Originally Posted by Patriot Services
Personal theory on testing at past TDC. If there is any ridge at the cylinder top it can interfere with the ring to cylinder contact. I have an OTC model that's probably 20 years old. This is important info. Guys throw tons of parts at a problem when only to find out its lacking enough compression to even start.
But that's what Motor Honey is made for. Right?
Posted via Mobile Device
If there is a ridge at the top of the bore...there is probably another just like it at the bottom of the bore..The ridge is a result of worn rings and/or a "Piston Slappin' "
..As the purpose of the leakdown test is to best figure the internal condition of the valves and rings without taking it apart..The more info you can get...The better...