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Initial Engine Diagnosis & Old Engine Troubleshooting

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

What happens here

The video begins with an overview of the race car and its current engine issues, including problems with the filler neck hitting the motor and planning for alternator wiring. Initial attempts to crank the engine produce a 'cracking noise', leading to a discussion about engine health. Jeff, a long-time NASCAR engine builder, inspects the valvetrain and diagnoses a bent valve or stuck lifter as the cause of the noise and performance issues.

Goal: Identify and diagnose the root cause of the race car's engine problems.

Tools and materials

  • Race Car Richard Petty Tribute Car — The vehicle undergoing engine diagnosis and repair

What they say

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this is about the condition you're usually in about this time of the day and you got to leave on thursday something bent the valve i've started motors for 20 years this one is the first one that scared me y'all got a lot of work to do petty tribute car build part three we had some hang-ups with the clutch and the flywheel and parts and stuff we had to wait for that to come in but it did this issue with the filler neck so it was it was hitting on the motor somewhere and we got to make a alternator wire do you take the alternator wire to the battery or to the switch inside the car electrically it's going to be to the battery but we're going to put it on the starter solenoid so you can actually do that yeah okay yeah somebody if this was a normal starter on here could you run that to the starter and have that achieve the same thing yes wow well that's cool i didn't know that i just learned something new every day but this car has a starter solenoid inside the car so we've got to go in there why is this inside why is it inside the car ah oh my god i'm good good now you help me why is it inside the car they started putting it inside the car because the g-forces of the car were causing these causing the contacts to close and actually trying to the starter engage when the car was running oh wow way back in the 80s so now we're about to set up spacing up the motor mounts to do the driveline angle and we're trying to find somewhere to get a baseline angle reading of the frame there's a frame rail down here yeah so the last time i saw it one of the last times i saw a car like this it had a 383 and it's supposed to have a 360 in it you're going to learn a lot about what not to do that's right in case you do but what not to do and what do you got to do with a young lady are you a crew member yes uh-huh yeah she's a crew chief yeah my manager yep everything i always remind me of david yeah i don't remember david david you're my crew chief had his wife's name was gretchen and uh so gretchen was that on david but all about about what do y'all do all night anyway you go out and don't ever call home blah blah blah blah he said we just go in a bar and drink beer he said there's no way you can just go sit in a bar all night long and drink beer he said yeah so he took her with him on a trip and they as soon as practices over with they got to the hotel they went to the bar and they sat in a bar to about two in the morning and on a bar stool and drank beer she said and he said…

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