2002 Mazda 626 Intake Manifold Vacuum Leak Causing Rough Idle

The intake manifold gasket can fail causing vacuum a leak and/or a rough idle condition. Replacement of the leaking gasket will be necessary to correct this concern.

Affected Model Years

This issue affects Mazda 626 model years 1998, 1999, 2000, 2001, 2002, .

21 people reported this problem

  • 2002 98,000 Miles
    Car idles roughly while sitting at lights and in park. The rpm's on the vehicle are very low as well.

  • 2002 125,000 Miles
    Whenever I sit at a light, in traffic or through a drive-thru my car shakes and makes a bit of noise. I took it to a repair show and was told I have an exhaust leak.

  • 2002 175,000 Miles
    Surged to the point of stalling. I ended up spraying carb cleaner at the point where the intake met up to the head and found when spraying the carb lceaner at the no 1 cylinder, the engine speed noticibaly changed. The Intake gasket was replaced and the issue was resolved.

  • 2002 150,678 Miles
    Car is all of a sudden riding ruff. If car is in park and on the speedometer moves from 0 to 20 mph. And finally feels as though transmission is slipping.

  • 2002 145,000 Miles
    Rough idle, stalling, idled fine if you kept foot on gas. Intake gasket was blown out. Replaced gasket. All is well

  • 2002 250,000 Miles
    Only When braking the engine idles very rough and having to put the trans. In neutral; to idle smooth

  • 2002 0 Miles
    car cuts off sporadically

  • 2002 99,000 Miles
    Idles low in drive shuts off

  • 2002 190,000 Miles
    rough idle, engine surges especially when in drive. have to put in neutral to keep running when decelarating.

  • 2002 0 Miles
    intake gasket fail sprayed starting fluid to find leak replaced gasket