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Discussion Starter · #1 ·
Help starting 72 GT

I installed a Crane XR700 and a Petronix Coil. After toiling with it a fews (replaced rotor, wires, electric fuel pump) trying to get it to start I finally found that I can't get the shutter to line up with the optical trigger.

I lined up the timing mark with the timing pointer on the pully and made sure the rotor pointed directy to the mark on the distributer, but the obtical trigger is off. It does not line up with the shutter break points and I believe this is why I can't start my Opel.

I use a test light in the instruction for troubleshooting and the test doesn't flash on and off, it just dims just a tade bit.

Can anyone give me some idea's on how to get the optical trigger to line up correctly with the shutter break pointes?


Thanks for your help!...
 

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Ok I'll type it again was about to hit submit and aol kicked me off. Disregard the mark on the distributor housing for now. Loosen up you distributor and turn it with the key on and watch for the led on the black box. When it strobes is when you will be firing. Then make sure you are on tdc. You should have two oval adjusting points, one on the bracket for the advance plate and a long one on the shutter bracket. Adjust these until you are at the mark for your distributor and the led is on. Now snug your distributor and try cranking it. If the led on the box doesn't blink, your shutter is not located right. It should look like figures 8 and 9 in the instructions. Readjust to be sure everything lines up and fire it up. I had both brackets at thier outer adjusting points for it to all line up. Good luck.
 

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Qwick, make sure number one cylinder is on the top of the compression stroke, both intake and exhaust valves closed. The timing mark on the flywheel ball and pointer, can be lined up if the number one cylinder is on top dead center of the exhaust stroke. That is, with the intake valve closed and the exhaust valve open. Hope this makes sense to you.

Ron
 

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I started to mention that but figured or at least hoped I was the only one that 100% of the time got it 180 out.
 

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Naw, I've done it too. But not too many times after I finally got it figured out. With all the 2-stroke and 4-stroke engines I've got between my bikes and model racing boats, I've screwed that up at least once or twice. :D

Ron
 

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Discussion Starter · #6 ·
After getting tdc, do I put the spark-plug and wire back in the first cyclinder, because I was not able to get the optical light to strobe.

I only have the 180 degree's so I turned it slowly both ways. Do you think I may have destroyed the optical reader. I'm pretty sure I installed the wiring to the XR700 and Petronix Coil correctly.

I made sure I was tdc and when you mean on the exhaust stroke is that when the piston is on it's way to tdc?
 

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start with one thing at a time. TDC is where the ball and pointer line up. Tell me exactly how your system is right now.
 

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Discussion Starter · #8 ·
Everything is stock and the only mods is the XR700 and the Petronix Coil.

My dad had a Tiger 500 Capaciti (I think this how you spell it) Ignition. I removed it.

Just to tell you how I have the wiring:

1) black starter wire to (+ Coil)
2) transparent wire to (+ Coil)
3) (+ XR700) to (+ Coil)
4) Green wire to (- Coil)
5) (- XR700) to (- Coil)
6) black ground of XR700 to the finder (I sand papered it clean to the metal).

I have the wire order as 1,3,4,2

The other thing my dad did was put another trainy in, but there's a mark their. So when I'm tdc, I'm on the mark.

Anything else you need to know?
 

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To start at the beginning. Bring the motor around so ball and pointer line up. Turn the key on but do not try to start. With the locking bolt for the distributor loose, twist the distributor. If your led blinks everything is ok so far. If not check to see if the yellow wire is going to the - side of the coil and red is+. Black needs a good ground and the 3 wires in the plug are color to color. Next you need to verify that you have 12 volts at the + side of the coil. If the wiring is stock it will be a clear looking wire. Use a meter or light to be sure you have it. Next take the optical sensor out of the distributor and use any of the shutter wheels to trigger it. Again watch your led. If it blinks now your system is ok. Carefully put the sensor and shutter back in and adjust to get the blink when you rotate the distributor. Adjust the two adjusting points to get the sensor to line up with the rotor. Again check to be sure it blinks by rotating the distributor. Snug up the locking bolt and remove the valve cover. Look to see if you have tension on the rocker arms for either #1 or #4. Whichever has tension the other will be firing. If 4 has tension everything is right. If 1 has tension then you are 180 out. You can start over after rotating the engine 360 degrees or swap your plug wires 1-4 and 2-3. If all went well you should be ready to fire it up. HTH
 

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What I was wondering was is the sensor in or out? Have you verified power to the coil? You do know where the led is on the black box? It is a newer 700 with the led right? Did it have the 3 wire plug you had to plug the wires into? I was just trying to find out where you were at in this process. When you said trainy you ment tranny right? It does still have the ball in the flywheel?
 

