Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

A GOOD ONE!!!

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makomark:
motman - did you put the high voltage side together with a good silicone dielectric grease? I've seen those MSD systems find some 'tiny' electrical leaks, especially on tunnel boats. The spark energy will take the path of least resistance and those paths seem to multiply when damp. Make sure the boots on either end of the wires are clean, grease them up, and give it a whirl.

Cliff Ruggles:
Set the float at 1/4".

Have you checked the timing with a timing light to see if some of the timing is in at low rpm's, then falling out as the engine speed decreases?......Cliff

motman:
To all of the above yes, greased all fittings. Cliff just installed your bushing kit, boy that was sweet. nice drill bit..So here is what is going on. after total rebuild. I use a 1 inch plastic spacer and a flat gasket from spacer to manifold and the stock gasket on carb mating surface. on first startup choke in started fine let run until engine was at temp.checked to see if any timing was being pulled in at temp there was none. pulled down into gear and let it stand there and sure enough she started to cough, put back in park, slower than normal ilde but smooth, reved motor idle back up then back down. i even was watching the voltage on my dmm as this was happening there was a solid 14 volts on coil + and 13.38 on the - side. all is well on supply voltage. So at this point i am so pissed off that i shut her down and walked to the tool box and grabbed my adjustment tool for the mix screws. reached in to the window and fired it up. there was no problem after that i didnt adjust a thing even pulled her into drive no coughing no su ??? ???rging nothing. smooth as a babys butt. got any ideas.. thanks chris

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