Why would my exhaust manifold be glowing red while ideling?

Asked by Mar 09, 2015 at 03:35 PM about the 1991 Chevrolet S-10

Question type: Maintenance & Repair

After ideling for about 30 seconds my exhaust manifold glows red hot. we have tested just about everything and it still continues to glow

9 Answers

18,245

It's running super lean. Don't drive it like that

We can't figure out why it's running lean

18,245

Which motor are we dealing with?

Chevy 2.5

18,245

It's either vacuum leaks, low fuel pressure, fuel injector issue, o2 sensor or the pcm is going out

We have tested all of those and everything came up normal

18,245

What was the o2 reading? Or did you just replace it?

It was reading .05 so we replaced

18,245

.05 means it's reading super lean so it was probably correct. What's your fuel pressure at?

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