Getting gray smoke from tail pipes - Ford Mustang Forum
 
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post #1 of 7 (permalink) Old 04-20-2011 Thread Starter
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Getting gray smoke from tail pipes

Got 2 new front struts today, 2 new tires. Went down a couple of sizes to 205/55/16's from a 225/60/16's. Big difference. Anyway...anyway,,,bla bla, but the guys at the shop seem to think my grey smoke, coming a fairly new engine I might add, less than 10,000 miles, is a carb adjustment problem. What do you think? Am I burning oil?


86 LX, '93 front bumper, 355 Chevy, Lincoln MK7 differential, 4 wheel disc.
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post #2 of 7 (permalink) Old 04-20-2011
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if your were burning oil it would be more of a blueish to black smoke...what kind of mileage are you getting with it?


Im only going to say this once, keep your arms and legs in the vehicle at all times
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post #3 of 7 (permalink) Old 04-20-2011 Thread Starter
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I'm getting MAYBE 5 to a gallon. I just put $20 in his afternoon, which registered 1/2 tank, went about another 5-7 miles and the needle moved 1/8th. After I take the boy to school 2moro, then pick him up, I'll be back at damn near empty. I have a Holley, but not sure which one. A freind told me yesterday it was not a double pumper. But he said, and also the Firestone guys, (mustang lovers) said Holley were a pain in the crotch.

86 LX, '93 front bumper, 355 Chevy, Lincoln MK7 differential, 4 wheel disc.
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post #4 of 7 (permalink) Old 04-21-2011
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You need to get the numbers off the carb and find out exactly what size it is because it sounds like it's too big for the engine. Too many people oversize carbs, thinking they need a large one when in reality they don't.

Holley carbs are a pain, when you don't know what you're doing. Get them right, you won't have any problems with it. You have to find out what you have first.

Oil burning is a light blue color, not almost black. Not black at all.







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post #5 of 7 (permalink) Old 04-21-2011 Thread Starter
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Just found out...its a spread bore.What CFM is this?

86 LX, '93 front bumper, 355 Chevy, Lincoln MK7 differential, 4 wheel disc.
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post #6 of 7 (permalink) Old 04-22-2011
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That's a quadrajet, they're usually 750 cfm. Chances are it's too big and is overkill at this point.







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post #7 of 7 (permalink) Old 04-22-2011 Thread Starter
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Thanks for everything you told, temps/oil/carb....I'm analyzing the evidence.

86 LX, '93 front bumper, 355 Chevy, Lincoln MK7 differential, 4 wheel disc.
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