Got fuel but no spark

[1fastredsc]

I just put the motor back in, installed everything, cranked for oil pressure, checked for leaks, all clear. Then i hooked up the fuel pump relay, and manually lifted the air flow plate to get it pumping, once i got fuel to the motor by checking for spray through the pop off valve in the air box, i checked for leaks and everything is fine. Cranked it up, tried to start it and nothing. Checked for power at the ignition, solid, checked for power at the coil, nothing, bingo. Why would there be no power at the coil if the ignition has power?

[1fastredsc]

Quick question to add as well, that ground wire coming out of the harness next to the coil, where do you guys ground it to. I grounded mine to the fan, but i'm thinking now that that might now be a good source of ground.

[1fastredsc]

Bump

[Yellowbird RS]

the coil ground it's ok check the gap in the points and check if you have spark in cyl#1 wire and coil.

[1fastredsc]

no points, this is a later model distributor. and the wires going to the coil have no power. plus my timing light hooked up to wire #1 wasn't reading anything. the system was working fine when i took the motor out last year, why wouldn't it work now?

[1fastredsc]

OK, quick update. I tried one more time this morning. I went looking through the electrical diagram and it says that pins 31/1 and A go to the coil directly. So i took my multimeter and tested resistence between the terminals 31/1 - A at the ignition box, and the wires at the coil to energize it. I got no resistence meaning that the connections are good, and there shouldn't be any breaks. Then i put a very small dab of dielectric grease in the two terminals that connect to the box going to the coil. Then i pulled the main spark wire going to the distributor to ground it out to the motor and see if it arches. No power at the coils sides, and no arching at the wire. Does it sound like the ignition is bad, or is it possible for the coil to be bad? Also if the ignition box hums when i turn the ignition on, does that mean it's good, bad, or possible either?

[Groesbeck Hurricane]

The humming from the ignition box might be a good or bad indicator. What type of box do you have? My PermaTune always whined until it went bad. The MSD does not whine. I do not remember about the Bosche.

Very basic question, please do not be insulted. I've done this to myself before: are all the connections fully seated? Did the ends of the wires go into the distributor cap? Have you checked the plug wires to ensure they are good? Is it possible the coil has gone bad?

Sorry to have more questions than answers, but I think these will help diagnose what is happening with your baby.

[1fastredsc]

I don't know how to test the coil, it's a bosche, all connections that i can tell are fully connected and triple checked, plug wires are new, and it's not arching when i disconnected the main coil spark wire.

[Slider79SC]

1fast,

Exact same thing happened to me just a month ago when I put our motor back in. Everything seemed fine but no spark.

It was that darn little green wire that comes out of the distributor. If it is cracked or bent and old then that could very well be your issue. It is responisble for sending the signal to the CD box so that makes it look like the coil is bad.

I got a replacement for $25 and it fired right up.

Do a search for "green wire" and you will find all of the info you need.

Good luck, and by the way, did you put the muffler on that I sold you?

[Groesbeck Hurricane]

I second the little green wire, and I forgot about that little bugger. If the insulation is cracked, replace it! This could be the root of all your troubles.

[1fastredsc]

Sorry guys, i was trying to finish this yesterday morning because i caught a plane to jersey in the afternoon, so now i'm on vacation. I'll continue messing with the car when i get back. Which green wire are you guys talking about, don't know where it is? Any Pics maybe? BTW, slider, yes, your muffler is installed. Search for one of my other posts, i'm sure you'll find a picture of it from the back.

[Groesbeck Hurricane]

The green wire is coming off the backside of your distributor, on the right as you look into the engine bay. There is a small connector that you would have removed during the re-build and then re-attached after putting her back together.

I do not have my books with me, but there is a photo in the re-build book and the CD.

[Lorenfb]

Check between pins 7 & 31 on the CDI connector. You should measure
600 ohms and about 1.0 volts A.C. when cranking. Be careful with the
green wire. The outer wire (shield) goes to pin 31.