Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Fuel Pressure: Service Precautions


1. Handle all fuel injection related parts with care, as they may easily be damaged.

2. Use new gaskets or O-rings when installing fuel lines or injectors.

3. Lightly lubricate O-rings and flare connections with clean 30 weight engine oil.

4. Check for leaks after servicing fuel system, and correct as needed.

5. Do not operate the fuel pump without fuel. The pump is lubricated by the fuel flowing through it.

6. Do not depress the accelerator pedal on fuel injected models while trying to start the car.

7. Do not use gear lubricant or brake fluid to lubricate fuel system connections and O-rings.