Cross-firing due to bad sparkplug wires (if so equipped), a bad distributor cap (if so equipped), too lean a mixture causing pre-ignition, vacuum leaks, too much spark-advance causing pre-ignition, overheating, insufficient octane in the fuel (if high-compression 350).
what is making my Lincoln ls v8 backfire under the engine
Out of time, or vapor locking if overheated.
iT SOUNDS LIKE IT'S OUT OF TIME ARE THE PLUG WIRES ARE CROSSED ( ON WRONG )
The thermostat on a Chevy 350 is under the housing at the engine end of the upper radiator hose.The thermostat on a Chevy 350 is under the housing at the engine end of the upper radiator hose.
I do not know of any snowmobiles that have a button like that. They all have a kill switch that shuts the engine down, and if you push it while under higher rpm's and release it, than there is a chance for backfire.
If a 9-horsepower Kawasaki engine is backfiring under load, you might need to clean or replace the air filter. The timing coil could be damaged as well.
i have a 1994 Chevy beretta and they are under the engine
under the engine
This is commonly caused by a fuel mixture that is too rich or improper spark n timing
Out of time or spark plug wires incorrectly installed.
A large backfire is most likely caused by a bad spark plug or plug wire. Unburned air and fuel pumped into the exhaust will often be ignited by the other cylinders still burning exhaust gases. Also check your ignition timing, if it is late and you have a rich mixture you can get a backfire. An exhaust leak will let air enter the exhaust under deceleration and cause a "popping" sound.
The thermostat for a 1999 Chevy Camaro V6 engine can be found under the hood. It is in the right side of the engine, under the throttle sensor.