1987 Mazda 626 BaseFACTORY OEM SERVICE PROCEDURE

Rotting Vacuum Tees (MAZ0056AP)

Publication date: 1970-01-01
Reference number: MAZ0056AP

ROTTING VACUUM TEES

ROTTING VACUUM TEES

TECHNICAL INFORMATION TIP

Reference Number(s): MAZ0056AP,Β Date of Issue:Β 

ROTTING VACUUM TEES

YEAR(S): 1986-87

MANUFACTURER: Mazda

MODELS: 626

ISSUE & TIP

On 1986-87 Mazda 626 models, fuel vapor may rot the vacuum tee under the throttle body. This will cause the vehicle to idle poorly and fail smog tests. The same vacuum circuit runs the air injection air control valve. Remove the intake duct and replace the plastic tee with a metal type tee. I have probably seen this problem 20-25 times in the past two years.

Courtesy of Import Service Magazine with thanks to:

Steve Spilman

Diablo Mazda

Walnut Creek, California

REFERENCE NUMBER

MAZ0056AP

NOTE: This information has been obtained from sources generally believed to be reliable. Use your own judgment before relying on this data. Neither the suppliers of these Technical Information Tips, nor lemon-25 Repair Information Company, LLC, guarantees or assumes responsibility for data accuracy or completeness, nor is liability assumed by the suppliers of these Technical Information Tips or lemon-25 Repair Information Company, LLC, for any claims or damages resulting from the use of this information.
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.