most engines have a power band witch is different most engines build power from 3,000 RPM to 8,000 but really it could be that your manifold is not set right or you don't have the carb tuned to the engine some other problems is that your valves are sticking but the answer on the rpm is just how big of engine u have and if all your parts match.
If the engine is running good except for low power, low cylinder compression could be the problem. A computer test may show and possible engine codes as well, giving a starting point for troubleshooting.
Yes, it is possible. It will also cause severe loss of power.
If you mean the engine will rev up and down as it is running, it has been my experience that a dirty air filter is a cause of the fluctuation.
on a1995 ford windstar was running fine until power steering fluid leaked and foam up on to the engine
NO. That means the engine is running too hot. Check cooling system.
Your question makes no sense whatsoever. Please learn to formulate a cogent question.
Engine will loose power, engine sputters or stops running, GAS GAGE SAYS EMPTY
That means the engine is running HOT are overheating. Check engine coolant level, Thermostat may be BAD. Possible Fan clutch bad, Radiator stopped up. CHECK COOLING SYSTEM.
Indirectly it does. Gasoline powers the engine which powers the AC. Without the engine running the AC doesn't work. Also on many cars the AC will cause the cars gas mileage to be lower if it is running at maximum AC.
It is possible to overfill an engine with oil. It can cause some damage, but mainly it will decrease power and fuel economy because the crankshaft is turning through the oil which adds resistance to the engine.
If an engine was not assembled properly it could cause a low power complaint.If an engine was not assembled properly it could cause a low power complaint.
The starter needs power to crank the engine to get it running. Once the engine is running however, the alternator generates enough power to keep it running. But with no reserved power (a battery) the car cannot turn over.