Having problems with your 1987 GMC Suburban ?

87 gmc suburban wont pass idle test

\015 Passes all other aspects of emissions test but will not pass co test @ idle speed 350 tbi\015 Posted / edited by AnonymousUser on : 16-04-2018

Answers :

Check vacume pressure at carb. diaphram had sim. prob. with 78 caprice
Repair Help & Product Troubleshooting for 1987 GMC Suburban

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