cherry red exhaust manifold
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#2
First off, welcome to the forum. Sorry that your first post had to be an issue like this.
No engine codes? Will the car drive ok despite the rough idle? I'd recheck the s/c vacuum line and the intercooler boots. Did you get new gaskets for the s/c to manifold and s/c to intercooler horn contact points? Perhaps this is it.
I do not know if these things would cause the red hot exhaust, but the could certainly cause the rough idle. Hopefully someone who works on these cars for a living will be able to chime in with some ideas. I also moved the thread for more exposure.
No engine codes? Will the car drive ok despite the rough idle? I'd recheck the s/c vacuum line and the intercooler boots. Did you get new gaskets for the s/c to manifold and s/c to intercooler horn contact points? Perhaps this is it.
I do not know if these things would cause the red hot exhaust, but the could certainly cause the rough idle. Hopefully someone who works on these cars for a living will be able to chime in with some ideas. I also moved the thread for more exposure.
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#8
For the EGT to be so high that the manifold glows red, that would take a really lean condition. On my kart the piston melted before the manifold started to glow.
Rich
#9
#10
Here's the scenario. A rich mixture and a small exhaust manifold leak. All the extra fuel gets burned in the manifold when oxygen is drawn in through the leak.
For the EGT to be so high that the manifold glows red, that would take a really lean condition. On my kart the piston melted before the manifold started to glow.
Rich
For the EGT to be so high that the manifold glows red, that would take a really lean condition. On my kart the piston melted before the manifold started to glow.
Rich
#11
Are you still having this issue ?
I had the same problem when rebuilding my engine.
While reading this thread, I saw that someone mentioned the supercharger and had an idea that the bypass valve was not working.
Correct! Connected bypass vacuum valve to supercharger and I got nice idle and brown exhaust again
I had the same problem when rebuilding my engine.
While reading this thread, I saw that someone mentioned the supercharger and had an idea that the bypass valve was not working.
Correct! Connected bypass vacuum valve to supercharger and I got nice idle and brown exhaust again
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greystone (03-20-2021)
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