Smoke test

2002 TOYOTA TACOMA
180,000 MILES • 3.4L • V6 • 2WD • AUTOMATIC
Avatar
TINO12345
  • MEMBER
  • 3 POSTS
Have evap issues, so replaced the gas cap, and filler neck tube going to the gas tank. performed second smoke test and still get smoke coming out of the gas cap area. is smoke coming out a normal condition?
Jan 21, 2017 at 2:35 PM
Advertisement
Avatar
WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
This is a seemed system where ever the smoke is coming out is the leak, you might need to get under the car to see it.

Jan 21, 2017 at 4:17 PM
Avatar
TINO12345
  • MEMBER
  • 3 POSTS
How can I close vent valve without a scanner?? Would I be able to smoke the filler neck if I remove from tank to isolate the problem?? Like plug all the lines but one and smoke it to see if it leaks thru the same area... Thanks
Jan 24, 2017 at 7:31 PM
Avatar
WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
There would be no point. You need to know that the vent valve is capable of sealing as it may be your problem.
Jan 24, 2017 at 8:54 PM
Avatar
TINO12345
  • MEMBER
  • 3 POSTS
Will a scanner from Autozone suffice for the purpose of my test?? Closing the vent valve ?
Jan 26, 2017 at 10:07 AM
Avatar
WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
No, those aren't real scan tools. They are generic code readers. Real, bidirectional scan tools cost $4000 and up.
Jan 26, 2017 at 10:11 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.