Check Engine Light Activated? Gas Cap, The Missing Link

Your gas cap can undermine your entire vehicle. If you attempt to drive with a damaged, missing or improperly installed gas cap, fuel vapors can ... 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 cap check light comes on when there is air leak somewhere in your system - it might be tank or cap or something else. A gas cap that is not tight can cause the fuel system to leak, triggering the check engine light. At Fort Collins Muffler & Automotive, we can ... 58Willys Well-Known Member Jun 18, 2024 Yes, bad gas cap can cause CEL. But pull the codes to see what's really going on. Okay? It could also mean. that you need to replace your gas cap. Because these do get old. And if you get a new one, it's perfect ... 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 check engine light could come on if the gas cap was loose or improperly tightened. It messes with the car's evaporative emissions system, ... a check engine light could come on. What's the most common reason? Loose gas cap. unhook the battery for 5 -10 min,it will clear the coad out of computer,rember to always turn the cap until ...