Answering my own question. Repleace with original Champion RC9YC plugs, do not upgrade to platimum. Car immediately ran great and initial hesitation was "gone".
Pouring the injector cleaner down the throttle body won't clean the injectors. You need to add the injector cleaner to the fuel tank for it to help you. Read the instructions on the container of injector cleaner.
You need to check the EGR valve, It may be opening to soon. Have you check the timing???
Diesel fuel injector cleaner will not hurt your unleaded gas motor. The diesel fuel injector cleaner is basically the same as your unleaded injector cleaner.
You completely waste the injector cleaner. It has to flow through the ports which supply fuel to the engine to do its job. That's why the directions tell you to put it into the gas tank in a certain ratio to gas. It mixes with the fuel in the tank, flows through the system and out of the injector ports.
more than likely your throttle body butterfly valves is sticking. you can clean it with throtle body cleaner but you must remove any sensors from throttle body first.
Clog injectors will cause slight hesitation. Try using a good injector cleaner and be sure to use premium gasoline in this vehicle. Low octine fuel will burn poorly and cause injector issue.
Fuel injector cleaner does not hurt anything,but most fuels already have a cleaning additive in their fuel.
no i dont think you can use diesel fuel injector cleaner in gas engines
Modern fuels have a fuel injector injector cleaner built into them. However I do recommend you use a good fuel injector cleaner such as Seafoam or Chevron Techron once a year.
If the injector wires are not broken where the air cleaner sets on top of the Throttle body, then I would replace the ignition module that's in the distributor underneith the dist. cap.
Fuel injector cleaner is a liquid which one puts in their gas tank to clean the engine and improve fuel performance. Fuel injector cleaner can be purchased at Canadian Tire, Walmart, and at many gas stations.
If you take the air cleaner top off and look down into the THROTTLE BODY you will see 2 injectors in the center of it with 4 electric wires hooked to them.