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Mazda Engine General \  Fuel Injectors

Fuel Injectors

Mazda Engine General Mazda Engine Mazda Tech
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replies 2
following 3
 
mxer201   +1y
Anyone ever experience a fuel injector that would not work after starting the motor when cold? Then after running for a few seconds it would start working intermittently, after several more seconds work normal. Did you end up replacing the injector or did some concentrated injector cleaner as I'm currently using fix the problem?
mullet   +1y
you can run the injector cleaner threw the vacume lines.. however that clears mostly top end.. but works better than the fuel additive stuff.
89b2200   +1y
Best way is to pull the fuel rail and injectors. Then with a 9V battery, energize the injector while spraying some carburator or throttle body cleaner through the opening. You have to get new injector seals when you put them back in.
Or you can send them out for cleaning and calibration to a calibration shop.

It is also possible your engine computer might be getting a wrong temperature signal from a bad engine temp sensor.
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