How do you change the fuel injector in a Chevy S-10?

Remove any engine covers and air cleaner ducts to gain clear access to the fuel injector rail that the injectors are mounted in. Unplug the injector wiring from the injectors. Remove the fuel filler cap to relieve pressure and disconnect the fuel lines from the injector rail using open-end wrenches.

What are the symptoms of a bad fuel injector assembly?

Symptoms Of A Bad ‘Spider’ Fuel Injector Assembly. The most common type of failure (related to the ‘Spider’ fuel injector) is usually not the assembly itself going bad, but the fuel pressure regulator going bad. The fuel pressure regulator is infamous for leaking fuel from its vacuum inlet nipple.

How much pressure does a fuel injection pump have?

Pressure-Packed Fuel Injection. Today’s diesel fuel injection pumps are under pressure – even more pressure than what was once considered “normal.” Around 15-20 years ago, it was common for fuel injector pumps to process fuel in a system at around 10,000 to 15,000 psi (pounds per square inch).

When to replace the CSFI fuel injector assembly?

The CSFI does use a MAF sensor and the plenum is plastic and was used from 1996 on up on the 4.3L, 5.0L and 5.7L engines. Also, when anything fails in the CPI type system, you have to replace the entire fuel injector assembly. In the CSFI system, all parts can be replaced individually.

Can a bad fuel pump start a truck?

Yes and have nothing. Well getting to start by adding fuel to the throttle body is not going to turn on some special switch that will send a signal to the pump and injectors. I’m sure you probably just have a bad fuel pump that doesn’t have enough pressure or volume to start the truck, but at running speed can keep up.

Is there a way to turn on the fuel pump?

There’s no way you have no signal, but then starting the truck by adding fuel will then turn on the injectors and pump. That’s just crazy. Good luck with that one. Once the truck starts and is running you can remove the jumper to the fuel pump and it will continue to run.

Why does my 1994 Chevy S-10 not start?

1994 Chevrolet S-10 4.3 tbi. I never get the signal to turn on the fuel pump or fire the injectors but if i poor gas in the intake once the truck starts it runs fine. Any ideas ? I have replaced the fuel pump relay oil pressure switch and computer.

How do you remove a fuel injector from a car?

Remove the 10mm bolts that secure the injector rail to the manifold. Remove the fuel rail and injectors as a unit. Remove the lock clips that hold the injectors to the fuel rail, and twist the injectors as you pull to remove them from the rail. Lubricate the injector seals with silicon grease.

How to replace the Spider injector on a Chevy?

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Why does my Chevy S-10 not start up?

Once the truck starts and is running you can remove the jumper to the fuel pump and it will continue to run. The only thing i can think of is that you are not getting the priming signal to the fuel pump, that the ECM if faulty. It turns over fine.

What are the symptoms of a bad fuel injector?

1 Thin Oil – When a fuel injector leaks, all of that fuel is not getting burned in the combustion chamber. 2 The Smell of Fuel – When your engine is getting too much fuel, your S10 can’t burn it all. 3 Engine Locks Up – Once too much gas gets in the oil, the motor will lock up.

What should I do about my Chevy Blazer fuel injector?

If your reading this then like I did you have been searching the web and under the hood of you GMC Jimmy, S10, Astrovan, Or Chevy Blazer trying to figure out what to do about that crazy injection system in your truck. Well you have a few choices 1. Buy a new spider set for a small fortune.

How to troubleshoot the’spider’fuel injector assembly?

TIP 1: You’ll need a fuel pressure gauge to troubleshoot the fuel injector assembly on your GM 4.3L, 5.0L or 5.7L pick up (van, mini-van, SUV). TIP 2: You’ll be working around fuel (gasoline), which is extremely flammable. Your safety is your responsibility… so be careful, use common sense and think and act safety all of the time.

How to order tamerx Vortec Spider fuel injector assembly?

Make sure this fits by entering your model number. Includes all necessary parts and gaskets to perform a complete installation. Ensures smooth engine operation, cleaner emissions, improved fuel economy, and increased performance. Includes complete gasket set that kits from other manufacturers do not offer. Free expedited shipping. In Stock.

What kind of fuel injector does a GMC spider have?

This TamerX central port fuel injection assembly for the 1996-2001 Chevrolet/GMC Spider Fuel Injector Assembly GM 4.3L GM V6 Engine. This is a completely Remanufactured SCPI Fuel Injector.

What does tamerx Spider fuel injector assembly do?

The TamerX Spider Assembly is 100% tested to meet or exceed OEM specifications. The replacement of your old unit with the TamerX Spider will provide cleaner emissions, improve fuel economy, and increase performance. The assembly comes with new Viton O-Rings, Fuel Pressure Regulator.

Why is my Spider fuel injector stuck open?

‘Spider’ Fuel Injector Misfire and Hydrolock (Troubleshooting Case Study) . This case study will help you diagnose a fuel injector (within the ‘Spider’) that’s stuck open and causing a Hydrolock condition. Contents of this tutorial:

What causes a Chevy S10 engine to blow?

