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 change fuel injectors in Chevy GMC 4.8?

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How much fuel pressure do you need for a Vortec injector?

They need to be able to hold 60lbs of fuel pressure. If in doubt take an old piece of tubing to the local auto parts store and get some double walled plastic gas line tubing. Ford uses quite a bit of it, as does BMW. 1. Carb Cleaner

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.

What are the symptoms of a bad Vortec Spider injector?

Symptoms of Bad Vortec Spider Injectors 1 Misfire engine codes (P0400-P0406 and P0300 codes) 2 Long starting, hard cranking 3 Poor idle and running at low-rpm’s, but fine at high rpm’s

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.

What kind of central port injection does a Vortec engine use?

The L35 and LF6 Vortec engines from the mid-90’s to early 2000’s had a “central port injection” setup which is known as the “spider”. The spider system uses a central pump with 6 tubes connected to it that lead to each of the 4.3L vortec cylinders.

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.

Where is the Maxi injector on a Chevy truck?

The MAXI injector is mounted in the center of the intake manifold on the 4.3L engine, and is hidden inside the split plenum manifold. Instead of spraying fuel directly into the manifold like a throttle-body injector, the MAXI injector routes fuel into six nylon fuel lines that have poppet-style spray nozzles on the end.

How many fuel injectors are in a Chevy truck?

If one comes loose, it can spray fuel where fuel doesn’t belong and create a potential fire hazard. On the second generation Central Sequential Fuel Injection (CSFI) system (1996 and up), the MAXI injector in the central housing has been replaced with six individual injectors, each of which feeds fuel to its own poppet spray nozzle.

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.

What is the code for a fuel injector failure?

If you are using a generic (not vehicle manufacturer specific) code reader; then you can expect to see codes beginning with P02. For example, a fault with an injector in cylinder one would give a code of P0201.

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.

Where to buy the CSFI Spider fuel injector components?

Where To Buy The CSFI Spider Injector Components And Save $$$. You can find this tutorial in Spanish here: Cómo Probar los Inyectores y Regulador de Combustible (GM 4.3L, 5.0L, 5.7L) (at: autotecnico-online.com ).

How does a MFI Spider fuel line work?

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. This long tube allows the end of the injector to be recessed away from heat and vapors that cause carbon build up on the end of the injector

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.

How to repair a GMC Vortec fuel injector?

1. Heat the hose like you did before. Heating only the very end will help you keep from kinking. 2. Slowly press the poppet back in, don’t rush it. 3. let it fully cool and give it a few good tugs to make sure it set.

Is the tamerx Vortec Spider fuel injector remanufactured?

This is a completely Remanufactured SCPI Fuel Injector. 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.

Symptoms of Bad Vortec Spider Injectors 1 Misfire engine codes (P0400-P0406 and P0300 codes) 2 Long starting, hard cranking 3 Poor idle and running at low-rpm’s, but fine at high rpm’s

Are there any problems with the Chevy 4.3 Vortec engine?

The 4.3 Vortec engines made from 1996-2002 (L35 and LF6) have been reported to have engine knock problems. In a properly functioning engine, fuel burns in even pockets instead of all at once. The pockets burn in even timing, in sync with engine cycles. Engine knock occurs when the fuel burns unevenly and out of sync with the engine cycles.

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.

What causes a fuel injector to misfire and hydrolock?

‘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: Important Tips And Suggestions. ‘Spider’ Fuel Injector Basics. Symptoms Of A Bad ‘Spider’ Fuel Injector Assembly.

How do you clean a Chevy TBI fuel injector?

How to Clean a Chevy TBI Fuel Injuctor. Spray the injector or injectors with throttle body cleaner, and gently clean the exterior and the tip of the injector with the brush. Do not insert any metal objects into the tip of the injector, as this will enlarge the nozzle tip, permanently damaging the injector. Replace the air filter assembly,…

What should the fuel pressure be on a 4.3L Vortec?

