Engine Mechanical problem
1995 Chevy Blazer 6 cyl Four Wheel Drive Automatic 142000 miles
hi car pros.I have a friend that took her car in the shop and they said she has a bad fuel injector and want to charged her 900 dollors to do it. I was just wondering what all is there to replacing them on this truck.I know there under the fuel rail but thats it. Cuz I got all 6 done on my oldsmobile and it only took the guy like 30 min. And I dont want her to have to pay that. I heared there is a retaining clip in the fuel rail that is tricky but other wise its just like every other car. If you could give me step by step intructions it would be very much apprecated! Thanks!
Relieve fuel pressure.
Disconnect negative battery cable. Remove plastic cover on upper intake manifold.
Disconnect electrical harness connectors from TP sensor, IAC valve, MAP sensor and intake manifold tuning valve assembly.
Disconnect throttle and cruise control cables from upper intake manifold. Remove ignition coil, PCV hose and related vacuum hoses. Remove air cleaner snorkel.
Mark location of all studs for proper reassembly. Remove upper intake manifold bolts and stud nuts. Remove upper intake manifold assembly. See Fig.
NOTE:DO NOT attempt to disassemble CPI assembly. CPI unit is not serviceable and should be replaced as an assembly.
Remove injector wiring harness connector at CPI unit. Remove and discard fuel fitting clip. Disconnect fuel inlet and return lines, and fitting assembly. Discard "O" ring seal.
To remove CPI assembly from intake manifold, squeeze poppet nozzle locking tabs together while lifting nozzle out of casing socket from each cylinder. After removing all the poppet nozzles (6), lift CPI assembly out of casing