Help...No spark

[Bugman]

Our Shop project is a go kart with a 250 6 in it on a '77 Impala chassis. We can't get it to fire. It ran great for about a day, then started missing, now it won't fire at all. We're not getting any spark. On our second coil, and still nothing. We have 13-15 volts going to the coil, but nothing coming out. It's hotwired through a key switch, but even bypassing that doesn't help. Can you think of anything I might have missed? Thanks

-Shop Teacher Jeff

[Fastsporty]

Did you check the ground to the coil?

[Mr 42]

Sound's like a distributor problem.
have you checked the breaker gap?
are they clean?
Is the cable still connected to the dizzy and so on...

[MichaelDorman]

So if I understand this correctly, you are getting power into the coil, but no spark comming from the coil (i.e. you pulled the coil wire and grounded it agianst something and got no spark). If that is the case I would do as was previously stated and check your ground and all of your connections for shorts and quality of connection. just my 2¢

[Bugman]

Mr. 42, it's a breakerless distributer. I'll check the coil ground next hour and see what happens.

-Jeff

[Bugman]

The distributer has 2 wires comming from it. A pink one, and a green one. Which goes where?

-Jeff

[Mr 42]

Ooops I guessed i revealed that im a Ford Flathead guy http://www.jalopyjournal.com/ubbthreads/images/graemlins/smirk.gif
And know nada about the modern stuff.
Anyway ground check sounds OK,
And i would still lift the cap and check for lose wire's and dirt

[Deyomatic]

So, it's an electronic distributor? If so, I know I've never had any luck with electronic shit, either Pertronix or HEI. Throw some points in there and I'd bet she'll fire up again.

[four-thirteen]

sounds like a fried ECU. check the power to it with a meter. if you got power, then the box is bad. if the distributor is just a starndard inductive pickup, a mopar box should wire right up to it, so i'd try that, you do have a mopar ECU laying around, right? four-thirteen

[Bugman]

Standard chevy electronic distributer, not even HEI, but it had one of those square coils. That means no computer, just the bits under the cap. No spare ECU's either. The only Mopar parts in the shop are from my 392. I barley have any ford stuff. Unfortunatly, I live in Smallblockchevyville(tm).

I'm gonna try a few things, I'll let you know the results in about 2 hours.

-Jeff

[Bugman]

Turns out that the control module in the distributer was bad. I think someone left the power connected, and burned it out. Now all we have to fix if the excessivly leaking carb. http://www.jalopyjournal.com/ubbthreads/images/graemlins/smirk.gif

-Bugman Jeff