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.

1989 Mercedes Benz 300CEFACTORY OEM SERVICE PROCEDURE

Fuel Pump Specs: Notes

6-CYLINDER FUEL PUMP PERFORMANCE

Application	Pressure: psi (kg/cm² )	Volume in 40 Sec.: Pts. (L)
All Models	77-80 (5.3-5.5)	2.1 (1)

V8 FUEL PUMP PERFORMANCE

Application	Pressure: psi (kg/cm² )	Volume in 40 Sec.: Pts. (L)
All Models	88-91 (6.2-6.4)	2.1 (1)

Factory Service Tools

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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.