1986 Toyota Pickup Repair Question
What could be the cause of a rough idle?
I noticed the 2 of the spark plugs were loose and thought that this might be the cause of my problems, but did not seem to fix the problem. I am now thinking that it might be a vacuum leak, but I'm not sure where/how to start inspecting aside from a visual confirming that all hoses are connected.
Are there any other potential causes?
1.Defective spark plugs
2.Inadequate spark/coil,defective spark plug wire.
3.Lack of compression
4.False air leakage.
5.Faulty fuel injectors.
6.Insufficient fuel pressure.
8.EGR valve that is leaking.
10.Throttle position sensor.
11.Manifold absolute pressure sensor
12.Mass Airflow Sensor
13.Idle air control valve
Note: If it doesn't apply disregard it-
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