Quadrajet on stock '78 350 idles fine drives like junk in truck
Stock 350 w/ factory Quadrajet in '78 4x4 Full Size truck.
Dual exhaust otherwise stock.
Start fine, takes a few more times turning over to start when warm.
If it has sat idling for 5 minutes or so. Take off WOT pull strong up to gear change into 2nd where it falls flat on it's face.
Give it a few seconds completely off the throttle I can accelerate again very shortly, falls on it's face again etc.
Can't keep a constant speed at any RPM and going up hill is a disastrous/maddening balance of feathering the throttle just to keep a MAX of 40mph, if I try WOT while driving it just about dies. Just very very very partial to no throttle keeps it alive.
Flat surface it's better but if I try and accelerate it does the same as mentioned above. The more load the worse the bog/cut out.
No backfires of any kind.
Revs fine in Park, although haven't held it at higher RPM's for extended time to see if I can replicate the symptoms in park. Under load especially uphill its gets really really bad.
Look forward to knee-jerk reactions.
Last edited by DQ81; 03-14-2010 at 10:12 AM.