A 1991 Toyota 4runner is bigger than a 1990 4runner
follow the spark plug wire to the engine head and there they are
Check the spark plug wires and spark plugs. You might have to test coils too.
You have to more specific, is it a turbo or non turbo motor?
how do you change the spark plugs on a 1991 q 45 infiniti
There are four spark plugs on each side of your 1991 Chevrolet engine. The spark plugs will be near the bottom of the engine.
I have the same vechicle, the gap is 0.031 inches, on both the 4cyl & 6cyl. That's out of the Haynes manual.
To change the Spark Plugs on a Previa (1991-1996) you have to remove the passenger front seat, lift the carpet and then you will find a cover on the floorplate that has to be removed. Once the floorplate cover is off you will see the engine. There is also a small cover over the spark plugs and wires that has to be removed. The 2.4 liter petrol engine uses small 16mm spark plugs and a small 16mm socket will be needed to replace the plugs.
go to the Toyota store n ask them if they don't no go on Google and type in this how toinstall rear speakers on a 1991Toyota 4runner
it mounted on the throttle body