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How do you change fuel injectors 1989 3.0 Toyota 4 runner Front injector is dripping fuel.?
Wiki User
∙ 12y ago
To change the front fuel injector you will need to disconnect the battery because your computer will get messed up if you don't. then get the injector and a manifold gasket from a Toyota dealer or an auto repair shop, then you disconnect all the tubing that is going into the maifold, after you are done you take and unbolt the manifold and move it out of your way. then there will be a rod looking thing and there will be a couple bolts going into that. take the bolts out then just pull on it. the rod will disconnect from the injector and then you just pull the front one out, then slip the new injector in the old ones spot. then slip the rod back on and tighten the bolts, this will tighten the injectors so they wont leek or move, (you don't need any sealent or glue). then when you assemble the manifold take the old gasket off ( might be a little hard to do) then put the new gasket on. after that put all the hoses back on. don't forget to plug your battery back in. then start your truck and check for any leaks (gas, air,anything comming from the hoses, etc.) if everything is running o.k then double check the bolts and make sure they are tight. this process should take about 2 to 3 hours depending on how fast you work. well hope this helped!
-Sean
Wiki User
∙ 12y ago
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