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Group: Forum Members
Last Active: 7 Years Ago
Posts: 17,
Visits: 67
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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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Group: Administrators
Last Active: 10 hours ago
Posts: 7.2K,
Visits: 203.0K
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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.
  Lorena, Texas (South of Waco)
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