1963 Merc 1000 repair troubles

[Mr. Disoranized]

I have a 1963 Mercury 1000 6cyl inline long shaft, the motor will crank over but it will not start. It has spark and all of the plugs are working. One big issue is that when I try to start it, it makes a big explosion out of the exhaust. Before it would not do it but after I changed the timing it started to do that. I have tried to change it after that but now I don,t know where to go.

 

[MrGiggles]

I have a 1963 Mercury 1000 6cyl inline long shaft, the motor will crank over but it will not start. It has spark and all of the plugs are working. One big issue is that when I try to start it, it makes a big explosion out of the exhaust. Before it would not do it but after I changed the timing it started to do that. I have tried to change it after that but now I don,t know where to go.

Have you checked the ignition timing with a timing light?

 

[crazymanme2]

You need to look at a manual to see how to set timing. Those motors have a timing belt under the flywheel.
Good luck

 

[Pappy]

You either have plug wires crossed or your timing is way out.
Look up the timing procedure for the engine and start there AFTER checking to make sure you have the plug wires on the correct cylinders.

 

[Mr. Disoranized]

Do you know why it whould be exploding like that?

 

[nccatfisher]

Because it is firing when it isn't supposed to. That is the result of crossed wires or being extremely out of time like Pappy said.