The headers in my car are glowing. The do it at idle and while reving it up. I have a dfi and changed it from lean to rich and back again and nothing changes. I have checked the timing and it is at 12-14 at idle and 36-38 at full advance by 3000rpm. I checked the dist and it is istalled right. I am lost here and do not know what else to do. Any help would be good here.

Thanx
Drew

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I know if a cat is clogged it will glow, could it also cause headers to glow.

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'86 IROC
T-TOPS, TINTED WINDOWS, BRAKE LIGHT BLACKOUTS
GM GOODWRENCH 350
EDELBROCK TES HEADERS
3" Hooker CatBack w/Aero Chamber muffler
EDELBROCK 600CFM CARB.
KN AIRFILTER
ACCEL HEI DISTRIBUTOR
160* Stat
3:73 Posi
Rebuilt 700R4
B&M Megashifter, 5" Autometer Tach w/shift lite

 

This happened to my friend's mustang last week and we tried retarding the timing on his car and it got the headers to stop glowing for a few hours but it acted right back up again. We were thinking that they might be clogged somehow. He had it brought into his mechanic but we still haven't heard from him yet. But we're guessing that the headers have some kind of obstruction that is causing them to retain too much heat.



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"Turn a 12 second dream into a 10 second reality"

 

12-14° at idle is your problem. That's roughly equivalent to taking an old vacuum advance distributor and setting it to about 0° static.

You should have closer to 20° of total advance at idle. Your timing is so far retarded that combustion is still going on in your headers.

You should see that 36-38° at full load at 3000 RPM. It should have that extra 12° or so of "vacuum advance" if you're looking at it at no-load.

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"So many Mustangs, so little time..."
ICON Motorsports

 

Well I tried advancing the timing and that does not work either. I am not sure what else to do, but this is starting to frustrate me. I had the timing at about 18-20 at idle and it still still while reving it slightly while idleing. I think this is a no load situation. I took the car down the street and I ran out and opened the hood and the started to glow about 20 sec after I stoped driving. I am wondering if load and no load conditions are not properly setup in my dfi. Thanx for the help so far. I just hope to have this done soon its driving me nuts! Any other ideas would be great too..

Drew