excessive cranking in the morning, surging and missfires on Chevrolet S10

Average mileage: (–)
1 model year affected: 1996
1 person reported this problem
1 person shared problem details
hard starting after several hours and upon start up, engines missfires and runs rich Possible fuel pump regulator failure under the upper intake leaking fuel directly into the intake system. You must replace the regulator assembly and possibly the spider( injector cluster) to resolve the problem. Allowing the engine to run like this for an extended period could result in cylinder wall wash down resulting in internal engine damage.
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