The year, make and model info would be helpful but a large vacuum leak could do that.
backfiring.
I have a problem. I just bought a used 1995 Kawasaki 220 Bayou. The engine started running a little rough at first. Kept getting worse and then started backfiring through the exhaust. I had the carbeurator rebuilt but still runs rough and backfires. Cranks good and idles good. What could be my problem? Thanks
Backfiring is usually an indication of a lean condition. When it does it during cranking, it's probably timing related.
Backfiring.
If it is backfiring only when you kill the engine, allow the engine to idle a few minutes before you kill it. If it is backfiring while in use, check the intake gasket and bolts for wear or looseness.
Could be a hole or leak at one of the joints or cylinder head bolts / nuts.
Simple get the 4 liter engine instead more power and better MPG runs quieter and everything
Spark plug wires crossed, Bad distributor cap and /or rotor, Exhaust leaks close to engine, Worn camshaft/lifters, Burned valve, Also need to know if it is backfiring out the tail pipe or out the carburetor, it makes a difference.
if the engine is backfiring it will damage the maf,.
Hey John==Without knowing what you have, it is strictly guessing. Check the firing order. Make sure the compression is ok on the engine. GoodluckJoe
Hmm, I had a similar problem with my Ranger. It had an untraceable electrical problem, and we sold it for scrap. Symptoms include backfiring, severe loss of RPM before backfiring, dying unexpectedly, just about everything it shouldn't do. How bad is the sputter? Does it sputter, or does it sound like a large dying animal?
Can be engine miss or broken motor mount.