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Troubleshooting the Replacement Engine's Valvetrain

15:40
31:06
109K views

At 15:40 in

Richard Petty '72 Tribute Car: Final Thrash Before Track Day..Will We Make It? (Bonus DW Story Time)

What happens here

After initial reassembly, the engine is cranked to check the valvetrain's operation. A new issue is identified: a sticky valve, despite this being a replacement engine. The team attempts to free the sticky valve using a hammer and pry bar to gently tap the rocker arm, encouraging the valve to move freely. This process requires patience and careful manipulation to avoid further damage.

Goal: Resolve the issue of a sticky valve in the newly installed engine.

Tools and materials

  • Hammer — Gently tapping the rocker arm to free the sticky valve
  • Pry Bar — Applying leverage to the rocker arm

What they say

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distributor installer so we don't make this thing fire itself backwards disconnected or didn't connect to the distributor we're gonna crank it over make sure all the valves are good to go before we try to fire this thing yeah um yeah that's why we never just on this side same thing no i just came loose look yeah i know but i was watching it as the rocker arm was coming up but the valve wasn't yeah on that last one it started walking its way up right oh i think the valve was sticking the valve was like the valve pull valve yeah the valve was hanging down the valve was hanging valve was hanging down in the rocker arm he was pushing on the rocker arm back down and then and then the valve started going up yeah it was definitely hanging that's weird i know it's weird that one's stuck now that one wasn't stuck before was i no not that we knew no yeah because i was looking at that one like oh live what is this thing doing smack the top of that rock arm and see if we can pop it and make it pop black up he should have it when in doubt bang it you don't have a pry bar out here dude see if we could go we'll see if i could go in this way and pry down on yes sir yeah perfect yeah i'll see it's coming back up sort of all right he's trying to what would cause that well i don't know i don't know if it's lack of oil or or what but it wasn't sticking before and then all of a sudden it started yes maybe but not typically i mean there we go that sounded good

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