Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Low Pressure Regulator: Installation
2004 Oldsmobile Bravada AWDSECTION Installation
WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Prior to installing the LPL coat the threads of the union with pipe thread sealant containing Teflon. DO NOT use Teflon tape.
- While holding the union with a wrench, rotate the LPL as necessary to attach the components. Tighten the LPL 1-3 turns from hand tight as necessary to properly align and seal the LPL and LPR to the union. See Figure.
- Loosely install the LPR mounting bolts through the mounting bracket and into the LPR.
- Loosely install the LPL mounting bolts through the mounting bracket and into the LPR. Tighten the mounting bolts to specification. See TORQUE SPECIFICATIONS .
- Place the LPR/LPL mounting bracket onto the transmission housing studs. See Figure.
- Install the LPR/LPL mounting nuts (3) onto the mounting studs. Tighten the nuts to specification. See TORQUE SPECIFICATIONS .
- Install the fuel feed hose at the regulator using a NEW "O" ring. Lubricate the "O" ring with petroleum jelly, or equivalent.
- Install the fuel hose retainer and the hold-down nut. Tighten the nut to specification. See TORQUE SPECIFICATIONS .
- Install the fuel line to the LPL fuel inlet elbow using a NEW "O" ring face seal. Lubricate the "O" ring face seal with petroleum jelly, or equivalent. Tighten the fuel line fitting to specification. See TORQUE SPECIFICATIONS .
- Connect the LPL harness connector.
- Install the battery, air cleaner outlet duct and the air cleaner assembly.
- Start the engine. Check for CNG fuel leaks at each serviced fitting using the Combustible Gas Detector (J 45878).
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.