In this video we go over how to rebuild the spider fuel meter body assembly for the GM Central Sequential Fuel Injection (CSFI), also referred to by GM as the Sequential Central Port Injection (SCPI), fuel injection design. This 1990s fuel delivery spider design was used in the 4.3L Vortec V6 (4300 RPO L35 and LF6), the 5.0L Vortec V8 (5000 RPO L30), and the 5.7L Vortec V8 (5700 RPO L31) only. While this fuel injection spider design was later replaced with the GM MFI spider fuel injection system, CSFI / SCPI can still be quite reliable and dependable today, when fed with the appropriate quality fuels to prevent the buildup of carbon deposits. It is carbon buildup which causes all of the known problems with CSFI / SCPI systems.
The vehicle illustrated is a 1998 Chevrolet Cheyenne K2500 standard cab pickup truck with the 5.7L vortec V8 engine; but the procedure, parts, and techniques shown are applicable to any 1996 thru 2002 old body style (OBS) GM C/K truck GMT400 type such as the Chevrolet Silverado, GMC Sierra, Chevrolet Suburban, Chevrolet Cheyenne, Chevrolet Tahoe, GMC Suburban, Cadillac Escalade, or GMC Yukon. This procedure is also applicable to many G and P vans of the same year range like the Chevrolet Express and GMC Savana, as well as S/T trucks like the Chevrolet S10 Blazer, GMC Jimmy, and Oldsmobile Bravada.
Also applicable to some Holden branded GM trucks in Australia of this same time period with the same engines.
The eBay and Amazon search links below are paid links, for which I may be compensated and earn a commission, if you choose to buy the parts and tools shown in this video thru them:
GM factory service manual for this engine: https://ebay.us/AqyfkG
The aftermarket spider poppet valve retaining clips for CSFI injectors can be found at: https://ebay.us/cbd2qd
If you are not using TOP TIER gasoline, then you have to use Techron in the fuel tank with an CFSI / SCPI fuel injection system to control carbon deposits. You can find Techron at: https://ebay.us/6yxIyu and on https://amzn.to/3uVi02W
Replacement fuel meter bodies for the V6 (GM 17113273) and V8 (GM 17113274) can be found at: https://ebay.us/31bh0P and on https://amzn.to/3iZfWBE
The fuel pressure regulator assembly GM 19210686 I showed can be found at: https://ebay.us/g0ow7Q and on https://amzn.to/3x2kbVb
The fuel meter body rebuild kit GM 17113205 (ACDelco 217-451) I showed can be found at: https://ebay.us/E8F2JP
The replacement injector assemblies genuine GM 17091432 (ACDelco 217-265) that I showed can be found at: https://ebay.us/ep7nXE
Later generation gasoline GM fuel system treatment plus GM 88865595 (ACDelco 10-3012) can be found at: https://ebay.us/yaDAmT and on https://amzn.to/3K7HS2f if you prefer to use this instead of Techron.
And if I've saved you some $$ here, consider some coins for the coffee tip-jar! https://ko-fi.com/drshock
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Chapters:
0:00 - System overview
0:30 - Reasons and remedies for reliability problems
6:59 - Fuel meter assembly inspection
8:49 - Disassembling the fuel meter assembly
15:56 - Replacement parts overview
18:38 - Reassembling the fuel meter assembly
21:03 - Advice on reusing old fuel injectors
25:18 - Reassembling the fuel meter continues
#drshock #obstruck #obstrucks
Disclaimer: DrShock, the alias for the human content creator for this YouTube channel, is not responsible for any damages, injuries, losses, or liabilities associated with any repairs, upgrades, or maintenance performed on yours, or any other, vehicle whatsoever. No warranty, express or implied, is made as to the accuracy or completeness of any information provided within this channel. Viewing and using the “as-is" information of this channel is totally at your own risk. Always wear personal protection equipment and follow appropriate vehicle manufacturer service manual guidelines with original manufacturer parts only when performing any repairs, upgrades, or maintenance upon any vehicle.
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