Car sat for years with engine sitting on ground wire harness chopped up , put engine back in, replaced wire harness ,new gas, new fuel filter , new fuel pump, replaced fuel lines, has injector pulse , spark to plugs , new cap and rotor , replaced all sensors , still will not start .
Fuel lines hook up backwards problem solved...
SOURCE: 90 k1500 tbi no fuel from injectors
from the sounds of it its going to be one of 3 things 1) the injector is bad or 2) there is no power getting to the injector 3) bad relay switch.
1) to find out if the injector is good. pull the injector out and with some wire ground one side and touch the other side to your battery, every time you tap the wire to the bat you should here the injector click..
2) if injector is good get a test light and test to see if power is coming out of the wires that go to injector( on some vehicles you have to have the motor turning over befor power is sent through wire, so have someone turn the key while you check the wires with test light)
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SOURCE: no start
could be a couple of things, have you run low, or run out of fuel lately, if so there is a good chance that you picked up trash from the bottom of the tank and clogged your injectors, or your fuel pressure regulator, if you are getting the correct amount of fuel pressers at the fuel rail then i would recommend popping an injector out and have someone turn the key on, if you aren't getting a good healthy mist out of the injector, then chances are they are clogged, and depending on how clogged they are you may need to replace them, i worked as a chevy mechanic for many years, and saw problems like this all the time, the placement of the pumps in the tank was not the best design, so when the tank gets below the 1/4 mark the pump is more likely to pick up trash from the tank, also the pump is liquid cooled and needs to be submerged, and below a 1/4 it is out of the fuel, this makes the pump run hotter and causes premature failure.
SOURCE: 1985chevy blazer t10 will not start
Check to make sure you're getting power to the coil when the key is turned. You may need a new ignition switch.
SOURCE: hesitates & starts hard after it is warmed up 1992 5.7 gmc truck
You might try checking the timming if it is out depending on the milage you might need to replace the timing chain and guides good luck
SOURCE: I HAVE A 1993 CHEVY S10 BLAZER RUNS GREAT BUT NOW
I pretty much had this same problem what your problem is going to be is more than likely you have a pin hole leek in one of the fuel lines inside the plenum .
Fuel Pressure Regulator is located on the fuel rail.
1. Disconnect the negative battery cable.
2. Properly relieve the fuel system pressure.
3. Remove the air cleaner outlet tube(s).
4. Remove any necessary components to access the pressure regulator.
5. Disconnect the vacuum hose from the pressure regulator.
6. Remove the pressure regulator attaching screws.
7. Remove the pressure regulator from the fuel rail.
To Install
8. Discard the O-rings on the pressure regulator and replace them with new ones.
9. Lubricate the O-rings with clean engine oil.
10. Install the regulator into the fuel rail and tighten the retaining screws.
11. Connect the vacuum hose to the regulator.
12. Install any components removed to access the regulator.
13. Install the air cleaner outlet tube(s).
Removal & Installation
4.2L Engine
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