Vapor locking ...try a new cap
No. However, some cars will display a "check engine" light on the instrument panel if the gas cap is loose or missing.
Take the oil cap off of engine and pour in oil.
you just take it to the car shop and let them do it
can the distributor cap make the your car take 3 or 4 tries before it crank up
Take off your distributor cap and use a blow dryer to dry out the cap and components. Its possible you have a hair line fracture in the cap.
The cylinders will misfire making the car run very poorly. Probable hard starting as well.
The usual spot for #1 cyl on the cap is pointed directly at the #1 cyl on the car itself, anyway it's to the right of the center plug wire connector on the cap, looking directly at it from the front of the car. firing order is 18436572.
I was taught that removing the oil cap while the engine is running was a bad idea. But I would suggest you call the service manager at the dealership for your car and ask them.
If you are locking your car before trying to take off the cap, this is the problem. The cap won't come off if the car is locked.
Do it when the car is cold if the radiator is hot fluid may be forced out when you take off the cap.
On a 1994 Lincoln Town Car : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap
On a 1997 Lincoln Town Car : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap