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 MANUALSMITSUBISHI2004ECLIPSE L4-2.4L SOHCREPAIR AND DIAGNOSISBODY AND FRAMESOUND PROOFING / INSULATIONSERVICE AND REPAIR
2004 Mitsubishi Eclipse L4-2.4L SOHC
Sound Proofing / Insulation: Service and Repair
2004 Mitsubishi Eclipse L4-2.4L SOHCSECTION Service and Repair
ATTACHMENT OF SILENCERS

Silencers (petroleum-asphalt sheets) are attached to the upper surface of the floor and at the interior side of the dash panel in order to absorb vibrations and shut out exhaust gas heat. If these silencers are peeled off in the course of replacement or repair of a welded panel, cut and attach replacement material (in the shape shown in the figure). For detailed information concerning the locations where silencers are to be attached for individual models, refer to the manual for that model.

1. Heat the "silencer layer" (petroleum-asphalt sheet) with a blow drier to soften it.

2. Align the silencer layer in the position where it is to be installed, and then press it down with a roller or a block of wood so that it adheres well.
NOTE: An infrared lamp can also be used to heat both the silencer layer and the body panels (be sure to wear gloves).
Silencers (petroleum-asphalt sheets) are attached to the upper surface of the floor and at the interior side of the dash panel in order to absorb vibrations and shut out exhaust gas heat. If these silencers are peeled off in the course of replacement or repair of a welded panel, cut and attach replacement material (in the shape shown in the figure). For detailed information concerning the locations where silencers are to be attached for individual models, refer to the manual for that model.
1. Heat the "silencer layer" (petroleum-asphalt sheet) with a blow drier to soften it.
2. Align the silencer layer in the position where it is to be installed, and then press it down with a roller or a block of wood so that it adheres well.
NOTE: An infrared lamp can also be used to heat both the silencer layer and the body panels (be sure to wear gloves).
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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.