Thread: Very confused-chronic timing event

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I have seen many times where someone was complaining about the same issues that you have and more than once I found that the wires at the cap for #1 and #2 were reversed and sometimes 5 and 7 switched or the wires were parallel which can cause missing, backfiring and roughness.

Yeah ,I own a ford ,I would not know of all this engine rebuild stuff ,my 1986 mustang 5.0 has over 250,000 miles on it and I finally changed the spark plug wires from the factory ones a couple years ago
I figured they were due after 20 years......still passes cali emissions like a new car..

My 460 big block truck has over 250,000 miles on it and I just fired it up after sitting for 2 years and it started like it ran the day before......

I did just build a chevy engine ,they always come in pieces and need to be put together and rebuilt.....


I have seen chevy motors with alot of miles on them before,but not near as many as ford motors.

Fuel injection has made the biggest difference in motor life now that almost all motors are fuel injected they seem to last alot better than before.

OK guys. I turned the engine over by hand and watched for intake and exhaust valve openings. As I was doing this I was making sure piston was coming up on the compression stroke after the ntake valve closed. Cam and crank are synched.

I've relashed the valves walkintg the engine by hand one cylinder at a time making sure each piston was at TDC on the compression stroke. I used techinspector's method.

It's now set at TDC on #1 (via dial indicator). I'll get the distributor cap and test/install the wires again. I can't find anything in my documentation or on MSD's website on how to test the Blaster 2 coil to make sure it's good. I've been through testing the box and got a spark when I removed the short from the two wires. Anyone ever had a coil that fired intermittently yet tested ok on the ignition box ?? Just curious how to look for that.

Hopefully, I'll get it back together and start it this evening. I'll let you know how it goes.

Any other recommendations before I button this thing back up ??

Mike