New Pushrod; Now the valve lash can't be set?! - Dodge Cummins Diesel Forum
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Old 09-20-2010, 08:47 AM   #1 (permalink)
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New Pushrod; Now the valve lash can't be set?!

Just ran my valves. Found #6 exhaust was way out of whack (too much gap). Pulled the pushrod and found the ball end was gone. Not sure how it happened; But either way I replaced the pushrod and now I cannot adjust the valve lash. The adjustment screw is turned all the way out and its still too tight. Adjusted and re-adjusted to make certain the bottom of the pushrod was in the tappet.

What gives? What next?

I had adjusted the valves using the old push rod with the missing end and it ran well. But the adjustment screw was turned in further than the rest by 4/5 turns which is why I pulled the pushrod in the first place.

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Old 09-20-2010, 11:05 AM   #2 (permalink)
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Did you get the new pushrod all the way down? Sure it's not sitting on something else?
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Old 09-20-2010, 02:08 PM   #3 (permalink)
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ball end sitting in the lifter top ?

if it is seated in the lifter properly, you should feel it "stick" to the end of the pushrod and be able to lift it up slightly before feeling it pop off.... i'd say get a pen magnet and fish around down there and see if you can hook anything.... i'd be poping that oil pan off and lookin for metal fragments as well...
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Old 09-20-2010, 02:19 PM   #4 (permalink)
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yep i would bet ur pushrod end is in there!!!
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