Dangers in replacing injectors?


Asked by Sep 13, 2016 at 11:17 PM about the 2003 Ford F-150 XL Extended Cab 4WD SB

Question type: Maintenance & Repair

Is there danger in replacing fuel injectors? I do my own repairs and
maintenance and have had to use haynes and chilton to work through most
of  my repairs. When I looked up how to replace the injectors on my Ford
the repair manual states i need to contact a qualifies repair specialist. I
have never come across this before. Is there something I am missing?
Does it have to do with the pressure in the manifold?

2 Answers


Replacing the injectors is the same as any other repair with risks and safety precautions. If you know what you doing, than you should be OK. Personally I would suggest the repair manual add such statement to indicate a higher level of risk because your dealing with fuel. There is no pressure in the manifold. and injectors pressure would not exceed 40-60 pis, with very small amount of fuel in the line. Good luck:-)


If u want to be extra safe, remove fuel pump relay and started afterwards to drain pressure off the fuel rail, disconnect battery and rail comes out in 2 pieces, left and right. Nothing special about it other than fuel exposure

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