Chrysler RAM TRUCK 2500 1994 Service Manual page 892

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EXHAUST SYSTEM AND INTAKE MANIFOLD 11 - 3
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Fig. 2 Exhaust System—Diesel Engines (Typical)
E X H A U S T S Y S T E M DIAGNOSIS
C O N D I T I O N POSSIBLE CAUSE CORRECTION
EXCESSIVE EXHAUST N O I S E 1. Leaks at pipe joints.
2. Burned or blown-out muffler.
3. Burned or rusted-out exhaust pipe.
4. Exhaust pipe leaking at manifold flange.
5. Exhaust manifold cracked or broken.
6. Leak between exhaust manifold and
cylinder head.
7. Restriction in muffler or tail pipe.
1. Tighten clamps at leaking joints.
2. Replace muffler assembly. Check
exhaust system.
3. Replace exhaust pipe.
4. Tighten connection attaching nuts.
5. Replace exhaust manifold.
6. Tighten exhaust manifold to cylinder
head stud nuts or bolts.
7. Remove restriction, if possible. Replace
muffler or tail pipe, as necessary.
LEAKING EXHAUST GASES 1. Leaks at pipe joints.
2. Damaged or improperly installed gaskets.
1. Tighten clamps at leaking joints.
2. Replace gaskets, as necessary.
ENGINE HARD TO WARM UP
OR WILL NOT RETURN TO
NORMAL IDLE
1. Blocked crossover passage in intake
manifold.
2. Thermostat broken.
1. Remove restriction or replace intake
manifold.
2. Replace thermostat.
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