High Pressure Fuel Pump - Chevy Silverado and GMC Sierra Forum
Aug 3, 2023 · Does the 2013 5.3 engine have a high pressure fuel pump under the intake manifold like a 2014 and up? I'd hate to buy the parts and pull the intake only to find it was a waste of time.
GM 5.3L EcoTec3 L83 Engine Specs, Problems, Reliability, Info
Direct injectors precisely shoot fuel directly into the combustion chambers at very high pressure, up to 15 MPa (150 bar). Besides a high-pressure pump, the engine also has a conventional tank-located …
PURPOSE s, equipped with 5.3L V8 engine (L83). The SIDI high pressure fuel pump i these vehicles may have been misbuilt. This could result in extended crank, rough idle, DTCs, MIL for low fuel …
How to Replace 5.3L Silverado High Pressure Fuel Pump ...
In this video we show the step by step process for changing the high pressure fuel pump on Cliff's 2014 Silverado with the 5.3L EcoTec V8.
Everything You Need To Know About GM's 5.3L V8 Ecotec3 Engine
Aug 2, 2025 · The cylinder banks are placed at a 90-degree angle, and a high-pressure crankshaft-driven fuel pump sits between the banks.
The 5 Most Common Chevy EcoTec3 5.3L Engine Problems
Jul 27, 2020 · The 5.3 EcoTec3 has both a low-pressure fuel pump and a high-pressure fuel pump, or LPFP and HPFP. High-pressure fuel pumps are common failure points on virtually all direct injection …
Common Problems With GM's Ecotec3 L83 Engine (According To ...
Dec 8, 2024 · Since this is how the engine is designed, owners should be prepared to maintain the intake ports and replace the high-pressure fuel pump and injectors as soon as they fail.