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Diagnosing and Addressing Car Issues

1:20
49:22
119.3K views

At 1:20 in

Lake Speed's Final Ride: Running His 1993 NASCAR Ford Thunderbird Wide Open (In Car Cameras)

What happens here

From inside the trailer, Lake Speed Sr. discusses his goals for the day: to get settled, achieve consistent driving, and switch out the carburetor. He explains that the current twin-blade carburetor causes the engine to stumble at part throttle due to insufficient air speed/volume. He hopes a different carburetor will resolve this issue. Meanwhile, Lake Speed Jr. is seen working on the car, checking for an oil leak that causes low oil pressure during idle and low-speed cornering. They determine the low oil pressure isn't a bearing problem and decide to install a check valve in the oil feed system.

Goal: Identify and begin troubleshooting mechanical issues with the race car

Tools and materials

  • Twin-blade Carburetor Holley — Original carburetor causing engine stumbling at part throttle
  • Wrenches — Adjusting fittings and working on engine components
  • Check Valve — Installed in the oil feed system to regulate pressure
  • Oil — Engine lubrication, checked for leaks

What they say

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reality my age and uh the amount of people it takes to take this thing to the racetrack whatever I just I think I need to let somebody else have it to have fun with with they'll have a blast with the memories most of them great what are you hoping to accomplish today what's different than the last time really just get settled down get you get KN settled down and get the car where it's driving consistent and then did his carburetor switch I'm really curious about that I think there's something there and this is the carburetor you raced with before yeah it's got a real Progressive linkage on it so you can you can ease down on the throttle and slowly it's not on you know so quickly on and off and not only that your butterflies on this one are so much bigger that when they do open the same amount I open it on them on this carburetor is considerably more than what the other one would be this carburetor only got two big blades instead of four like a normal one even if you had to S the same mechanical linkage it's going to be quicker because of the like you saying the air speed yeah the air speed going through there volume of air looks like we've already suffered some casualties oh yeah got to bleed for it right right yeah you care about it you got to bleed for it let me know if you got War pressure got War pressure morning I was say I have listened to a lot of vintage stock cars in the time since I've last heard that one and there was only a very small percentile that sound like that when you turn them on mine doesn't sound like that when I turn it on that one does sound really good it's yeah the compression on that it's like 13 13 to1 yeah that's got to be why it's 13 to one yeah having all the ta2 guys here kind of makes it feel like less of a minority yeah and there's a couple of V stock cars here too there's an old Jimmy Johnson car up there too oh there is yeah everything okay pull the hood up I smelled a bunch of oil all of a sudden on that last lap H you know me I'm like Pig pin when it comes to oil everywhere I go there's a b of oil so yeah you went out the first time and smell the oil and came back in yeah fixed some little fitting that may have been a little bit loose and all that one that's happens first one's always shed down run so that's okay so then you're going to go back out again and then after that run put the other carburetor on probably that I'm excited to see how that goes cuz I really want to see the inar footage when you can really get…

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