sorry to ask but i am having problems with 1 of my wood haulers. its a 1992 chevy 1500 2wheel drive carberated. it runs fine when the pedal is slightly pressed down. but when i try to go past the half way point its either like its getting to much or not enough but i checked the carb at idle and it was shooting in gas. i also could never get the engine to rev over 2000 rpms.i wish i knew more but im still learning engines.
Your description is not clicking real well with me, so just offering you a place to start, if I may?
To start with, pull the air-cleaner and start it.
Get to a point that you can duplicate the problem real well, or get to the stage that it craps-out predictably.
With a good flashlight watch down the carb, rev the engine to get a feel for when it acts up. You might be able to see something odd down the carb?
Pull the vacuum line going to the distributor and plug it, try and duplicate the problem by rev-ing it to the act up point.
With a rag regulating air over the air horn, or slowly closing the choke, see if you can rev it passed the problem stage?
With the PcV valve off, regulated with your thumb over the hose making a leaner mixture with your thumb to see if you can't get passed the problem stage?
If it's not the pick-up coil (eliminated or changed by plugging the vac-advance), not a rich or lean carb problem, keep looking...
Always keeping it simple, pull the dist-cap off and look at the rotor and the button from the coil?
Look for any burn marks in the cap or the roter, some will look like cracks or smokey sections.
Keep your senses keen, even jumping a tooth on the timing chain with a real high millage engine will toss you off track unless you pay attention.
Good luck.
