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if they are getting carcon build up then you have a weak ignition control module and the wrong spark plugs . with the wrong spark plugs it is running and working hard
Do a complete tune up.. Spark plugs, wires, distributor cap, and rotor button... If it has coil packs that sit on top of the spark plugs.. Replace the spark plugs and cylinder number one coil
something to ponder over here as iam not sure what could be the problem here but if its a weak spark then it could be module /coil/crank sensor in that order .These problems will not show up as fault codes i dont think as they are working but not to full efficiency
It could be that you have picked up a batch of dirty fuel that has clogged the gauze input filter that is part of the fuel pump inside the fuel tank.
You will need to remove the pump assembly from the tank. Access to it is usually through a removable plate in the floor under the back seat. Once you have the pump assembly out allow the gauze filter to dry. You can assess the amount of clogging by shining a torch through the gauze and see how much light comes through. Clean it by brushing with an old tooth brush and blowing clean with compressed air. If there is a lot of dirt/rust in the tank, try draining it. You may have to repeat the cleaning process again in few months if the symptoms appear again.
If you indeed are getting no spark on any plugs, check your plug wire that runs from the rotor to your ignition coil- the one that doesn't go to the engine. Make sure the internal connections didn't pull out and get crushed back in or fall out. Try one of your other plug wires on it and see if it fires- won't run good but you will see difference and be done troubleshooting. Other than that, you bought the rotor button and and rotor as a set right? Make sure the button metal tip is contacting the cap. If you got the wrong one, it may sit too low for the contacts even if it is long enuff. If you were getting spark, I would just say you got the firing order wrong.
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