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Old 07-07-2013, 07:54 PM   #1
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Did the HEI dizzy upgrade now it smokes

Any reason why my 4.2 smokes now could it be timing or is it most likely the weber being out of adjustment?

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Old 07-07-2013, 08:17 PM   #2
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tell us more, white smoke, blue smoke, black smoke? what did you set the timing at.

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Old 07-08-2013, 02:01 AM   #3
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Black smoke so I turned the dizzy and it turned a little blue and smelted strong.... It ran bad before the upgrade so we messed with the carb to try and compensate for it and I timed it by sound, when it ran smooth I called it good.... Runs great where I set it now just black smoke puffin out and especially when I hit the gas... Never did this before the dizzy upgrade
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Old 07-08-2013, 08:43 AM   #4
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You r running rich. Black smoke is better than white smoke. A lil puff of black smoke won't hurt. But if it's a lot, I would try re set ur carb. If its bad an you leave it, your gas milage will b bad an you will foul plugs.
IMO, I would advance your timing just a lil bit more.
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Old 07-08-2013, 08:51 AM   #5
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It's a constant puff of black... Not to dark but if you hit the gas it does get darker and of course more comes out until it cleans itself back out
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Old 07-08-2013, 10:41 PM   #6
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Yea I would def say running too rich. My opinion, fine tune carb an ck ur timing again. Have you set your vacuum adv on ur dizzy? That will affect your air/fuel mix too.
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Old 07-09-2013, 01:16 AM   #7
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I just dropped it in... Didn't set know it needed to be set
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Old 07-10-2013, 08:44 AM   #8
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Yea. Def have to set the vac adv. no as far as setting it, that takes a lil time. Kinda have to play with it to get it right. Took me a while to set mine.
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Old 07-15-2013, 01:58 AM   #9
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Adjusted the air fuel mixture and it stopped the smoking

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