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First a little history/background....found a '77 300-6 to drop in my '60..sounded great, ran great. Installed Duraspark II ignition,a new intake gasket and exhaust gasket(donut) and new plugs, wires, coil, carb and it did nothing but backfire through the carburetor.
Now for the punch line...I have spent the last 3 weeks slowly adding each new piece as well as swearing an intense amount with the timing light light in one hand and vac guage in the other. I graduated as a metallurgical engineer on Saturday and have followed the "scientific method" through out this process... As I was goosing the carb by hand I found myself staring at the firing order cast into the intake..."I thought, huh, maybe I should check this closer!" So, LONG story short...DUHHHH! #1 and #6 plug wires were BACKWARD!!!!!
MORAL OF STORY: Scientific method is still overcome by sheer ignorance!!!!!
Truck runs freakin great now with the new goodies!!!! I had to make 3 victory laps around the block to to calm down a little!!!!!
Thanks to EVERYONE who replied to my futile attempts!!!!!!!
Ryan
Glad you got it figured it out. Now you can hold the timing light in one hand and the vacuum gauge in the other and not have to worry about intense swearing
Thanks for the chuckle this morning. Its good to know that I am not alone. It's very easy to overthink the problem and overlook the basics, I've done it time and time again.
A good lesson learned! Any time you work on an engine and it doesn't want to run right after, ALWAYS check the firing order first (as well as checking the distributor rotation to be sure the order is going in the right direction!). Then check it again. Finally have someone else check it. NOW go on to look for a different problem. The best of us has done this a time or two. Even on A Hot rod the outside engine tech they brought in did it. On our racing engines I would mark the cap terminals to help avoid a mixup in the heat of battle.
I bought a 75 F100 with a 460 that someone had messed with, couldn`t get it running so I looked the firing order up in the Ford factory shop manual. After checking and rechecking a friend spotted that the wrong picture/instructions was given, it was one from a Dodge!
I know that feeling. Was setting the points yesterday in my 63 Beetle and I get in and crank it and nothing...Again, nothing...Moral of my story: make sure you put the distrubutor cap back on when done with the points. Until they make wireless ignition systems I bet I will do something dumb like that again
I know that feeling. Was setting the points yesterday in my 63 Beetle and I get in and crank it and nothing...Again, nothing...Moral of my story: make sure you put the distrubutor cap back on when done with the points. Until they make wireless ignition systems I bet I will do something dumb like that again
I once forgot to put the rotor back in after changing points. I cranked and cranked, finally put the old points back in, cranked some more, and while leaning on the radiator with my hand on the rotor that was sitting there, it dawned on me what was going on.
oh i'm so not alone !!!! did i tell you about the time i dropped a "new" motor in one of my ol' bomber race cars and forgot to put the bolts in to the torque converter and it wouldnt move despite all the foul language i uttered ?? could go on and on but then you'd wanna know why i'm actually still walkin' upright an' wasting air !!! hee hee!!
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