LUVTruck.com

Hello,

So I got a motor from a junkyard, I had to lift it out with my bare hands, I went through a lot of trouble to get it!

So anyway I get it into my truck, and I also rebuilt my carburetor, and put it on. I finally get the vacuum hoses plugged or attached where they need to be, and get it to run-but poorly.

I get going to a job interview, and barely make it out of the gate and it has *no* power whatsoever and suddenly refuses to idle at all!

I need to know what that setnut and slotted setscrew do on the outside of the carb, facing the engine. They are both copper or brass, and it sits between the carb barrel and the valve cover, is sits sticking straight up next to the carb throat. It looks like it contacts maybe the coasting jet???

The Haynes manual says *nothing* about it, and I DID adjust it to try to get it to run.

P.S. yes my float is set right, and I did adjust my valves before I got the motor in.

I need to get this truck running good enough to drive on level ground so I can go to my rescheduled job interview. Any carb tuning tips you guys have for me?

OK so I got it to idle, and it runs through the powerband-relatively smoothly. Right off idle the engine hesitates and balks, but after that it runs pretty good-except for one thing.

There is NO power. The timing is good. I have to let out the clutch quickly to get it to go without dying, and even then I can floor it in 1st gear and it acts like I am climbing some huge hill, it barely goes at all. Forget 2nd gear.

Well, I found out what it was.

Skyypayne is right-the headgasket was TOAST. Cylinders 3 and 4 were bridged!

Everything is great now that I have replaced it (Except I stripped out a spark plug hole) except there is MAJOR hesitation, now off of idle. The major hesitation was originally why I rebuilt the carburetor and cleaned it out-so obviously the problem is still there, now.

What can cause such hesitation off idle? I have to rev the engine up by pumping the gas now just to get going from a stop. Any input on this??

well im glad i let you know about the headgasket! but, i have no idea why it would be acting like that, with a major hesitation again.

hmm. where is the hesitation. when you're trying to go? maybe its a tranny issue, or a bearing went out or something or it could be a timing issue. maybe it skipped a tooth, or the dizzy is off. check it out with a timing light

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The first thing I would do is take off the air cleaner, and with the engine off look down into the carb with a flashlight. Then open the throttle linkage by hand and see that it shoots a stream of fuel down onto the throttle plate when you open the throttle. If not the accelerator pump is not working giving you the hesitation. Was the piston cup replaced in the rebuild? Another thing that happens is when the carb is appart and inverted the little silver BB check valve can fall out unnoticed. If this is missing it causes a bad hesitation like yours. Don't ask me how I know!