puzzling.

[GySgtFrank]

Originally Posted by mystery

alright so because i live in pensacola i have no shops to assist me with this car and im to headstrong to giveup so ive gotten my fuel problem fixed and now it will crank/idle for about 5 minutes and when it heats up and i start to release the choke it bogs up and conks out and theres no starting it again until it cools off completely. and im also runnin the nikki carb off a 83 and with just the distributer and brake booster vaccum lines hooked up everything else on the carb has been capped. not sure if its in some of that but any ideas where to start with this??

If it only runs with the choke pulled, you have a vacuum leak somewhere. It's pulling air in someplace where the carburetor can't meter fuel for it to run correctly (The choke is adding the extra fuel to keep it running). Since you have checked all the lines, get a can of starter fluid, or something flammable and start spraying around areas where air could be leaking in after the carburetor venturis. My best guesses would be either around the base of the intake manifold, carburetor base, the throttle shaft on the carburetor itself, or one of the fittings that the vacuum lines ran to on the engine itself. One other area I've had vacuum problems with on other cars is the brake booster. If the diaphragm is bad it creates a large vacuum leak that you can't see or hear. Easy enough to check by disconnecting and plugging that vacuum line. The bottom side of the intake manifold can be a bugger to reach, so make sure you use the small tube to reach those areas and confine the spray to small areas.

If the engine speeds up after applying the spray to an area, you have found your leak. Be careful not to blow yourself up spraying though.

The other possibility would be if the main circuit of the carburetor was clogged and not delivering fuel, but this would only apply above an idle. This does not sound like what is going on from your description.