Georgia Fiero Club Forum

All Things Fiero => Expert Tech Advice => Topic started by: MikeMac on March 18, 2020, 10:58:45 pm

Title: Aerodonamic car has glowing manifolds
Post by: MikeMac on March 18, 2020, 10:58:45 pm

I cranked up the Aerodonamic car right around sundown to let it run for a while to keep the battery up. I let it run about 5 minutes and when I walked around and checked the engine the exhaust manifolds were a glowin. I've heard of it but never seen it in person. With the little bit of light available they really stood out! I have read on the boards that manifolds glowing in low light isn't unusual but it sure startled me. I need to see if I'm running lean.

If you are nor familiar with the car:
http://www.gafiero.org/bbs/index.php?topic=2734.0

Title: Re: Aerodonamic car has glowing manifolds
Post by: GTRS Fiero on March 18, 2020, 11:01:36 pm

So, running a bit lean.  You can run WinALDL on it, to check the AF ratio.  That may explain why it was dying.

Title: Re: Aerodonamic car has glowing manifolds
Post by: The Art Doctor on March 19, 2020, 08:08:57 am

At night sometimes you can see flames shooting out too if you lack full exhaust, pretty cool.  I would also guess lean.  Do you have a portable A/F unit that clips to the tail pipe for diagnostics?  I don't think they cost too much anymore.

Title: Re: Aerodonamic car has glowing manifolds
Post by: Fierofool on March 19, 2020, 08:59:39 am

Retarded timing can also cause the manifolds to glow.