Honda Civic/CRX/del Sol 1984-1995 Repair Guide

EXHAUST SYSTEM

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See Figures 1 through 16

Inspect inlet pipes, outlet pipes and mufflers for cracked joints, broken welds and corrosion damage that would result in a leaking exhaust system. It is normal for a certain amount of moisture and staining to be present around the muffler seams. The presence of soot, light surface rust or moisture does not indicate a faulty muffler. Inspect the clamps, brackets and insulators for cracks and stripped or badly corroded bolt threads. When flat joints are loosened and/or disconnected to replace a shield pipe or muffler, replace the bolts and flange nuts if there is reasonable doubt that its service life is limited.

The exhaust system, including brush shields, must be free of leaks, binding, grounding and excessive vibrations. These conditions are usually caused by loose or broken flange bolts, shields, brackets or pipes. If any of these conditions exist, check the exhaust system components and alignment. Align or replace as necessary. Brush shields are positioned on the underside of the catalytic converter and should be free from bends which would bring any part of the shield in contact with the catalytic converter or muffler. The shield should also be clear of any combustible material such as dried grass or leaves.



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Fig. Fig. 1: Undercar view of the front-half of the exhaust system with splash shields in place-1987 CRX Si shown



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Fig. Fig. 2: The engine splash shield prior to removal. If yours is bent or missing bolts, now is a good time to repair or replace it



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Fig. Fig. 3: After unbolting the shield, remove it for access to the header pipe (Exhaust Pipe A) flange



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Fig. Fig. 4: The exhaust header pipe flange. Note the exhaust gas sensor screwed in to the lower portion of the exhaust manifold



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Fig. Fig. 5: Back up the nut and bolt with the right size wrench (now is not the time to try to substitute SAE for metric tools!)



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Fig. Fig. 6: Removing the spring-loaded flange bolt and nut from the rear portion of the header (pipe A)



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Fig. Fig. 7: Undercar view of the exhaust pipe, catalytic converter and muffler. Inspect especially for severity of rust or holes



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Fig. Fig. 8: Exhaust system components-1984-87 models except Si and 4WD Wagon



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Fig. Fig. 9: Exhaust system components-1984-87 Si models



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Fig. Fig. 10: Exhaust system components-1984-87 4WD Wagon



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Fig. Fig. 11: Exhaust system components-1988-91 Canadian Models



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Fig. Fig. 12: Exhaust system components-1988-91 models except Si and EX



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Fig. Fig. 13: Exhaust system components-1984-87 Si and EX



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Fig. Fig. 14: Exhaust system components-1992-95 Civic Si and EX, del Sol Si



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Fig. Fig. 15: Exhaust system components-1992-95 Civic DX, LX and del Sol S



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Fig. Fig. 16: Exhaust system components-1992-95 Civic VX and CX

 
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