What should I be looking for in a gas cap?

Does it matter what gas cap you use?

They will know what model and size gas cap you need for your car and probably have it in stock or they can order it for you. While this little part may be under-appreciated and often forgotten, a properly fitted gas cap will make a substantial difference in maintaining fuel efficiency.

How do I know what gas cap I need?

Replacement is easy, just pop into your local NAPA Auto Parts Store and tell the counterperson your vehicle’s make, model and year, and they will sell you the gas cap you need. Just make sure you hear that “click” every time you put the cap back on, because if you don’t, you are just asking for trouble.

How do I know if my gas cap is good?

To fix, expose the gas cap by opening the tank cover which is next to the compact box. If the gas cap appears tight, take it out and examine the seal that laps firmly to the cap. If the seal is broken, it won’t sit firmly on the gas cap, allowing gas to leak out. You should get a replacement gas cap seal.

Are all gas caps the same for all cars?

Yes they are, all cars and SUV’s have a universal gas tank cap size. Just because all gas caps fit every car, does not mean that the car’s sensors will work with every gas cap.

Are aftermarket gas caps good?

Never buy aftermarket or locking gas caps. They do not seal properly most of the time and may cause your check engine light to come on. Do not turn your vehicle on until the gas cap is replaced properly or your check engine light may come on and you might have to bring it into the Service Department for a reset.

How often should you change a gas cap?

50,000 miles

Unless your gas cap goes missing, you don’t need to replace it anytime soon. Gas caps are designed to last 50,000 miles or more. So long as you are taking your car in for routine maintenance, you will be immediately notified if there’s ever an issue with your gas cap by your trusted Indianapolis auto mechanic.

What does a yellow gas cap mean?

Having a yellow gas cap is a good indication that the car can use flex-fuel. If the vehicle has a capless fuel filler, a yellow ring around the hole where the nozzle is inserted indicates that E85 may be used. Using any octane level of gasoline in a flex-fuel vehicle is acceptable.

How long does it take for engine light to reset after gas cap?

As soon as it’s safe, pull over and make sure your gas cap is tight. Once you’re back on the road, your check engine light should go off within 10 or 20 miles.

Should there be pressure when removing gas cap?

The gas gauge measures the level in the tank by a float lever, not by pressure. So this doesn’t affect your gas gauge. The overpressure in your tank is completely normal.

How long does a gas cap last?

about 50,000 miles

How often should you replace your gas cap? In general, they last for about 50,000 miles but may need an early replacement if they get damaged.

Why do gas caps click?

This part is located inside the gas cap and is what allows small amounts of pressure to be released from the cap in cases where the tank is building excessive pressure. In many cases, the “clicking” sound you are hearing is caused by this pressure valve resetting itself.

Can you clean a gas cap?

Start by spraying the area with a degreaser, leave it on for a few minutes, and proceed to rinse the area. For the gas cap, use a petroleum-based lubricant, scrub it, and then remove the solution. For the final touch, spray it with a silicone-based solution to protect it from tear.

Can I use wd40 to clean my gas cap?

Spray a little bit on your gas cap to make filling up a squeak-free process. While WD-40 is great for small fixes in your car, when it comes to larger repairs you should only trust ASE Certified technicians.

Where do you put Vaseline on a gas cap?

We did this with my mom's 2016 Mitsubishi Outlander same thing happened gas cap light came on we cleaned it up we end up putting Vaseline petroleum jelly on a rubber portion.

How do you clean the inside of a gas cap?

That's not doing anything like that no concerns there is inside the gas cap it's nice and clean now simply spraying it and rinsing it off and then controlling.

What causes black sludge in gas tank?

The black gooey stuff is the result of alcohol in the fuel.

Can a gas cap cause the engine light to come on?

Fuel System Issues

Faulty gas cap – Your vehicle is pretty good at warning you of any potential trouble. Something as simple as forgetting to replace the gas cap could cause your “check engine” light to come on. This is because the gas cap keeps vapors from escaping the fuel tank.