Q-Jet part throttle lean condition

I got it off Ebay. The basic kit was like $220 and came with an 8 foot cable and a weld in bung. I had to buy the 18 foot cable and the tailpipe adapter separately. The standard 8 foot cable wouldn't reach from the tailpipe to my front seat

 

Jason, see if the power piston is staying down at idle. Put a screw driver down the vent with the engine off. See if you can feel the piston go down, then spring back up. Then start the engine and put that same screw driver on top of the piston. Wing the throttle quickly and see if the screw driver pops up.

 

Dave, this is the tailpipe clamp. Innovate Motorsports #3728

http://www.ebay.com/itm/Innovate-Ex...ash=item4650f7d112:g:dVIAAOSw5HJXKotU&vxp=mtr

And this is the meter kit I bought-

http://www.ebay.com/itm/Innovate-LM...m3f17a8921b:m:mEkeQMT0dbwOaGBnmVc0FMg&vxp=mtr

And the 18 foot cable-

http://www.ebay.com/itm/Innovate-Mo...ash=item3613a34679:g:yMUAAOSwTM5Yt5Kn&vxp=mtr

Its gets a little pricey but this way it becomes a tool in your toolbox and can be put on any car your working on

Yep, did that one both carbs.

 

Are you sure the jetting is stock? Could someone have messed with it before you?

 

Who the hell knows. I don't even remember how the Riviera wound up with a Stage 1 carb on it. I didn't know I had one. I have to open it up and find out

 

Ok, more results...

Seems to idle now at 14.2-14-5. Pretty sure I can richen that up a little. Cruise seems to be about 12.9. So assuming the stock jets are in there, what rods do I install?

 

You need to verify the jetting is stock. Who knows what is in there.

 

Still haven't gotten around to it. Too many projects dividing my time. The carb in question is still sitting on the 430 in my Riv. And that car has been laying dormant since last year. Im getting around to getting that out of storage and back on its legs. Then trying to get that carb finally sorted out

 

I got back into this today but it didn't go quite as planned. As it stands now, the 71 Stage 1 Q-Jet is on it and runs pretty darn well. The "problem" carb is still on the Riv....

The car always felt a little sluggy even with a set of 3.42s out back. Never really looked into it that much because I don't race it. It goes to the store, Home Depot and some cruise nights. So first thing this morning, I start looking into its "slugginess".

First thing I check is to make sure the carb is opening up fully when the gas pedal is matted. I throw Jen behind the wheel and have her floor it. I look down the secondaries and guess what! The secondary throttle plates are barely cracked open!! Ive been running it essentially as a 2 barrel. I take my needle noses and bend the little tang on the linkage and adjust it so the secondary throttle blades are nearly vertical. Cool! Now that's gonna make a big difference! Now Im all hopped up to test drive it. I go to start it and nothing...just cranks and cranks and cranks!! Arrrgh!!

I clearly have no fire. Checked for spark- nothing. WTF?? The car was just used Weds and drove to its spot in the driveway. No symptoms whatsoever last time out. My first feeling was the Pertronix took a dump on me. I didn't know of a valid test procedure other than just putting the points back in, so.... Luckily, all the ignition parts I took out I put back in the Pertronix box in the glove box. I whip out the Pertronix and re-install the points. Adjust up the points and go to start it......nothing!!! Now Im starting to freak out.

I go back to square one and start trouble shooting. I diagnose it as a bad coil. I steal the coil out of Jen's 73 Mustang which is a Crane PS-20 Flamethrower. I throw Jen's coil in and VROOOOM!! Starts on half a crank. Sonofab....How the heck does a coil just "go bad" sitting in the driveway for 3 days? It has been raining for 2 of them though. Maybe the rain got to it? Who knows. Its an original Delco Remy so its as old as the car.

Anyway, so now we have a working ignition system. Onward I say. Might as well leave the points in for now. I set the dwell and adjust the timing to 10 degrees initial. Warm it up and go to take it for a ride. Running good. Row through the gears nice and smooth. I take off from a light and lace into it. As soon as the secondaries start to open, the car falls on its face. It feels almost exactly like I hit a rev limiter. Its like its got a bad set of wires on it. What now????. So lets think this through logically- the only real change is the removal of the Pertronix which was probably not the issue in the first place. So back in goes the Pertronix. Starts up with the Pertronix back in so that works. I make sure the timing is still on the money and go for another test drive. I give it a little gas and the stumble is gone. I get it into first and whack it! Front end comes way up and the little G70's nearly rip off the wheels!! The tires go up in smoke, the car is drifting sideways and the 455 is quickly roaring up to 5k rpm! Time to shift into second as the car is still sideways. Tires never got any traction and were still baking themselves when I let off. Holy crap what a difference!! Its like a put a different engine in the damn thing. So happy

Whew...Now that its all straightened back out, I'll put the "240" carb back on it next week and try and figure out that riddle

 

Thankfully my big block bruiser is fixed otherwise I wouldn't have anything to go to the grocery store in.

 

It can probably sit there with no coil on it for 6 months and she wouldn't know. That's how much she drives it. But now that I said that, she'll want to take it out this week!

 

To quote Han Solo, “ Women always figure out the truth, always “