2006 Pontiac GTO Repair Question
Topics covered: Piston, Camshaft, Timing chain.
Mileage: 76,000 miles.
Mileage: 76,000 miles.
Asked on December 21, 2011
Replaced head gasket, do pistons have to be at tdc for car to start?
Some of the pistons are halfway down and some are all the way up
Asked by 06ls2gtoAnswer
Replied on December 21, 2011
How do you want them to be, all up at the same time? Only the number one piston must be at top dead center, and the camshaft(s) sprockets must be lined up with the timing marks when the timing chain is installed.