Spider Injector for 96 - 02 Chevy, GMC and Oldsmobile
Here we have the OEM replacement Spider Injector for the 96-02 GMC, Chevy and Oldsmobile with the 4.3L motor. This fuel injector assembly is a direct fit OEM replacement. The unit shown in this video can be installed in the vehicles without any modification to the unit or the vehicle.
How to change a SPIDER INJECTOR on a Chevrolet V8
Amazon has spyder injectors for about $300
How to change a SPIDER INJECTOR on a Chevrolet V8
Fix It Right! - Fuel Injection System Replacement
Fix It Right! - Fuel Injection System Replacement (S1E6)
Demonstrated on a 1999 Chevrolet Blazer 4.3L V6 Vortec 2WD.
In this video, we demonstrate the process of removing the stock fuel
injection assembly, and install an upgraded assembly that converts the
vehicle to full multiport fuel injection. This is a fairly straightforward
repair to resolve a common issue with the older CFI and "upgraded" CSFI
systems used on GM's Vortec engines: sticking poppet valves that dump raw
The stock fuel injection system for 4.3L V6 and 5.7L V8 GM Vortec engines
consists of a central injector housing containing either a sequencer (for
the older CFI design) or six injector solenoids (for the newer CSFI
redesign) and six tubes with a poppet valve on each tube end, each of which
are inserted into the intake manifold. The poppet valves are subject to
clogging from microscopic debris in the fuel, varnish buildup, etc. Once
one or more of them clog, the engine starts to run rough and mileage starts
to nosedive. Since the engine control computer will detect a rich condition
due to excess fuel consumption and will begin leaning out the engine to
compensate, watch for long fuel trims moving strongly negative if checking
the vehicle with a scanner capable of reading OBD-II datastreams.
The replacement fuel injection assembly is a new design, and instead of
using poppet valves and a single injector and sequencer manifold or central
bank of injectors, the new assembly replaces each poppet valve with a
miniature injector on each tube end. This design has a number of
advantages: improved throttle response since there's no transit time for
pressurized fuel to travel down the individual injector lines, improved
fuel economy (not the least of which is from not constantly dripping fuel),
increased horsepower due to improved
fuel delivery efficiency, and increased reliability since the injectors
have a more forceful open/close action. Generally speaking, customers that
have had this procedure performed had positive opinions on their vehicle's
IMPORTANT NOTE: Please read the disclaimer text at the start of the video
before attempting anything shown therein. Take your time, take care, and be
About the "Fix It Right!" video series:
"Fix It Right!" is a series of how-to videos intended to give
do-it-yourselfers basic instructions on proper vehicle repair and
maintenance. All of our videos show real repairs being performed on real
vehicles by real technicians in a real auto shop. (Repairs are filmed and
shown with the permission of the vehicles' owners.) Although there may be
more than one way to perform any particular repair (and in many cases there
are lots of ways!) we try to focus on the methods that will be safest and
most expedient for DIYers with limited access to tooling and equipment.
We will also occasionally be showing repair processes that are too complex
or dangerous for DIY, or require specialized tooling, expertise, equipment,
and/or certifications. Those episodes will highlight the importance of
hiring a professional auto technician for tasks that are not DIY-friendly,
and demonstrate why such tasks are best left to professionals.
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HOW TO CLEAN THROTTLE BODY 95-99 5.7L Vortec
EHOWTO shows you how to clean your Throttle body on your 95-99 chevy or GMC
with the 5.7L vortec engine.
This video is purely helpful information. I am not responsible for anything
you do to your vehicle.
94 s10 blazer missfire and CPI spider injector repair
truck started running very bad like the injectors were leaking so i popped
the plenum off and found that whoever had it before me fixed the gas lines
with rubber line and zip ties and wrapped the small ones in electrical
tape. so i went ahead and took my new set of injectors from my totaled
blazer and still running bad. so i thought well just replace the coil that
i also had a spare. and what ya know it runs better than ever.
DIY Testing & build EFI Fuel Injector cleaner
In this video I detail some quick tests and some not-so-quick fixes.
A dirty or stuck injector is not usually a fatal problem for the part. You
can clean injectors yourself with a little ingenuity, or use an injector
cleaning service. With the method I'm using, you won't get a sheet that
measures how much fluid is flowing, but if you use the right solvent you
can at least remove whatever is blocking it so that it can flow like it did
when it was new.
So the journey begins.
Vortec Throttle Body Modification 5.7 and 4.3
Easy Throttle body modification that increases throttle response and Horse
Power . This is for all 5.7 5.0 and 4.3 Vortecs.
DIY Fuel Injector Cleaning & Repair
This is the end result of a few hours of work and $60 because I didn't have
a 1/4" NPT tap in any of my kits. I could have done this for less-than
$40. The BG products were donated to the cause.
The REASON you want to use 20 PSI is precisely because of how peak-hold
type injectors work. The injector signal sends a 4v spike to open a
peak-hold type injector quickly, then maintains its open condition with
only 1 volt. Really, it's a current thing and there's a longer
explanation, but that's it in a nutshell. When you put the injector in its
operating pressure, it takes more than a AA battery to open it, but you
don't want to sustain that much current with a momentary switch and your
expensive injectors. This isn't in the video because this warning wouldn't
be as clear. Unless you can simulate the injector pulse precisely, don't
try it. 1.5v is enough to open it below its operating pressure. If you
open it and THEN apply pressure, you can flow as much pressure as you can
throw at it.
I don't discourage anyone from getting their injectors professionally
cleaned and balanced, but in my case, I didn't feel that was necessary.
In my first video, I thanked the seller for these injectors and happy to
know I got a great deal on high quality parts. My gratitude is even
greater because I had problems with them. It gave me an opportunity to
help others troubleshoot these kinds of problems when purchasing used
parts. A different idiot might have blamed the seller for peddling crap,
demanding their money back... but that would only be because they didn't
even know what they were looking at.
This particular idiot knows what high quality parts RC injectors are and
how to clean 'em. $250 + $60 still means I saved about $150 on a brand new
set. We all benefit because I bought these and I'm grateful! Let the good
How To Check Fuel Injectors
Scotty Kilmer, mechanic for the last 42 years and counting, shows how you
can quickly check if the fuel injectors in your car are operating
correctly. visit scottykilmer.com for free answers to all your car
GM Troubleshooting Part 5 - Fuel System including filter, pump, injector, regulator
This is part 5 of a multi part video series about how to troubleshoot any
ignition, fuel injection or timing issue. I describe the fuel system and
what I did to test it. specs referenced in the video: fuel pressure (in
PSI): TBI (9-13), MFI (41-47), CMFI (58-64), CSEFI (55-61). Those
pressures are for key on, not running. When running normal range is
3-10psi less for all injection systems. Injector resistance (in ohms): TBI
1.16-1.36, MFI (11.6-12.4), CMFI (1.37-1.77). In the video I forgot to
mention it is fairly difficult to bend the spider legs of the new injector
unit so they fit in the intake holes. Pay attention to the way the
original was installed (legs going over/under the nut kit lines) and try to
replicate the original routing. Oh... and I forgot to mention that if you
have a fuel lean condition, spray quick start in the throttle body and see
if it starts... if it runs on quick start, you have proven your condition
is a lack of fuel.
UPDATE Dec 8_2011: I still have the 2 moulded fuel injector lines (new
never used) and I want to sell them... if you need these lines send me a
private message and we can work out a deal. Thanks.
GM CPI Leak (part 1)
1995 Chevy S-10 Pick-up 4.3 L VIN W engine. How to troubleshoot and repair
a Central Port Injection system with an internal fuel leak.