1999 lexus es300 how to find cylinder no.3 and 4 ?

Fouled spark plug or plugs or bad ignition coil or coils. Your OBD2 TEster should tell you which cylinders to check.

Fuel system Injectors fuel pressure/ filters fuel, fuel pressure regulator, if pressure is low it will run but not properly possible fuel pump in tank

hello,the fault code [generic-po306] is a cylinder 6 misfire,and can throw up manufacture specific p1135 and p1155. get a local garage to remove the number 6 plug from your lexus,and view the electrode end to see if it is 'oiled up'as you could have an internal engine problem,however it is rare to just have 1 cylinder with a specific problem,and will most commonly be the coil,you would be better off to replace all the 6 spark plug's and the 1 coil for that defective cylinder, hope that helps, regards.

Check the ignition system,when one of these goes out it take out another cylinder,you hhave a misfire,

take to local part store (autozone) and they will ck code for free have feeling going to be a p0300,p0301-p0306 which is a cylinder missfire start by swapping coil packs and see if missfire moves with a certain coil if so replace coil remeber the 3 cylinders in the front are 2,4,6,from front of engine let me know and pleases rate

P1305 Igniter Circuit Malfunction No. 2 (1998-2000 Land Cruiser, 2000 Celica & Tundra)
this code is a toyota code so i would say it means the coil but the generic code says its cylinder no 5

P0305....Cylinder 5 Misfire Detected

so somewhere their is a faulty coil

Replacing plugs is not a complete tuneup. Problem could be in plug wires or in coil that fires the plug. If you lookup codes and identify cylinders that are misfiring, try disconnecting that plug wire on both ends (plug on one end, coil on the other) and substituting a different one temporsrily. If your coils are mounted directly to the plug, try swapping coils between cylinders to see if the problem shifts to a different cylinder.

I have 1999 Lexus ES300. The problem is: Check engine light and SRS light stay on when ignition key out and off; But when I turn the key to run position the check engine light and SRS light not on? Now the car not start. Anyone who know this problem. Please! HELP. God bless America

cylinder 2&3 misfiring, inspect plugs if ok, mark and swap coil packs for known good ones clear codes, run eng brake torque it rev to cause missfire, repeat until check eng, lite comes on, recheck codes if changed cylinders replace coil packs if not, you have two bad injectors.

no, this is a fuel quality poor or water momentany, make this test: disconnect the negative battery terminal few minutes and reconnect,run the engine, drive and check









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