Engine won't start - Chevelle Tech
Electrical & Wiring Troubleshooting electrical problems.

 
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post #1 of 10 (permalink) Old May 12th, 05, 3:21 PM Thread Starter
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Kevin
 
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Engine won't start

I have an MSD 6a ignition, MSD billet distributor, and blaster2 coil. I am having trouble getting the engine to start and run. I am getting spark, but it is not a hot blue spark, it is yellow. I used a screw driver in the #5 plug wire, and arced it against the master cylinder. Here is how I hooked up the switched 12V source to the MSD box. I took the resistor wire, and cut the lead to the coil. I spliced the resistor wire to the yellow wire to the solenoid, which was attached to the original lead. I spliced the 12V wire to the MSD box to the yellow wire to the solenoid. If this is not correct, how can I fix this?

TIA, Kevin

Kevin McHugh

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post #2 of 10 (permalink) Old May 12th, 05, 5:41 PM
 
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Re: Engine won't start

I don't know but you could look at this site for help http://members.aol.com/dvandrews/timing.htm
Good Luck
Hope it helps
ragman64
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post #3 of 10 (permalink) Old May 13th, 05, 9:24 AM Thread Starter
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Kevin
 
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Re: Engine won't start

Thanks ragman, but no help for my question.

Kevin McHugh

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post #4 of 10 (permalink) Old May 13th, 05, 10:02 AM
 
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Re: Engine won't start

Not a MSD expert. I think the proper way, for your set-up, is on page 12 of the instructions. You can download them from MSD's site.
www.msdignition.com
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post #5 of 10 (permalink) Old May 13th, 05, 1:01 PM
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Re: Engine won't start

Kevin,

I have the setup at home, if you can't find it email me and I will scan it and send it to you.

Fred.

Blue 1969 Chevelle SS 396 375hp 4 speed.

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post #6 of 10 (permalink) Old May 16th, 05, 9:39 AM Thread Starter
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Kevin
 
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Re: Engine won't start

I have the MSD instructions. My only question is whether it was ok to splice the 12V wire to the solenoid to the resistor wire while by passing the coil. I just want to make sure the MSD box gets turned on when the ignition is on. I think I read somewhere, that there is 12V coming out of the coil, but only 9V going in through the resistor wire. Now I have the 12V wire to the solenoid and the switched 12V source to the box directly splices to the resistor wire. The may both only be getting 9 V. However, the solenoid is engaging the flywheel.

Kevin

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post #7 of 10 (permalink) Old May 16th, 05, 9:57 AM
 
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Re: Engine won't start

There is no 12 volts coming out of the coil. The 12 volts you may be thinking of comes from the solenoid to the coil only when the key is turned to START.
If your ignition switch is OK, you don't need the resistor wire or the yellow wire. All you need is a 12 volt switched wire.
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post #8 of 10 (permalink) Old May 16th, 05, 1:57 PM Thread Starter
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Kevin
 
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Re: Engine won't start

John,

How are you laddie? Forgive me for being slow, but I can take the yellow wire to the solenoid off? How would the solenoid know when to engage, if there isn't a complete circuit with the ignition switch? There is a purple wire to the S terminal, and the yellow to the R terminal, correct? I hate this stuff, It makes me feel so dumb. If I take the resistor wire out of the circuit, don't I have to replace it with a regular wire to the solenoid?.

Kevin

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post #9 of 10 (permalink) Old May 16th, 05, 2:37 PM
 
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Re: Engine won't start

OK, I'll try typing just a little slower. I think what's confusing things is what the yellow and "R" terminal are all about. You know that after GM started putting in HEIs in cars there is no yellow wire or "R" terminal on the solenoid??
The yellow wire and "R" terminal are meant to provide 12 volts TO the coil only when the key is moved to START. This 12 volts comes from the "S" wire, goes through the solenoid, out the "R" terminal, up the yellow wire, and to coil (+).
When the key falls back to ON, power is shut off to solenoid "S", the solenoid disengages, and the internal solenoid connection between "S" and "R" is broken. At this point the yellow isn't doing anything. It's just there.
In ON, the coil is now getting power from only the resistor wire, at a reduced voltage.
HEIs like 12 volts all the time so you don't need the boost voltage (12 volts) and the reduced voltage (9 volts) that the points/coil set-up used.
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post #10 of 10 (permalink) Old May 16th, 05, 4:13 PM Thread Starter
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Re: Engine won't start

Thanks John, typing slower really helped

Kevin

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