Mitsubishi Lancer Evolution X. Manual - part 86
INTAKE AND EXHAUST DIAGNOSIS
TSB Revision
INTAKE AND EXHAUST
15-3
SYMPTOM PROCEDURES
Inspection Procedure 1: Exhaust Leakage
DIAGNOSIS
STEP 1. Start the engine. Have an assistant stay
in the driver’s seat. Raise the vehicle on a hoist.
Have the assistant rev the engine while
searching for exhaust leaks.
Q: Is the exhaust leaking?
YES :
Go to Step 2.
NO :
The procedure is complete.
STEP 2. Check the gasket for cracks, damage.
Q: Is the gasket damaged?
YES :
Replace the gasket, then go to Step 1.
NO :
Go to Step 3.
STEP 3. Check for loosening in each coupling
section.
Q: Is there any loosening in any section?
YES :
Tighten, then go to Step 1.
NO :
There is no action to be taken.
Inspection Procedure 2: Abnormal Noise
DIAGNOSIS
STEP 1. Start the engine. Have an assistant stay
in the drivers seat. Raise the vehicle on a hoist.
Have the assistant rev the engine while
searching for exhaust leaks.
Q: Is any abnormal noise generated?
YES :
Go to Step 2.
NO :
The procedure is complete.
STEP 2. Check for missing parts in the muffler.
Tap the muffler lightly to check for loose baffles,
etc.
Q: Are there any missing parts in the muffler?
YES :
Replace, then go to Step 1.
NO :
Go to Step 3.
STEP 3. Check the hanger for cracks.
Q: Is the hanger cracked?
YES :
Replace, then go to Step 1.
NO :
Go to Step 4.
STEP 4. Check for interference of the pipes and
muffler with the body.
Q: Are the pipes and muffler interfering with the
body?
YES :
Repair, then go to Step 1.
NO :
Go to Step 5.
STEP 5. Check the heat protectors.
Q: Are any heat protectors loose or damaged?
YES :
Tighten or replace, then go to Step 1.
NO :
Go to Step 6.
STEP 6. Check the pipes and muffler for damage.
Q: Are the pipes and muffler damaged?
YES :
Replace, then go to Step 1.
NO :
There is no action to be taken.