Gas Cap Shenanigans The Surprising Connection to Check Engine Lights

Check your gas cap if the light comes on suddenly. A loose gas cap is a ... The test will show "Rejected" even if the check engine light is off. 1996 ... Check CAP application status · Submit CAP documentation · Search enforcement ... Engine and mechanical systems related to emissions performance. Evaporative ... a check engine light could come on. What's the most common reason? Loose gas cap. A loose gas cap Is the most common cause of a check engine light. Make sure to check your gas cap when you fill up your car and turn your ... Other related issues that could set off a vehicle's engine warning light include leaks in your gas fill hose, a faulty gas pump seal or gas cap ... In addition to a check engine light, some vehicles have a “check fuel cap” or “check gas cap” light. This light turns on when a problem is ... The cap check light comes on when there is air leak somewhere in your system - it might be tank or cap or something else. How about a check engine light for starters? A loose gas cap will not only let in grime and dirt, but it can allow fuel vapors to escape the fuel tank. These ... Engine Light On? · Don't let a bad fuel cap gasket tank your smog check test. No matter whether your car is old or new you could be wasting money and polluting ... The gas cap will make the check engine light go on. Same thing happened to me once. I cleaned the gasket on the cap and cranked it down really ...