Could be. If I was barring over an engine I was unfamiliar with, I would
definitely have all of the covers off to expose the moving parts so I could
watch them while I was turning it over (slowly.)
> On Feb 2, 2018, at 7:03 PM, M. Mitchell Marmel via Mercedes
> <firstname.lastname@example.org> wrote:
> Dropped valve, mebbe?
> On Fri, Feb 2, 2018 at 5:46 PM, Curley McLain via Mercedes <
> email@example.com> wrote:
>> It has been out of the car, sitting on a shelf. Plugs in. I just pulled
>> the plugs and all look OK. The pistons near TDC are 4 and 7 (Rt bank back
>> is 4) Left bank next to back is 7) when the engine stops turning. From
>> what I can see shining a light in the holes, all are dry with normal
>> combustion residue.
>> I think the cylinders are ok.
>> Probably next is to pull the valve covers and start checking timing chain
>> and its guides.
>> Randy Bennell via Mercedes <mailto:firstname.lastname@example.org>
>>> February 2, 2018 at 4:45 PM
>>> Have you heard it run or is this an engine in a derelict car that has not
>>> run in a long while?
>>> Are the spark plugs in it? Could a cylinder be full of coolant and
>>> causing a hydraulic lock?
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