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waison Posted on Jan 06, 2016
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Exhaust red hot on a bmw

What causes the exhaust to turn red hot when the car is idling

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paulmacintyre

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  • BMW Master 3,218 Answers
  • Posted on Jan 06, 2016
paulmacintyre
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There is raw fuel entering the exhaust system or the exhaust is plugged

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One side of the turbocharger become red-hot

it is common for turbo to glow under normal use at a high idle its caused by extra fue lgoing to exhaust
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Could the wrong engine computer, bad injectors or a bad catalytic converter cause my engine to misfire and the exhaust to turn red hot right behind the catalytic converter???

Red hot is the best clue. I suspect a bad converter. Try disconnecting the converter and run to test. Look inside the converter to see if it is clogged with melted stuff or carbon. Bad gas in tank? How could it possibly run well if this is true? Clean tank and use fresh fuel.
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Exhaust manifold and pipe glowing red hot hyundai accent 97

Exhaust Glowing Red Hot

Start over--you do not have the timing
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2002 ford escape red hot exhaust spudders and rpms drops to almost stall

Carol Ann,
Your catalytic converter is plugged up [restricted] This is causing the exhaust to get red hot and causing the reduction in power. You need to replace this part [$$$} The catalytic converter failed because you have been driving the car for months with the fuel mixture excessively rich.
You need to find and fix the cause of the rich mixture or your replacement catalytic converter will also fail in a few more months.
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When warm runs rough sets knock sensor code will hardly idle turn front cat cherry red car sat for a year put new gas in it when cold runs great

If the cat is cherry red as you say it is I would check the firing order or timing they may have crossed plug wires this will cause the exhaust manifolds to get red hot and glow let me know if this heled you and good luck.It definitely sound to be timing related or crossed wires.
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What causes the car's exhaust to be red hot

Your Catalytic converter had gotten clog up, to much gas not enough air, will get RED HOT, need to have it check out, it will happen again if a piece blocks the out let again, due to the inside of it is broken.
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2003 escape idling to high, exhaust pipes turning orange red, not cataylic

Hi Whitewolf108,

Is your vehicle a turbo diesel? or if it's petrol, again does it have a turbo?.... The turbo can often cause the effect that your explaining, regarding the orange glow from the exhaust manifold.... To give any more advice, I'll need more info from you....Example: do you live at a high altitude?.....The type of engine?....Any modifications bolted on?.... When did the idling become too high, was anything done to the carburation around that time?

Regards Johngee10
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