Hard Starting Hot

[Carl Spangler]

Wow................ this is almost like a scary sci-fi movie.

Sorry for the dark humor! Good luck with getting this carb sorted out or replaced.

[j_cst_10]

I give you credit for sticking with it. I’ve followed this from the beginning. I understand wanting to stick to a factory set up if that’s your thing.

I’ve owned plenty of vehicles with Qjets and I don’t mind them but honestly would never choose one of them over a Holley square bore for a toy vehicle. Part throttle is superior with the larger primary side. You give up some mpg but for occasional use vehicles not a big deal
In my mind. Super easy to tune and rebuild even for a novice.

Drive a Qjet engine then slap a Holley on with a cheap adapter and it will feel like a different vehicle.
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[HO455]

The fact is that some carburetors cannot be made to work properly.
Improperly machined at the factory, physically damaged at some point, allowed to get wet and corrode or just mismatched components. The tolerances inside are small and precise. A couple thousands here or there and the fuel and air cannot not flow as designed.
See my earlier post 162.
Any ideas on how many Qjets GM replaced under warranty?
How many of those are still floating around being resold as NOS carburetors?
I know of one very rare Pontiac Qjet that has been bought and sold a number of times for big money. A beautiful looking carburetor that simply will not work.

I wish you the best of luck finding what you want. If you can't find the problem and need a new core let me know and I can make some calls.