Upgrade your Jeep Wrangler 4.0L with 4-hole fuel injectors for improved performance! Learn how to make your Jeep run smoother and more efficiently in this easy tutorial.
The fuel injectors that your Jeep came with were likely single-hole injectors, mine have been in there since the jeep was new, and in my everlasting search to solve my P0171 and P0174 codes, I've decided to replace my injectors next. These should also improve performance, and fuel economy.
I bought re-manufactured injectors from K-Suspension (link below). The set cost me about $120. These injectors are a direct replacement for the single-hole injectors that came with the Jeep.
K-Suspension injectors:
www.ksuspensionfab.com/store/...
Cowl Air intake video:
• How to Build Your Own ...
Jeep 4.0l heat soak heat shield kit:
amzn.to/3NhWjEB
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0:00 - intro
0:25 - K-Suspension product, and description
1:55 - De-pressurize the fuel system
2:58 - Disassembly of the air intake, and throttle cable bracket
5:37 - Label and Remove fuel injector electrical connectors
6:34 - Fuel line, and fuel rail removal
12:10 - Unseating the factory injectors and fuel rail
13:24 - Old injector removal from the fuel rail
14:30 - New injector installation
16:44 - Fuel Rail Re-installation
19:09 - Re-connecting the Injector electrical connectors
20:57 - General re-assembly
21:22 - Priming the fuel system
22:42 - First start-up
23:16 - Final thoughts, and closing