Rough Idle Due to Intake Manifold Vacuum Leak on Mazda 626

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.

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Average mileage: 150,860 (98,000–199,925)
Engines affected: 2.0L 4 Cylinder, 2.5L V6
5 model years affected: 1998, 1999, 2000, 2001, more2002
18 people reported this problem
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Viewing 1 - 10 of 10 problem details
2000 Mazda 626 - 2.0L 4 Cylinder 98,000 mi,
Car idles roughly while sitting at lights and in park. The rpm's on the vehicle are very low as well.
2000 Mazda 626 - 2.5L V6 125,000 mi,
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.
1998 Mazda 626 - 2.0L 4 Cylinder 175,000 mi,
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.
1999 Mazda 626 - 2.0L 4 Cylinder 145,000 mi,
Rough idle, stalling, idled fine if you kept foot on gas. Intake gasket was blown out. Replaced gasket. All is well
2000 Mazda 626 - 2.5L V6 150,678 mi,
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.
2000 Mazda 626 - 2.0L 4 Cylinder
car cuts off sporadically
1999 Mazda 626 - 2.5L V6 189,000 mi,
rough idle
2002 Mazda 626 - 2.0L 4 Cylinder 99,000 mi,
Idles low in drive shuts off
2000 Mazda 626 - 2.5L V6 190,000 mi,
rough idle, engine surges especially when in drive. have to put in neutral to keep running when decelarating.
2001 Mazda 626 - 2.0L 4 Cylinder
intake gasket fail sprayed starting fluid to find leak replaced gasket