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Classic/Antique Car Repair/4bbl on Caddy (500 8.2 L)

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Expert: - 5/27/2008


Question
Is there a diagram or step by step to adjust a Carter 4 bbl carb on a Caddy 8.2L?  The longer it sits, the longer it cranks before starting. When runing 30 mph, after a few miles it stumbles and quits but pumping the gas gets it going. At interstate speeds, it has lots of go, but then begins to stumble and runs rough. It has new electronic ignition, vacuum checks, new gas pump, Edlebrock high rise intake manifold and custom exhaust. Local shop tried different length rods on carb, idle adjust, even messed with the timing but not luck. When first put on would pull 550+ HP. Starts fast after being run a few minutes. Any ideas? Engine was rebuilt to original spec.

Answer
HI Henry:
This one is a tough one. It you are sure your timing is correct. Check the fuel filter or fuel tank. You may have garbage in the tank or filter causing the problem. Also, be sure it is not foul plugs when you gun or a partically stuck automatic choke.

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Vern Bullock

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Visit my website at: http://www.classytransportation.com/ I can answer most questions about autos built in the 60's 70's and 80's. Specifically, Lincolns, Rolls Royces and the Excaliburs. Mechanical issues and technical questions are my expertise. I also have a general knowledge of most older automobiles. Keep in mind, I can only provide answers if the questions are very specific and complete. Without details, I can only speculate and that's not good for solving your problem.

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I have owned and maintained Silver Shadows for over 10 years now. I find most mechanics and even Rolls Royce mechanics have very little knowledge about these automobiles. I have researched these cars in quite a bit of detail and can pretty much tell you what is wrong, if you can describe the behavior in detail. I have saved quite a few RR owners a lot of money and aggravation due to improper diagnosis. I am the owner of Classy Transportation, LLC a luxury limousine service specializing in antique cars, classic cars, vintage cars and exotic cars.

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Classy Transportation, LLC Limousine Service.

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All around the Internet

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I hold a BS degree in computer science and a MS degree in mechanical engineering.

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I regularly compete at car shows and average around a dozen awards annually.

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See Web site at: http://www.classytransportation.com/

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