Mazda
626
17

Rough Idle Due to Intake Manifold Vacuum Leak on Mazda 626

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: 146,622 (98,000–199,925)
Engines affected: 2.0L 4 Cylinder, 2.5L V6
5 model years affected: 1998, 1999, 2000, 2001, more2002
17 people reported this problem
Comments
Viewing 1 - 9 of 9 comments
Car idles roughly while sitting at lights and in park. The rpm's on the vehicle are very low as well.
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.
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.
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.
Rough idle, stalling, idled fine if you kept foot on gas. Intake gasket was blown out. Replaced gasket. All is well
car cuts off sporadically
Idles low in drive shuts off
rough idle, engine surges especially when in drive. have to put in neutral to keep running when decelarating.
intake gasket fail sprayed starting fluid to find leak replaced gasket