1986 Toyota Pickup Repair Question
Topics covered: Sensor, Spark, Spark plugs.
Mileage: 107,000 miles.
Mileage: 107,000 miles.
Asked on November 12, 2011
What could be the cause of a rough idle?
I have recently bought an 86 toyota pickup from the family of a recently deceased mechanic. Overall the truck seems to be in great shape.
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?
Thanks
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?
Thanks
Asked by dannybeesAnswer
Replied on November 13, 2011
http://www.2carpros.com/articles/engine-misfires-or-runs-rough
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.
7.Contaminated fuel.
8.EGR valve that is leaking.
9.Oxygen sensors.
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-
