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FAQ:
Q: What are the different types of ‘Spider’ fuel injectors?
A: 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 you tell them apart?
Q: What are the symptoms of a bad Vortec Spider injectors?
A: 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
Q: What is a spider Vortec engine?
A: 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.
Q: What kind of fuel injection system does GM Vortec use?
A: Jul 1, The system was used on L V6 Vortec engines through , and was redesigned in and renamed “Central Sequential Fuel Injection”.This harness is designed to be a complete wiring system for the central multiport fuel injection system on General Motors Vortec (L) injection engines.