How to change the spark plug wires in a lexus 1996 lx 450 need a diagram to show where the wires go

There should be an EPA sticker somewhere in the engine compartment, which will show vacuum line routing, firing order, and spark plug gap. If that sticker is missing, you may need to contact a Lexus dealership, give them your VIN number, and have them provide the information for you.

Spark plug Firing order.

Could be many things. Sounds like its not firing on all cylinders. Open your hood and run the car after dark, look under hood and look for sparks from your plug wires. Sparks will indicate bad wires. There are many causes for your car to run poorly. It could be a bad coil or plugs ,sticky valves to burnt valves. Bad gas, water in gas, ect. My daughter had a problem that sounds similar, it turned out thatfor her last oil change at Walmart they only added 5qts of oil without draining it first. 1.5 gallons over full of oil caused engine to fight against itself to run. She was lucky it didn't destroy the engine and every gasket in it.

courtesy Justanswer.com

Wouldn't anyone about to work on a timing belt or chain,
obtain a diagram before they started?

There is no way to do that job without it

Try a local repair shop that has Alldata ,they may print
what he needs

The reason you can not locate this, is because it is part of the fuel pump module insid ethe fuel tank. No real service is necessary unless you are replacing the fuel pump.

filters must be free flowing to remove dirt and carbon the better the filter the better the engine will be kept clean

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follow the spark plug wires to where the go to the motor

Hope this helps, couldn't find diagram.

Firing order 1-8-4-3-6-5-7-2 --------------- | 2 4 6 8 | | | front | ----- | | | 8 || | | 1 4 || of | |2 3|| | | 7 6 || | | 5 || vehicle | ----- | | | | 1 3 5 7 | --------------- Distributor rotates clockwise