Tahoe won't start!

[Ryno]

96 Tahoe, 350, vortec. Changed the injectors today. Truck fired right up, ran for about 15 seconds, and died again. Now it won't restart. Checked for spark, fuel, and everything is fine. I don't get it! Checked everything 3 times, and still no fire. Any ideas? Thanks!

 

Ryan

[mcreyaufmiller]

Why did you replace the injectors? Was there a problem before hand? Could this have anything to sdo with your problem now?

[mcreyaufmiller]

Document ID# 22013

1996 Chevrolet/Geo Tahoe - 2WD

Fuel Injector Replacement Central SFI

Removal Procedure

 

Notice

 

Use care in removing the fuel injectors to prevent damage to the electrical connector terminals.

 

The fuel injector is serviced as a complete assembly only.

 

Also since the injectors are electrical components, these injectors should not be immersed in any type of liquid solvent or cleaner as damage may occur. Fuel injector cleaning is not recommended.

 

1. Disconnect the negative battery cable. Refer to

 

Caution

 

Before servicing any electrical component, the ignition key must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.

.

2. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure .

3. Remove the Upper Manifold Assembly. Refer to Engine Mechanical.

4. Remove the Fuel Meter Body Assembly. Refer to Fuel Meter Body Assembly .

 

Disassemble Procedure

 

1. Disassemble the lower hold down plate and the nuts.

2. While pulling the poppet nozzle tube downward, push with small screwdriver down between the injector terminals until the injector is removed.

 

Assemble Procedure

 

Important

 

Each injector is calibrated for a specific flow rate. Order the correct injector for the application being serviced when replacing the fuel injectors.

 

1. Lubricate the new injector O-ring seals with clean engine oil.

2. Install the O-rings on the injector assembly.

3. Assemble the Central SFI fuel injector assembly into the fuel meter body injector socket.

 

Notice

 

Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

4. Assemble the lower hold down plate and nuts.

Tighten

 

Tighten the nuts to 3.0 N·m (27 lb in).

 

Installation Procedure

 

1. Install the fuel meter body assembly. Refer to Fuel Meter Body Assembly .

2. Install the upper manifold assembly. Refer to Engine Mechanical.

3. Connect the negative battery cable.

 

Document ID# 22013

1996 Chevrolet/Geo Tahoe - 2WD

[Ryno]

All that was done to spec. The old injectors were taking a crap. You can hear the injectors working when we crank it over, and after we stop, you can hear them working inside the intake. We also throughly cleaned everything with approved cleaners/ solvents from GM. Any help?

[mcreyaufmiller]

All that was done to spec.  The old injectors were taking a crap.  You can hear the injectors working when we crank it over, and after we stop, you can hear them working inside the intake.  We also throughly cleaned everything with approved cleaners/ solvents from GM.  Any help?

 

<{POST_SNAPBACK}>

 

 

On this end, no. Did you try unhooking the battery for 10 minutes or so. Maybe this will give the computer time to learn the new injectors/