GM 4.3L V6 / 5.7L V8 - Fuel Spider Swap, SCPI to MPFI
Video of me swapping the fuel spider out of my 1999 vortec 4.3l after it failed. All the tools and tricks needed for the job are outlined in the video. 5/8'' Crows foot will be your best friend. here were the symptoms: Truck would start rough and require throttle to even out when warm. Would usually cold start fine. This lasted for about 6 months, then it got to where it would be so flooded it would run like shit and not even out. fuel pressure regulator was dumping fuel out of itself and into the upper intake; whenever the fuel pump turned off. I demonstrated this in the video with the plenum off and the injectors plugged in. please subscribe to help keep my channel growing If your have a pre-2003 4.3L I highly recommend you replace your poppets with the new multi port spider. Just about the best upgrade you could do. Changed the plugs and wires as well and now get 19mpg (up from 16 with the poppets). this video was a nightmare to edit (filmed back in august) and the audio from the camera doesn't sound right royalty free music tecknoaxe i think is how you spell his name......
How replace a chevy fuel spider
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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 fuel. 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 post-repair performance. 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 safe! 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. Please click "like" on this video, as it encourages us to make more! If you find this video helpful, we'd also appreciate it if you "favorite" it as well. And, as always, subscribe to our channel for the latest news and information on upcoming videos. Find us on Facebook: http://www.facebook.com/pages/One-Source-Automotive/384367448256 Our Twitter Feed: https://twitter.com/#!/OneSourceAuto
Chevy GMC 4.3 L V6 Spider Injector Assembly Replacement Part 4
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