The engine may develop a misfire due to worn valve seats. This fault will cause the Check Engine Light to illuminate. Our technicians tell us the misfire may or may not be felt while driving. They further recommend that both cylinder heads be removed and thoroughly inspected and repaired as necessary.
Engine Misfire Due to Worn Valve Seat on Chevrolet Tahoe
Average mileage: 233,675 (233,675–233,675)
Engine affected: 5.7L V8
6 people reported this problem
1 person shared problem details
1998 Chevrolet Tahoe- 5.7L V8233,675Visitor
Constant misfire on cyc 6 Done leak down test high leak removed head valve seat curved over edges preventing seating changed heads
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engine misfires in random cylinders between 40mph and 80 mph -- jolts and shudders -- almost li...