LewZor

So. Took truck to mechanic and after two weeks of off and on working on it he found that the previous mechanic messed up the timing chain and ran the spark plug wires in some kind of weird way. I replaced the cap and wires thinking I switched them out one for one but didn't work that way.I installed the Weber and must have switched and exhaust for an intake so that when a load was put on the engine the special sensor that cuts out the exhaust spark it made the truck run like poop. He figured it out and It runs like a raped ape! Man, it's brand new again. Thanks for all the suggestions everyone. Brakes and suspension are next after A/C.

So here is the deal.I am goofing around with the spark plug wires thinking I might have gotten I3 and I4 mixed up during the carb replacement. Nope, But then I started looking at them and tracing them back to the cap. It's all messed up!!! Intake 2 is on Exhaust 3, Intake 4 is on Intake 1, etc. Datzenmike says something about valves and stuff. I think about the head. The head gasket was replaced about 7 years ago. I called the shade-tree that I used to replace it and he remembers that when he had it all buttoned up it wouldn't run right. He had to swap all the wires around until it did run right, etc. So when I recently replaced everything I didn't pay attention where on the labeled cap everything went I just swapped one-for-one and kept going. Now I am thinking that I will maybe purchase a timing chain kit and do it all up correctly. I should be getting the shop manual in the mail any day now. Any ideas where to get the kit and what brand to get? Thanks.

Oooo! How about this one! I barely made it up the hill! Sorry about the picture...

New coils, plugs (proper ex and int), wires, cap, rotor, fuel relay, battery, exhaust (cat back), timing set to 3 btdc. Everyone saying that a brand new Weber straight out of the box..."just slap it on and set the idle speed..." Does it cost anything to advertise it in the classifieds? haha

I went through all the exhaust before I recorded. It goes from about 1000 rpm idle to 550 in gear. When it's in gear the exhaust "pops" loudly every once in a while. I guess I have to figure out a way to record the sound better.

Part Two...

So, New Weber, I made sure all the fuel lines were hooked up correctly, and the fuel pump is doing 4psi at pump and between 2.5 and 3psi at the carb. Truck will idle like a kitten...until you put it in gear! You'll hear it run rough, then I will shift into N, then R, then D. Then video stops.

Hey! Quick update...Installed the OLD Fuel pump and got 4psi instead of 3 at the pump and about 2.75psi instead of 1.75 at the carb. Took it out for a drive and it seemed to be running great and then the "chugchug" started and it got to the point that I had to put it in neutral, rev it up, put it in gear and chug it back home. All in about 2 miles around the block twice.

So here is an update. Put in a new battery. measured the fuel pressure at the carb (1.75 psi) and at the fuel pump (3 psi). From pump to carb there is no filter as there is a filter before the pump. Could there be a blockage or something lowering the psi from the pump to the carb? Pump says 2.5-4 psi. Should I get a bigger one and then lower the pressure with a regulator? Or run a new line directly from pump to the carb?

Here are some pics?

I installed it right out of the box. Should I "tear it down" and blow out all the jets? The chugging makes me think that it's not getting enough gas, but it's all of a sudden. Oh, it's an Automatic. Before I decided to ditch the original I replaced the fuel filter and the fuel pump (pump says works between 2-4 1/2 psi).I did all the plugs and wires and coils too. When I set the timing I found that I cannot turn the distributor any further counter clockwise to move the timing mark past maybe 2-3 btdc. Can the distributor be off a couple "teeth?" Anyway, I put everything on according to the instructions except for the fuel regulator. I will get some pics of the install as soon as I can. Again, thanks everyone!

Oh shoot! So the chugchugchugchug thing that is happening is it's way of telling me to take my time getting up to speed? Maybe I should just swap it with the 32/36 version. My daughter will be the main driver of the truck. I just did the Tim The Toolman Taylor thing and wanted More Power. Would a fuel regulator work to help the situation? Thank you guys so much for the help. I like doing this stuff by myself as much as I can. Lew

I just put it on the truck straight out of the box.from Redline. I didn't know that it would have to be tuned.

Hello All! Put the K646-38 on my 1985 KC ST Auto today and thought I hooked everything up right. Now it idles awesome but when I take it for a spin it drives nice until I put the hammer down and forget going over 45 mph. It starts chugging pretty bad. Revs great when in Park and Neutral but in Drive it will go smooth until I give it more gas. Any ideas would be great. I set the timing and have the vacuum advance hooked up.