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.
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HOMESERVICE MANUALSMITSUBISHI2004DIAMANTE V6-3.5L SOHCREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYSYSTEM SPECIFICATIONSON VEHICLE SERVICESERVICE SPECIFICATION
2004 Mitsubishi Diamante V6-3.5L SOHC
Service Specification
2004 Mitsubishi Diamante V6-3.5L SOHCSECTION Service Specification
| Drive belt tension | Generator and A/C compressor V-ribbed type | When checked | Standard value | 490 - 686 N |
| When new belt is installed | Standard value | 784 - 980 N | ||
| When used belt is installed | Standard value | 539 - 637 N | ||
| Power steering pump | When checked | Standard value | 373 - 569 N | |
| When new belt is installed | Standard value | 608 - 804 N | ||
| When used belt is installed | Standard value | 422 - 520 N | ||
| Drive belt deflection <Reference value> | Generator and A/C compressor V-ribbed type | When checked | Standard value | 7.9 - 9.7 mm |
| When new belt is installed | Standard value | 6.0 - 7.2 mm | ||
| When used belt is installed | Standard value | 8.2 - 9.3 mm | ||
| Power steering pump | When checked | Standard value | 11.0 - 14.2 mm | |
| When new belt is installed | Standard value | 8.4 - 9.3 mm | ||
| When used belt is installed | Standard value | 11.7 - 13.4 mm | ||
| Basic ignition timing at idle | 5 deg BTDC +/- 3 deg | |||
| Actual ignition timing at curb idle | Approximately 10 deg BTDC | |||
| CO contents | 0.5 % or less | |||
| HC contents | 100 ppm or less | |||
| Curb idle speed | 700 +/- 100 r/min | |||
| Compression pressure (250 - 400 r/min) | Standard value | 1,200 kPa | ||
| Limit | minimum 890 kPa | |||
| Compression pressure difference of all cylinder | Limit | maximum 100 kPa | ||
| Intake manifold vacuum at curb idle | Limit | minimum 60 kPa | ||
| Timing belt | Amount of projection of auto tensioner rod (Distance between the tensioner arm and auto tensioner body) | Standard value | 4.8 - 6.0 mm |
RENDER: 1.0x
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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.