Why does your 86 K5 Blazer spit sputter and backfire when you accelerate?

bad gas try some dry gas

my jeep Cherokee Laredo did the same thing, it was the oxegen sensor, smelled like gas when you drive it and spit and sputter, especially at take off.

9 out of 10 times on that car it is bad wires. They get weak from the amount of heat put off by the exhaust manifild right there. Also plugs and distributor cap and rotor.

it will make it spit and sputter and tear up ur engine

There could be a few causes for a car to spit and sputter on acceleration. One common cause would be the engine not getting enough fuel, so it could be a problem in the fuel line, fuel filter, or fuel pump.

Check to see that transmission linkage not making contact with wiring while gear selector in forward position.

sounds like it is need of a tune up.

Possibly, especially if it is contaminated with water

it will spit and sputter or miss or just not have no power at all very sluggish

Clean the carbeurator and lube the throttle cable.

have the fuel pess. checked

Air and fuel setting out of adjustment on years gone by; on today's auto's probably a sensor.

Could be a bad ignition coil Have vehicle scanned to see if problem has set any codes

check and see if you are getting fuel ,spark and compreesion these are the three main things if you have all of these repost

It's lean. Check for vacuum leaks, and make sure the fuel supply is functioning properly.

Possible clogged fuel filter or bad fuel pump.

Needs a tune-up, and bad blower motor.

IF YOUR CAR IS HEATING UP(OVERHEATING) AND YOU STILL DRIVING IT, A FAULTY THERMOSTAT IS THE LEAST OF YOUR PROBLEM.

Synonyms for "Sizzle": broil, brown, buzz, cook, crackle, fizz, fizzle, frizzle, grill, roast, sear, sibilate, spit, sputter, swish, wheeze, whisper, whiz

my son has a 98 stratus 2.4 liter was doing it also changed plugs an wires seems to run great now hope it helps!! it has 200k on it also

Check your voltage regulator and alternator. You're getting enough juice to either run the engine or the lights but not both.

let me spit on you let me spit on you let me spit on you let me spit on you let me spit on you let me spit on you let me spit on you

Improper engine timing usually Could also be leaking / damaged intake valve(s) or on an older engine with a carburetor if the accelerator pump is bad it will spit back when throttled up quickly

If a 2003 Dodge Diesel has a bad fuel pump, the vehicle will probably not start. If it does start, it will not run very long before it starts to spit and sputter and may even stall.

because its junk so go get a new create engine It backfires because it's lean. The trick is to figure out why it's lean.