What causes carbon in intake runners and carb?

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Re: What causes carbon in intake runners and carb? [Re: markz528] #1263239 07/08/12 12:11 AM 07/08/12 12:11 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: I'm assuming it is carbon, but it might not be. What causes the black (carbon?) in intake runners and in a carb? Ran a 750 Holley vacuum secondary carb maybe 10 to 20 hours last year on my daughter's 67 coronet with a 383. Was freshly rebuilt when I installed it. The carb is now heavy black. My cousin's 400 cid 67 Firebird with a Paxton supercharger has half the runners black and half clean. Its a dual plane that we now know is a mistake. The cylinders that are rich have the black runners. What is causing this? The Pontiac just has the wrong cam in it... any pressurized engine doesnt like over lap on the cam... as to your other car what did you put in for a cam and did you degree it... did you do a valve job on it

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Subject	Posted By	Posted
What causes carbon in intake runners and carb?	markz528	07/07/12 01:26 AM
Re: What causes carbon in intake runners and carb?	stevet340	07/07/12 02:08 AM
Re: What causes carbon in intake runners and carb?	dmking	07/07/12 03:16 AM
Re: What causes carbon in intake runners and carb?	OUTLAWD	07/07/12 03:50 AM
Re: What causes carbon in intake runners and carb?	mopartoby	07/07/12 04:22 AM
Re: What causes carbon in intake runners and carb?	a493demon	07/07/12 04:25 AM
Re: What causes carbon in intake runners and carb?	RobX4406	07/07/12 04:51 AM
Re: What causes carbon in intake runners and carb?	8urvette	07/07/12 07:41 AM
Re: What causes carbon in intake runners and carb?	8urvette	07/07/12 07:43 AM
Re: What causes carbon in intake runners and carb?	markz528	07/08/12 03:22 AM
Re: What causes carbon in intake runners and carb?	RemCharger	07/08/12 11:16 AM
Re: What causes carbon in intake runners and carb?	10.90 Racer	07/08/12 03:07 PM
Re: What causes carbon in intake runners and carb?	Dunnuck Racing	07/08/12 03:24 PM
Re: What causes carbon in intake runners and carb?	S/ST 3040	07/08/12 03:35 PM
Re: What causes carbon in intake runners and carb?	Dunnuck Racing	07/08/12 03:54 PM
Re: What causes carbon in intake runners and carb?	Thumperdart	07/08/12 07:23 PM
Re: What causes carbon in intake runners and carb?	MR_P_BODY	07/08/12 04:11 AM

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