Ok, so I did the compression test on my el camino and the values are 160 to 165 lbs of pressure so It looks like the cylinders are in pretty good shape.I remembered that the previous owner had told me that he had replaced the spark plugs and dist,cap and rotor.
The spark plugs looked pretty dark and full of carbon so I said I am going to replace them again.I put in some new AC delco R45TS and new wires.I checked the timing and put initial timing at 8 BTDC as the manual recommends.I also replaced the dist.vacuum advance.
After putting everything back together and firing up the engine,that baby sounds great,no more missing. However,one thing that I cannot figure out and maybe one of you guys can help.This has been there since I got the truck.If I accelerate all of a sudden,the engine hesitates for a few seconds and than takes off.This hesitation is there at idle and during acceleration.
I have done everything to correct this problem but no cure yet.It has a Edelbrock Intake and a Edelbrock 1400/ 600CFM carbureter.
I had the carb. completely redone but still have the problem.I have the advance connected to ported vacuum from the carb.I also tried connecting to full vacuum but no help.This is what is crazy,to me anyway.If I disconnect vacuum completely to the advance unit at the dist.,there is no more hesitation.I can rev.up the engine full blast and will not hesitate.I know that the advance has to have vacuum to advance the timing at the right time so I don't want to delete the vacuum to the dist.What happens to the engine if I run it without the vacuum advance? Maybe somebody here has an idea as to what is causing this,I sure hope so.
Thanks to Texas82GP and all of you here.
Mando