incomplete combustion of fuel
By having more lubricants that will decrease friction and increase your efficiency
That might be the PCV pipe or some other vacuum leak. That will cause stalling.
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.
The most likely cause is a dilution of the fuel/ air mixture caused by a vacumn leak. check for a hissing sound near the top center of the engine.
The most likely cause is a dilution of the fuel/ air mixture caused by a vacumn leak. check for a hissing sound near the top center of the engine.
Intake manifold leaks will cause the engine to idle rough and get poor fuel economy. An exhaust manifold will have no symptoms other than the sound of the leak.
Sound like you're out of oil.
Faulty engine
Yes it can cause sound waves can travel through solids,liquids,but slowly in gases and air
The loud tapping sound can be caused by a complete heating of the engine. Worn tappets can also cause the tapping sound.
a loose or slipping belt
Detonation...Needs to be fixed immediately or will eventually destroy engine.