You are having a cylinder missfire. take your car to a shop for a tune up.
No heavy water in the muffler.
a gas line over the muffler may have broke, or you car is older then 20 year old
I paid a total of 580 Canadian dollars. They had to do some complicated cutting and installing when attaching the muffler. The muffler cost just over 300, but tax, labor and an extra part really killed my wallet. A muffler with a hole in it will usually cost you lots in gas and you can fail your emissions test. An awful expense when it comes to older cars.
If gas is leaking from a Yamaha Razz muffler, then the float may not be set correctly. This means that it is not shutting the intake off.
no
2 examples are Gas analyzer-inserted in muffler Mass airflow machine-inserted in muffler Both measure gas emissions released from a vehicle.
A free flow muffler can improve mileage but by not by much. It would take a long time to recoup the cost of a new muffler.
It can, and usually it will make it worse.
This means the engine is running extremely rich. This can be causes by a leaking fuel pressure regulator or a stuck open injector.- TechJK ------------
You have too much oil in your gas, that's why oil and gas is coming out your exhaust.
carbon monoxide
The float on your carb is stuck down and letting gas flow into the oil thru the cylinder pass the rings and out thru the muffler.