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I have a '78 4x4 with a 390,Np435,Np205 and my problem is that i recently had to put a new clutch in, and while I had the engine out I decided to put some new rod and main bearings in along with a new oil pump and gaskets, minus head gaskets.Anyway everything is back in it's place and now she will not start. She's back-fireing through the carb. I've gone through the basics, I put the timing marks at TDC and #1 piston is where it should be and so is the rotor. I've checked all my vaccum lines and they are where they should be. I've traced all my plug wires and they are in the right place, I'm really stumped here. This truck ran beautifully the day I took the engine out. Any advice will be greatfully appreciated.