Knock/Detonation – Detonation can cause your S10’s engine to blow. This is certainly the worst case scenario. Don’t ignore an engine that isn’t running right.

Why does my Chevy S10 smell like fuel?

Any gas that is not fired and sent out as exhaust ends up in the oil pan. When this happens it can decrease your S10’s engine lubrication to the point that it’ll lock up. You will smell fuel on the dipstick. The Smell of Fuel – When your engine is getting too much fuel, your S10 can’t burn it all.

What happens when fuel injectors don’t work?

Less Fuel Mileage – Your S10’s engine management computer is constantly adjusting the air/fuel ratio and timing to get optimal combustion. When the fuel injectors aren’t working properly it can’t do that and fuel mileage suffers. Knock/Detonation – Detonation can cause your S10’s engine to blow.

What happens when a fuel injector leaks on a Chevy S10?

Thin Oil – When a fuel injector leaks, all of that fuel is not getting burned in the combustion chamber. Any gas that is not fired and sent out as exhaust ends up in the oil pan. When this happens it can decrease your S10’s engine lubrication to the point that it’ll lock up.

Knock/Detonation – Detonation can cause your S10’s engine to blow. This is certainly the worst case scenario. Don’t ignore an engine that isn’t running right.

What kind of fuel injection does a GM Vortec have?

I n 1992, General Motorsintroduced a very unique fuel injection system on its 4.3-liter Vortec V6 truck engine. Dubbed Central Port Injection, or CPI, the system looked and functioned much differently than previous designs. The CPI system utilizes one main injector that pressurizes six plastic tubes housed in the in- take manifold.

Can a GM Vortec be converted to MFI?

This same unit can be installed on your 1996-2001 Vortec with no mods needed. The MFI (Multiple Flexible Injection) Spider incorporates a small electronic fuel injector at the end of the fuel line. Notice the long pintle cap tube attached to the injector.

Why does my GM Vortec engine not start?

This is partially due to PCV flow, but can also be an indication of a leaking fuel pressure regulator (arrow). Photos: Jeff Masterman CPI system at 54 to 64. However, many techs have encountered hard-start or no-start complaints with pressure readings as high as 56 to 57 psi on a cold engine.

Is there no fuel from injectors to start truck?

No fuel from injectors to start truck. When I try and start my 93 Chevy Cheyenne k3500 no fuel come out of the injectors. If I use starting fluid the truck starts and the injectors work great. Has died a couple times while driving, but mostly runs fine and then won’t start one turned off.

Why is my Chevy Vortec 4300 V6 leaking fuel?

In the L35 and LF6 engines, the spider injectors are known to leak at the pressure regulator and at the supply and return lines due to a design fault. Outside of leaking fuel onto the exterior of the engine itself, it can cause excess fuel to get sucked into the engine.

Where are the fuel injectors on a 2.2L Chevy?

The fuel injectors on a 2.2L Chevy are mounted on a fuel rail. A fuel rail is simply a metal, preformed fuel line; the rail has orifices above each intake runner and a corresponding orifice in the intake.

Where is the fuel rail on a Chevy injector?

The fuel rail sits on top of the fuel injectors. Notice that the fuel rail has two fuel lines attached. The fuel line that is connected directly to the rail is the feeder line; the other line is connected to the fuel pressure regulator.

What kind of fuel injection does a Chevy S-10 use?

A Chevy S-10 uses with one of two basic factory fuel injection systems. The early S-10 came equipped with a throttle body injection system that featured injectors mounted in a throttle body design that was similar in appearance to a carburetor.

How do you change the fuel line in a Chevy S-10?

Remove the fuel filler cap to relieve pressure and disconnect the fuel lines from the injector rail using open-end wrenches. Remove the 10mm bolts that secure the injector rail to the manifold. Remove the fuel rail and injectors as a unit.

What kind of fuel injection does GM 4.3L use?

‘Spider’ Fuel Injection Basics There are two types of the ‘Spider’ fuel injector assemblies used on the GM 4.3L, 5.0L, 5.7L engines and this article will help you with both types. In case you’re wondering, one type belongs to the Central Port Injection (CPI) system and the other to the Central Sequential Fuel Injection (CSFI) system.

How can I repair my Chevy Vortec fuel injector?

With this step be patient, you need too heat the black tubing right at the poppet to just the right temp. the safest way to do it is to dip the last inch or two in a pot of boiling water for about a minute. As soon as you pull the poppet out of the water start to work it out of the tubing with two pairs of pliers.

Where is the fuel injector located in a Chevy S-10?

The later models were equipped with port fuel injection that featured a single injector per cylinder, mounted in the intake manifold runner. Replacing the injectors in either of these systems is well within the average mechanic’s capability and requires only basic hand tools.

How do you remove fuel injectors from a Chevy?

Place the screwdriver between the fuel injectors and gently pry up on the fuel rail. It should not take any effort to remove the injectors from the manifold. Pry the fuel rail up just enough to remove all injectors from their holes in the intake manifold. Pull the injectors out of the fuel rail.

How do you change the fuel injector in a Chevy S-10?