By having more lubricants that will decrease friction and increase your efficiency
incomplete combustion of fuel
basically, a muffler is used to reduce the sound that the engine produces:)
Sound like you're out of oil.
The letters "ou" make the "f" sound in the word "rough."
Old-style army jeeps were known for their rough engine operation, often described as "coughing" or "sputtering" and "clattering."
to reduce your sound on a trumpet, use a mute or play with less air
The sound of a Jeep can be described as a deep, rumbling growl when the engine is idling, often accompanied by the clatter of the tires on rough terrain. When accelerating, it produces a powerful roar, blending the sounds of a revving engine and the crunch of gravel or mud underfoot. Overall, it's a robust and adventurous sound that evokes the spirit of off-road exploration.
One can either reduce the number of sound producing items. Sound dampening technology can be used to reduce sound such as sound baffling or dampers.
I dont understand what it is that you are asking. Is your engine still running after 5 miles? Does it run rough at that point? If it is running rough, I would check out the automatic thermostat for your choke. On a 1990 model it may be all rusted up. This will cause the engine to run real rough and consume a lot of fuel.
Having a harsh, rough, grating voice or sound, as when affected with a cold; making a rough, harsh cry or sound; as, the hoarse raven., Harsh; grating; discordant; -- said of any sound.
I recently wrote a song where the vocals are supposed to sound rough, but not quite growling/screaming.
A part of a motor vehicle's exhaust system, serving to muffle the sound of the vehicle.