carbon buildup removal

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Nov 19, 2005 | 11:45 PM

pageparsley

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Joined: Sep 2003

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From: panama city

carbon buildup removal

i have installed a new 302 crate engine and have been playing a game of hit and miss with setting my timing and air fuel mixture. in the process of this is is possible to buildup carbon on the heads as a result of running the engine way to to rich. i have really blackened up a couple sets of new plugs in this process. this is the first time i have ever tried doing all this so i am usually always doing the old live and learn thing. i had it running pretty good a couple of times but when i do a little tweaking here and there it just throws things out of whack again. do i set the timing by taking plug out of number one cylinder and hold finger over it. then turn engine over a few times till air blows out number 1. then line up number 1 on cap with where rotor points at. i bought my distributor with a timing advance already set they said so i dont have to do anything else as far as that goes right. thanks for any help!

Nov 20, 2005 | 12:00 AM

baddad457

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Joined: May 2003

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From: south louisiana

With a new engine, it'll take a LONG time running rich to build up enough carbon to affect anything. Run a few bottles of Chevron's Techron additive to remove what's there and periodically run their gas to maintain it.

Nov 20, 2005 | 05:04 PM

Franklin2

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From: Virginia

Quote:

do i set the timing by taking plug out of number one cylinder and hold finger over it. then turn engine over a few times till air blows out number 1. then line up number 1 on cap with where rotor points at.

That will get the dist in the ballpark if you took it out. If it will start, then set the timing with a timing light. Once you get a baseline set, you can then arbitrarily advance the timing a little bit, then go for a test drive and listen for pinging on hills. Keep doing this till you hear pinging, and then back off a little bit. This will be the best timing setting for the set-up you are running at that time.