AutoLine Pro Universal Gas Cap Adapter For Easy EVAP Leak Testing - Includes Fuel Flap Bypass Opener Cylinder - For Automotive Smoke Machine Leak Detector

Worked AWESOME hooked up smoke machine, placed universal cap over my filler and the cap held as if they were designed to be with each other. 100% worth it, I reused the same one sticky cap 3 times and seal still holds as if 1st time each time. Very satisfied with the item.

When searching for an evap leak it matters where into the system smoke is entered. If the leak is between the filler neck and carbon canister the most effective place to inject smoke is through the filler neck. I used this adapter on my '99 S10 to find a small leak in the filler neck vent pipe. I was amazed how much more smoke poured out when input through the filler neck compared with when input at the purge valve. Smoke particles can fall out of the air flow when traveling long distances. I recommend this product. It looks and feels like of excellent quality.

Works very well with my smoke machine....perfect fit. I'm very pleased with this purchase. Would definitely buy again. I Highly recommend this product

I was impressed with the gas cap adapter. I was chasing an evap leak in my 2014 Jeep Wrangler and located the leak coming from a fitting on the top of the fuel tank in just a few minutes. I don't think I would have found the issue without using the smoke machine and this adapter. Well worth the money and the extra adhesive pads included will keep me supplied for years to come.

I had an issue and the seller was very proactive in helping

Awesome product helped me detect a fuel cap that was not sealling correctly. Really well made comes with 3m replacement stickys for re use. Not expensive at all with 1 diagnostics it paid for its self.

It worked very well, helped me find an evap leak around my charcoal canister. Only thing I don’t like is that it comes with a limited amount of double sided tape to use to secure and seal it at the filler neck. So if you plan on using this more than 5-6 times you will need to keep buying double sided tape. Other than that it gets the job done. Only reason for 4 stars.

Works well

The extension doesn’t work on a 2019 Jeep Grand Cherokee fuel fill port, conversed with Gavin in customer support, awesome person to deal with, very helpful and quick to respond. I also bought a smoke machine from these folks as well. I wouldn’t hesitate to purchase any of their products, knowing the support they provide! Strongly recommend them.