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-   -   Diagnose broken rocker (http://www.clubcobra.com/forums/fe-talk/101574-diagnose-broken-rocker.html)

priobe 12-24-2009 07:29 AM

Eljaro,

Thank you for the response.

So with the gap at the bottom of the sand this is normal. This is what I am noticing.

Driver side

cylinder 6 intake valve pushrod hits the adjustment screw with it backed all the way out.
cylinder 7 exhaust valve pushrod hits the adjustment screw with it backed all the way oout.

Passenger side

cylinder 2 intake valve pushrod hits the adjustment screw with it backed all the way out.

If I remove these pushrods at the cylinders listed above the rocker stands sit flush.

When I removed the assembly after the breakage of the rocker, all the rockers had 2 - 3 turns on the push rods.

Does this sound correct.

Eljaro 12-24-2009 01:18 PM

make sure the pushrods are correctly seated in the lifters.
Do you have hydraulic or solid lifters?.

Gaz64 12-24-2009 01:55 PM

Any multi cylinder engine with one piece shaft mounted rockers will have some valves partly open with the rocker adjustments all backed off.

This is because the cam lift is more than the adjustment range of the adjustment screw.

The valves you have mentioned are in their own part of the four stroke cycle.

If the engine was in a different position, say NO.1 overlap not NO.1 compression,
then you would have a different list of valves partly open.

I would consider it completely normal,
just make sure all the ball ends line up and progressively take the whole assembly down to the head.

It has way more effect if the screws aren't backed off first, for both assembly and disassembly.


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