1992 Chevy Silverado Blazer.
Complete tune up spark plugs,wires,cap and rotor.
Question: got the car about 2 weeks ago was sitting for about 4
months anyway at the beginning i had no acceleration if i tried to
accelerate it would bog out and make popping sounds out the muffler
so first thing i did was change oil. Oil filter. Air filter,plugs,wires,cap
and rotor... It improve about 20 percent meaning it has some
acceleration but if i try to force it a little more i still here the popping
sound out the tail pipe and still bogs out ....Meaning my truck right
now is a cow... It has 188k miles on it dont no much about the truck.
Answer: You could possibly have a clogged fuel filter that is limiting the
amount of gas the engine is getting, and causing it to bog down. Also,
if the vehicle has sat for an extended period of time, the gasoline that
was in it has probably turned bad and separated. You might want to
run a few tanks of premium through it to see if that helps. Another
possibility is a catalytic converter that is coming apart internally, or
blocked up with deposits. That would cause a bad hesitation and
popping when trying to accelerate. You may want to check timing and
make sure it is set correctly. I believe your vehicle should be at 0
degrees at warm idle. Quite a few things to check, I'd start with the
easiest like changing the fuel filter, putting good gas in it, etc.