12-03-2014, 02:00 PM
If the compression test result is literally zero then something quite fundemental has let go.
Was it a tapper? Valve head dropping off would be my best guess if so.
If there's zero compression I wouldn't bother running it upto temperature - just pull the head off and you'll see the issue straight away. Can only really be a bent/broken valve, a holed piston, or a catastrophic head gasket failure to give literally nothing (and even the HG would normally show a small amount of compression)
Was it a tapper? Valve head dropping off would be my best guess if so.
If there's zero compression I wouldn't bother running it upto temperature - just pull the head off and you'll see the issue straight away. Can only really be a bent/broken valve, a holed piston, or a catastrophic head gasket failure to give literally nothing (and even the HG would normally show a small amount of compression)
1990 Peugeot 205 GTi 1.9 // 1991 Peugeot 205 GTi 1.9 16v // 1992 Peugeot 205 GTi 1.9 // 1999 Peugeot 306 HDi Estate