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loose .................. A ... Require repair or replacement of injection tube or replacement of catalytic converter. Air injection tube restricted ............. A ... Require repair or replacement of injection tube or replacement of catalytic converter. Air injection tube threads damaged ........ A ... Require repair or replacement of injection tube or replacement of catalytic converter. Air injection tube threads stripped (threads missing) ...... A ... Require repair or replacement of injection tube or replacement of catalytic converter. Body cracked ............ B .. Require repair or replacement. Converter empty ......... A .. Require repair or replacement. Converter fill plug missing ................ C .. Require repair or replacement. Converter missing ....... C ............ Require replacement. Exhaust gases leaking ... A .. Require repair or replacement. Flanges leaking ......... A ... Require repair or replacement of flanges. Inlet pipes cracked ..... B .. Require repair or replacement. Internal rattle (except pellet-type) ........... 2 .......... ( 1) Further inspection required. Mounting brackets that are part of converter broken ................. A .. Require repair or replacement. Obvious overheating ..... .. ......... ( 2) Require testing of converter. Outlet pipes cracked .... B .. Require repair or replacement. Pieces of catalyst material found downstream ............. 1 ............ Suggest replacement. Plugged ................. A ........ (3) Require replacement. Testing has determined that existing converter has been lead-poisoned, contaminated, or failed testing ................ A .. Require repair or replacement. (1) - If the converter is breaking up, suggest converter replacement. If an object has fallen into the converter, remove the object. (2) - Overheating is caused by something other than the converter. Further diagnosis is required to determine the cause of the overheating. (3) - Determine cause and correct to ensure that new converter will not become plugged. EXHAUST AND TAIL PIPES NOTE: For pipes with resonators, also see MUFFLERS AND RESONATORS. EXHAUST AND TAIL PIPE INSPECTION |