The fuel system in your 4.3L, 5.0L, or 5.7L Vortec engine needs at least 50 PSI of fuel pressure to start. The fuel pump produces much more than just 50 PSI of course.. but the bare minimum the engine needs to start is 50 PSI…

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.

How much does a fuel pump cost for a Chevy Blazer?

The best part is, our Chevrolet Blazer Fuel Pump products start from as little as $19.99. When it comes to your Chevrolet Blazer, you want parts and products from only trusted brands. Here at Advance Auto Parts, we work with only top reliable Fuel Pump product and part brands so you can shop with complete confidence.

What should fuel pressure be on GM 4.3L Vortec?

You can find this tutorial in Spanish here: Cómo Probar La Bomba de Combustible (GM 4.3L, 5.0L, 5.7L) (at: autotecnico-online.com ). The fuel system in your 4.3L, 5.0L, or 5.7L Vortec engine needs at least 50 PSI of fuel pressure to start.

Where are the intake gaskets on a Chevy Vortec?

The intake gaskets on the LB4 and L35 vortec’s are very prone to going bad which results in engine leaks, overheating, stalling, etc. The intake gasket sits between the intake manifold and the cylinder head.

What kind of fuel injector does a GMC Spider use?

This TamerX Central port Fuel Injection Assembly For The 1996-1999 Chevrolet/GMC Spider Fuel Injector Assembly GM 5.0L and 5.7L GM V8 Engines. This is a completely remanufactured SCPI Fuel Injector. The TamerX Spider Assembly is 100% tested to meet or exceed OEM Specifications.

What is the tamerx Spider fuel injector assembly for?

TamerX Spider Fuel Injector Assembly Central Port Injection We guarantee fit and function. This TamerX Central port Fuel Injection Assembly For The 1996-1999 Chevrolet/GMC Spider Fuel Injector Assembly GM 5.0L and 5.7L GM V8 Engines.

Where are the freeze plugs on a 2000 Chevy Blazer?

You can’t post conmments that contain an email address. where are the freeze plugs located on a 2000 Chevy blazer. HOW can i hook my phone to my 2000 chevy blazer radio to play my music .

How do you re pressurize a fuel line?

Re-pressurize the fuel system by shutting the valve and turning the ignition to the “on” position (the position just before the crank position where you attempt to start the vehicle). You will hear the fuel pump prime the system.

How can I tell if my S10 Blazer has good spark?

If you have good spark, check the fuel filter and fuel pressure at the fuel rail. Back firing could be timing,cam position or crank position sensor.Worst case scenario, timing chain or belt.

Why does the fuel pump keep burning out?

The Spider injector system started in 96. 95 and back had the old low pressure tbi. No 96 1500 had tbi 28 people found this helpful. Why do the fuel pump keep burning out so quick?

What’s the best way to repair a fuel injector?

Be gentle and it will come out. If you are using a heat gun it only takes a few seconds to work it out, but if you over heat the tubing it will become brittle and increase the chance of making your problem much worse. Step 3: You Got It Out!

What causes a fuel injector to stop working?

Over time the nozzle of the injector can become dirty and partially blocked. When you shut off your engine the injector will, soak up the heat of the engine. This causes any fuel left in the injector to evaporate, leaving behind hard deposits, inside the injector. Over time, these will eventually block the injector.

Why is there no pulse from the injector?

Used all original electronics and tbi. New wires, plugs, cap, rotor, fuel filter,etc… have spark, have fuel at the back of the tbi. No pulse at all from either injector?

What happens if there is no injection signal?

The ECU cannot pulse the injector without an Ne signal and will not start or run if this signal is not present. If the G signal is not present while cranking the engine, the ECU will not be able to identify when to produce the injection signal. The result will be the same, no injection pulse.

What kind of signal does a GM injector pulse have?

Purple/white wire with key on had barely any signal at all. Wires to the injectors have 12v with key on. I have fuel at the rear of the tbi but not sure of the pressure?

What should I do about my Chevy Blazer fuel injector?