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By Pops57 - 9 Years Ago
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Hello Y'ers. I have one push rod that fell out. Apparently that one pushrod is bigger than all of the other pushrods. Why would this be? How would this effect the engine?
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By Ted - 9 Years Ago
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The pushrod being larger than the others suggests that it had been replaced in the past. Could be a tubular pushrod while the existing pushrods may be the smaller solid stem style.
There are a variety of reasons for a pushrod getting loose. Some of these include:
Too long a bolt is installed in the end holes in the cylinder head thus hitting the pushrod
Pushrod is contacting the head within the pushrod hole
Rocker adjustment not staying put
Camshaft/tappet wear
Over-reving the engine
Valve springs weak
Worn cup in pushrod
Lack of oil to topend
Worn rocker and/or rocker shaft
Once the reason for the dislodged pushrod is determined, simply correct and replace the pushrod.
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