[TedRamAirII]

Is there any good simple way to check fuel pressure on a QJet? seems like I would have to make a mickey mouse type of hoses and fittings to do it.

[JMB36TA]

So the donor carb didn't work very well, it ran worse. It spit, sputtered, popped, and idled rough. It didn't have a choke so that was part of the problem when I first started it but it didn't idle well after it warmed up. I'm going to put my old idle pick up tubes and power piston spring back in mine and see how that goes. I got the new throttle plates without the holes in them and tried to put them on last night but all 4 screws broke off in the shaft and I can't get them out. I also ordered a distributor tune up kit. I'm at a complete loss.

["QUICK-SILVER"]

Did the throttle blade screws turn at all?

Threads get peened/bradded, from the factory, to keep the screws from coming out. Some more than others. I've had to file the threads flush with the shaft, on some, before they would screw out. Looks like yours has enough threads hanging out the bottom to grab with keen nose pliars and screw them out the bottom.

If the only problem with this carb was idle, not sure I would change anything but throttle blades. And find some one that knows about the mixture screws.

Something would be bad wrong if a weaker power piston spring changed how much idle fuel the carb has. Piston at its lowest supplies enough fuel through the jets to run at highway speeds.

May need to get part numbers off the top, main body and base plate to see if this is even "one" carburetor and not a frankenstien put together. Kenth or Cliff can probably help with that.

Clay

[Tom Vaught]

Originally Posted by JMB36TA

So the donor carb didn't work very well, it ran worse. It spit, sputtered, popped, and idled rough. It didn't have a choke so that was part of the problem when I first started it but it didn't idle well after it warmed up. I'm going to put my old idle pick up tubes and power piston spring back in mine and see how that goes. I got the new throttle plates without the holes in them and tried to put them on last night but all 4 screws broke off in the shaft and I can't get them out. I also ordered a distributor tune up kit. I'm at a complete loss.

Common event for someone who has not done it before.

This right process is you Take a file and file off the "staked over" portion of each throttle blade screw until the screw is flush with the throttle shaft. Then you take a GOOD screwdriver with a proper tip for the screw to engage in and carefully remove each screw.

Replace the blades with non drilled blades and either install new screws and stake them in place or use loctite on the shortened screws. With the loctite they will be just fine.

After the first screw broke off, the screw was trying to tell you something.
Most would have stopped after the second screw broke off.

Tom V.

[JMB36TA]

Originally Posted by Tom Vaught

Common event for someone who has not done it before.

After the first screw broke off, the screw was trying to tell you something.
Most would have stopped after the second screw broke off.

Tom V.

Yeah you're right, I've never done this before and it's turning into a good learning experience. Now I know the proper way to remove the screws if I ever need to do it again. I don't know why I kept going, I guess I figured they were just old weak screws. I've had a few bolts break on me during the whole build so I really didn't think much of a little screw breaking.