven't worked on plug wires in a while, you can forget the rotational direction

That said, here are a couple of things worth noting: First, with the cam gear at TDC as pictured above, you have to make sure that the ignition distributor is properly indexed. Secondly, the firing order is 1-3-4-2 in a clockwise rotation.

To verify proper indexing of the dizzy, remove the cap. On most of the dizzies I've seen, there is a small etch mark or notch just to the left of the two-pin connector on the dizzy itself. The ignition distributor should be inserted and rotated so that the rotor points to this notch while the cam gear is at TDC. The dizzy can be oriented in ANY fashion as long as the rotor points to this mark while the cam gear is at TDC. However, given the orientation of the vac unit and the two-pin ignition connector, the most convenient orientation will have the rotor pointing somewhat on an angle, sort of toward the driver seat.

Once you've verified that the dizzy is properly indexed, now it's a simple matter of putting the plug wires on in the correct order. The rotor rotates in a clockwise motion, so make sure you attach the wires accordingly. If you put the wires on backwards (i.e. counter-clockwise), the #1 and #4 cylinders will be correct, but the #3 and #2 cylinders will fire in reverse order. The car will run, but on only two cylinders. So, with the dizzy properly indexed, reinstall the cap. The #1 lead connects to the first post that corresponds to where the rotor should be currently pointing; continuing clockwise, the #3 lead connects to the next post, then #4, and finally #2.


If your distributor is properly indexed, the plug leads should attach something like this...
1 3
2 4
...again as viewed from the same position I described above, noting that the distributor rotates clockwise.
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Smoothie  



Joined: 01 Jan 2003
Posts: 8032
Location: DE (the one near MD, PA, NJ)

PostPosted: Fri Sep 04, 2009 11:18 pm    Post subject: Reply with quote

ideola wrote:
If your distributor is properly indexed, the plug leads should attach something like this...
1 3
2 4

Now I'm confused.
I would say (viewing from the left side of the engine compartment), they appear as -
4 2
3 1
you
-Or viewed from the front, looking back into the engine compartment -
2 1
4 3
you

-But I'm pretty sure it was stated clearly enough with
Quote:
Assuming the distributor is installed correctly, 1 is aimed toward the cars' rear-left,

(The cars' rear-left for an RHD car would mean toward the passengers' seat.)
Following clockwise, 3 is toward the front-left of the car, 4 toward front-right, and 2 toward your RHD cars' drivers seat.
(Left and right of the car are always determined as if you're sitting in the car, facing forward.)
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"..it's made in Germany. You know the Germans always make good stuff."


'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox
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ideola  



Joined: 01 Oct 2004
Posts: 15548
Location: Spring Lake MI

PostPosted: Fri Sep 04, 2009 11:54 pm    Post subject: Reply with quote

I always thought front, rear, RHS, and LHS were universal...this is what I mean (have to put this in a code block to preserve the spacing):
Code:
           LHS            F
R |---------------------| R
E |                     | O
A |                     | N
R |---------------------| T
           RHS        X


If you stand where the X is, and you properly index the ignition distributor as I describe above, when at TDC the ignition rotor should point toward the left rear corner of the car (yes, on a RHD car, this will be the rear passenger seat).

Now, you can, of course, attempt to install the ignition distributor in any orientation, as long as the rotor points to the #1 plug when the engine is at TDC. But as I describe above and in the cross-referenced posts, I've found it difficult to properly orient the vacuum housing and the two-lead plug in any position other than as described. This means that the ignition leads will be connected (and rotate) like this...
Code:
1 > 3
^   ˇ
2 < 4

...when you're standing where the X is in my diagram above.

Maybe this pic will help too:

You can clearly see the #4 ignition post labeled with a green paint pen on my dizzy cap in this photo, as well as the orientation of the dizzy that I am referring to.

Here's another view, this one of SONIC06's engine bay, viewed from the same position, again, the #4 plug lead being the one closest to the photographer, just behind the vac housing:

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