2000 Chevrolet Suburban Repair Question
Asked on November 22, 2012
Chevrolet Suburban Engine Problem
5.3 engine starts in the morning and is quiet at idle for 20 seconds then it ticks like a collapsed lifter for twenty seconds then it quiets and never makes any noise until the next morning no matter how many times i start after that. The oil pressure seems like it is lower than it was i think it reads 38 with the engine warmed up at 60 mph and 30 at idle warm. I just had a new head gasket put on at the dealer and i had them put new lifters in at that time, the problem is still there, so i ruled out the lifters. I thought maybe the oil pump was losing its prime, but the noise does not start until it has run for 20 second, so i am stumped any ideas would be appreciated.