#1 is very sick, hard fail.
sounds to me, lash wrong, or cam timed wrong. ?
if valves are loose at TDC on each cylinder (firing point), then its not lash but cam timing..
the crank turns 180degrees to fire each cylinder 1,3,4,2, as you walk thru each, wiggle the 2 rockers, they loose , good then 180 more , and check #3 , the 180 CW and 4, and last #2.
the valves are not bent, this engine is free running.
lets fix #1 first. its very bad.
if the lash is good on it,
you could use a leak down gauge if you have shop air, lock crank at #1 firing check leak rate , and lash loose.
if its bad way over 15% (seems it will) just listen to both ports, the one leaking is a bad valve.
and with rubber tube to ear listen at gasket edge, #1 left and right side. hissssss at head gasket? or just intake or exh port.
what is odd, is why 3 cylinders match, how can that be, ? so close too. late cam timing, ? (keys sheared)
is head torque still at spec?
odd yet, if head is tight, why would there be a bad valve on all 4 cylinders.... that is why I pick cam timing, but, who knows?, fate can be cruel.
might just be a warped head.
#4 cam timed.
i can see your cam marks are correct, and the crank marks are perfect. dead on perfect. (post 1 photos , perfect, and spark dont make compression good.so..
there is no error there,
only keys, are in question as those make the marks all fibbers.
recap:
if keys are good.
and lash is good.
head is bad.
are cam bearing ok? (have to be real loose to wreck lash on the fly)
no flat cam lobes (warn down)
sounds to me, lash wrong, or cam timed wrong. ?
if valves are loose at TDC on each cylinder (firing point), then its not lash but cam timing..
the crank turns 180degrees to fire each cylinder 1,3,4,2, as you walk thru each, wiggle the 2 rockers, they loose , good then 180 more , and check #3 , the 180 CW and 4, and last #2.
the valves are not bent, this engine is free running.
lets fix #1 first. its very bad.
if the lash is good on it,
you could use a leak down gauge if you have shop air, lock crank at #1 firing check leak rate , and lash loose.
if its bad way over 15% (seems it will) just listen to both ports, the one leaking is a bad valve.
and with rubber tube to ear listen at gasket edge, #1 left and right side. hissssss at head gasket? or just intake or exh port.
what is odd, is why 3 cylinders match, how can that be, ? so close too. late cam timing, ? (keys sheared)
is head torque still at spec?
odd yet, if head is tight, why would there be a bad valve on all 4 cylinders.... that is why I pick cam timing, but, who knows?, fate can be cruel.
might just be a warped head.
#4 cam timed.
i can see your cam marks are correct, and the crank marks are perfect. dead on perfect. (post 1 photos , perfect, and spark dont make compression good.so..
there is no error there,
only keys, are in question as those make the marks all fibbers.
recap:
if keys are good.
and lash is good.
head is bad.
are cam bearing ok? (have to be real loose to wreck lash on the fly)
no flat cam lobes (warn down)
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