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Qwick said:
Everything is stock and the only mods is the XR700 and the Petronix Coil.

My dad had a Tiger 500 Capaciti (I think this how you spell it) Ignition. I removed it.

Just to tell you how I have the wiring:

1) black starter wire to (+ Coil)
2) transparent wire to (+ Coil)

3) (+ XR700) to (+ Coil)
4) Green wire to (- Coil)
5) (- XR700) to (- Coil)
6) black ground of XR700 to the finder (I sand papered it clean to the metal).

I have the wire order as 1,3,4,2

The other thing my dad did was put another trainy in, but there's a mark their. So when I'm tdc, I'm on the mark.

Anything else you need to know?
With this coil hookup (stock), you will ONLY see 12V at the coil during "Start" . . . and ~9.5V any time the engine is running, but only ~5.5V with the ignition key in the "On" position, with the engine NOT running.
 

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The crane only requires 9 VDC. Most of the prints in the instructions are shown with the resistor before both the coil and the control unit. It will run on 12 too.
 

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Discussion Starter · #13 ·
nobody - I have been too busy to get back on the GT, hoping this weekend I can.

1) What I was wondering was is the sensor in or out? - Don't have the newer 700, the guy at the store told me it was discontinued, but out of desperation I brought it (dummy me, they had the Petronix Ignition and I should have brought it instead).

2) Have you verified power to the coil? - no

3)You do know where the led is on the black box?, It is a newer 700 with the led right? - When you mention black box, I thought you were referring to the Optical Reader box casing.

4) Did it have the 3 wire plug you had to plug the wires into? - ?

5) When you said trainy you ment tranny right? - yes

6) It does still have the ball in the flywheel? - no, I don't know what my dad had his friend do, but it seems the ball was removed and replaced by this mark. I can not tell if the mark is suppose to replace the ball, but when the piston is tdc or around tdc I can align both mark and pointer.
 

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On one of the shot sides of the black box, the one with all the wires, there should be a small LED (light). It should blink every time your coil is triggered. Finding this or at least finding out if it has one will help to determine what you have. It is also important to find out if you have power to the coil and crane system with the key on. I would also pull the valve cover to access another timing mark and to check which cylinder is firing. Just start there and hopefully everything will fall into place.
 

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Discussion Starter · #15 · (Edited)
The only led I have is on the optical trigger (sensor) that replaces the points in the distrubitor. The led is yellow and is located bottom side and there is also a black led on the top side of the shutter.

The black box in which these leds are located is shape like this braket "]"

ignor the "." I had to re-edit because the spaces callapsed my diagram.

...................---------+
black led.........0..|...|
...........................|...|
shutter..#####.|...|
...........................|...| three wires (gray, white and black) ----->
yellow led.......O..|...|
....................---------+
******************* Distrubutor

These are the only leds I have for the 700...

Where would the timing mark be located inside the valve block?
 

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The timing mark for the head is on the cam gear. There is a metal piece it lines up with on the block side. Now let me get this straight. From your optical trigger you have 3 wires that should go to a black box that controls it. Your power wires and distributor wires come out of it as well. This box is where the led should be. The box is like 2.5 x 3 or 4 inches. Does this sound like what you have? Is this a 700 or XR 700 and do you have a part # for the system?
 

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Discussion Starter · #17 · (Edited)
1) Now let me get this straight. From your optical trigger you have 3 wires that should go to a black box that controls it. - Yes, but the box I have is a gold color.

Your power wires and distributor wires come out of it as well. - Power wires yes, distributor wires no.

This box is where the led should be. The box is like 2.5 x 3 or 4 inches. Does this sound like what you have? - No

Is this a 700 or XR 700 and do you have a part # for the system? - XR700, CRA 700-0243

From the sounds of what you have I have the last model before the changed to yours. The guy at the car shop did say I was buying a discontinued model, and it sounds like I purchased the wrong model for this car :(
 

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I have searched everywhere for that model and I have found nothing. Crane isn't showing it as a valid part #. I'm sorry but I think you may be right, I can't even find data on applications for it. It might not be for your car. Is it possible to take it back?
 

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Discussion Starter · #19 ·
Naah.., they will not take it back, I'm going to have to take a lost on this one.

Whats the part number to the lastest 700 and I'll just order it or they do have a Petronix avalible for about $87 and should I go ahead and purchase it?

...and will this Petronix be easy to set up like the 700.

...the 700 sounds very nice with the extra features to help with the total objective of getting the ignition system running correctly.
 

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I personally would go for the one from OGTS. No muss no fuss. They stand behind what they sell and it will work on an Opel. Sorry for the problems you had but sometimes that happens.
 
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