engine break in - glowing header

[Viperwolf1]

I am pretty sure it doesn't matter. It's just a magnetic coil. Like a relay coil, no polarity.

I'm pretty sure some of those have diodes in them so polarity is important. I've witnessed one not working until the wires were swapped.

 

[jim3326]

Your throttle body is upside down so the IAB motor/solenoid would be in the up position, it relies on airflow to help it function, not down in your case. I would, however, flip the throttle over to make it easier to hook up the linkage. It will work either way if you want to leave it like that.

Jim W.

 

[WheelHorse]

Did you happen to have a nice big fan blowing into the front of the vehicle?

I've seen glowing headers on both Ford and GM's when trying to use just a house box fan to break in an engine.

The last breakin I did, I used a blower fan from a HVAC unit. No problems.

 

[67RT]

I had one manifold glowing on my 440 when my timing was off and carb was a little lean.

Are you running a Cat Converter? Probably not, but if so it may be clogged on that side, or the O2 sensor?

 

[sanndmann3]

I had both manifolds glowing as well. Edelbrock heads did not allow stock exhaust manifold to seal completely, allowing oxygen into exhaust... shut it down when I saw my wiring harness melt. don't want to think of what would have happened to the plastic gas line...