There is a noid light that will check injector pulses from the distributor. It plugs into the injector plug. Most common failure for inop injector is in the distributor module. Also check fuel pressure to see if the fuel pump is operating correctly. It should come on for 2-3 seconds when ignition key is turned to run. Chevy guy denver
The 91 Caprice is throttle body injected and has 2 fuel injectors mounted above a Rochester throttle body. The easiest way to check for an injector that is not working correctly is to remove the air cleaner assembly, start the car and visually inspect the base of the injectors for a smooth consistent spray pattern. If the pattern is absent or intermittent on both injectors it may indicate a problem elsewhere, the ECM or a maybe a wiring issue or sensor. If it is a single injector that is acting up it could be the injector or a wiring problem to that injector which could be tested with a multimeter.
Nope
P0205 means that the PCM detected a fault in the injector 5 or the wiring to the injector. Could be a bad injector number 5. Maybe the wires to the injectors or the PCM is faulty.
If it is just one injector, it is a bad injector or a problem in the wiring harness or connector for that injector. If it is all of the injectors, it could be a fuse, the entire injector harness, a broken loose or unplugged connector on the injector harness, or the fuel pump or fuel pressure regulator.
AnswerIs the injector actually jetting fuel into the throttle body? Ifnot the injector could be fouled. Make sure you have spark from the plugs. If not check the coil\distributor. if that doesnt work, make sure the vehicle is not backfiring because that is caused by a bad timing.. check your injector a+b fuse, and check the wiring running to the injectors...
The exact procedure varies for the engines that were available in this car. Roughly:Disconnect batteryDisconnect air intake pipe,Disconnect throttle and cruise control linkage and any linkage for the transOn most engines, not all, remove the upper intake manifold being sure to unhook any wiring and any hosesThe injector rack should be exposed.Disconnect fuel lines, unplug injectors, blow dirt away from injectors and lift injector rack out, using penetrating oil to lube the o rings at the base of the injectors will helpReassemble as reverse of disassembly.
Need to know what year 4.3L Blazer to answer that. Sounds like you got some bad gas and clogged it. That vehicle has throttle body injection. It has two injectors on the top. You say one doesn't spray. If I remember right, each injector has its own electrical connection. Switch the connections from one to the other then run it. If the same injector doesn't spray you have a bad injector. If the other injector doesn't spray you may have wiring problems or a bad pcm.
it means there is a fault with your injectors, wiring loom or ecu terminals try to clean them and then try it if it dont work like my dads did for a few weeks then broke he had to have all new injectors wiring loom ecu and pump costing £3500 + VAT
I have a 1999 GMC Suburban with the same problem but it did not show up until I had removed all of the wiring harness from the engine for a cylinder head job. I am going to look at the throttle position sensor and wiring connector tonight.
the problem is that injectors are forced into head . since head is aluminum and injector is steel after few years they become stucked together as they are one piece . you may expect that at least one injector will be broken during extraction . if you have spare/new injectors best way is to unscrew upper part of injector and chip the rest out with adequate tool . also if injectors are succesfuly removed there is problem with sealing new ones because during removal head will be almost certanly damaged . strongly recomending replacing whole head with injectors . used one in good condition is much cheaper than set of new injectors and head repair . This is absolute nonsense, make a injector puller sliding hammer type and loosen holding clamp and wiring then pull hard upwards and the injectors will come out.
It is real easy to think it is the injectors fault for a miss but it might not be. first check compression. If that is good check for spark. If that's good then noid light check ( hook up a light build the the injector wiring and make sure it pulses ). If all these things are good, then you have narrowed it down to a bad injector.
You are not getting fuel. Possible causes are fuel pump, fuel filter, wiring to fuel pump, fuel injectors, wiring to injectors, computer,