Engine Problems

I need some help. I just purchased my first CC (1970 Mustang w/Holman Moody). I am very new at this so keep it elementary for me. After replacing fuel pump, oil, oil filter I finally got the engine running two weeks ago. In the process of replacing the floor of the boat I removed the fuel tank and replaced it the next day. I tried to crack then engine from there on and it will not fire up. It is turning over but will not fire on up. I know the carburator is getting gas. I do not think I am getting any spark on the plugs. I replaced the spark plugs, cables and still no go. I feel like it is a distributer problem (Mallory Electronic Ignition). What is my next step in going back from plugs and cable to see if it is a distributer problem or where else should I look? Again keep it simple. This is the first engine I have really dealt with on my on. I do understand that messing with a distributer can be risky if you do not know what you are doing. Please help.

Let me get this straight. You had the boat running, tore out the gas tank, and floor, put it back together, and now it won't run. Did you disconnect any wiring besides the sending unit on the tank? Did you sever any wiring when you replaced the floor? Pull off a spark plug wire, stick a screwdriver in the boot and hold it close to a good ground source, and have someone turn the engine over to see if you have ignition spark>

Move the spark tester to one of the spark plug wires and try again but... this sure sounds like bad coil to me. There may be liguid in some coils but you shouldn't be able to tell The coil should be a heavy solid one piece coil.

Back to the drawing board. Replaces the the coil and ballast resistor tonight and the same thing engine turns over, one spark from the ignition coil and nothing else. As long as the key is turned shouldn't I be getting more than just one spark from the output plug on the coil? The coil I bought sounds like it is 3/4 full of oil also, so that must be how they are made. Where do I look next? Is there anything else between the ignition key and ignition coil that could be causing my problem?

I retested after reading the testing procedure for the Unilite Module. The voltage should drop to under 3V only if the LED's have an obstruction between them(i.e. rotor is in the close position). I have 3V constantly. Which probably means a voltage spike probably zapped the module. I have another module coming in on Thurs. and we will see where that take us. Let me know if anyone has any other suggestions.

Replaced the ignition module and she cranked right up on the first try and is running like a champ. Thanks for the help.