looking for new injectors?
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just cleaned my injectors and fuel rail , replaced all of the rubber "O" ring gaskets and the truck runs fine. i have a 98 sport with a 5.9L with 138k miles on it. a trick i learned here on the forum for cleaning the injectors is to get a square 9V battery and hook a wire to each side. connect the wires to the plug in part of the injector( 1 wire to a prong) and you should hear a clicking nosie which is opening the injector. put a little carb/and choke cleaner in the injector while it's in the open position and then remove the wires so it will close. let the injectors sit for a few minutes then reconnect the wires and while the injector is open blow thru it in the opposite direction until nothing but air is coming out of the top. if you are not getting air coming out check the connection if you have the wires on the prong then your injector is bad. do this for each injector. after that then flood the fuel rail with the carb and choke cleaner. replace all of the rubber "O" ring gaskets on the injector ( make sure you lube them well ) then reinstall the injectors onto the fuel rail, install the fuel rail back into the intake making sure you don't get the tips of the injectors dirty, bolt it back down and reconnect the fuel line. turn your key on and off a few times to prime the system then start. it make take a few times but then it'll catch. hopefully this helps.
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Thanks for everyone's replies. I did have them cleaned at NAPA once. Didn't know about the 9v battery trick. The reason I am looking to get new injectors was #8 gives me a misfire. I think the #8 injector solonoid is not closing and allowing some fuel to drip into the cylinder and then the engine cranks for a second. When I start the truck in the morning or after work it starts right up with a tap of the key. Before I replace the injector I will try that cleaning with the carb cleaner, possibly a piece of dirt got in there.
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Thanks for everyone's replies. I did have them cleaned at NAPA once. Didn't know about the 9v battery trick. The reason I am looking to get new injectors was #8 gives me a misfire. I think the #8 injector solonoid is not closing and allowing some fuel to drip into the cylinder and then the engine cranks for a second. When I start the truck in the morning or after work it starts right up with a tap of the key. Before I replace the injector I will try that cleaning with the carb cleaner, possibly a piece of dirt got in there.
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