91 GT fox overheating
- Thread starter Jim925
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Blown88GT
Founding Member
Phones are for FB. FB is overrun by Russian trolls.
My headers glow cherry red, what gives?
This is usually caused by two things. Either you are running real lean (not enough fuel) or your timing is too late (retarded). A lean cylinder makes a lot more heat and causes the headers to heat-up beyond their normal temperatures, thus causing them to glow. Late (retarded) timing will do the same thing because the fire in the cylinder is still burning when the exhaust valve is opening and the fire goes out into the headers, causing them to glow.
Run a compression test to see if an exhaust valve is not closing all the way.
My headers glow cherry red, what gives?
This is usually caused by two things. Either you are running real lean (not enough fuel) or your timing is too late (retarded). A lean cylinder makes a lot more heat and causes the headers to heat-up beyond their normal temperatures, thus causing them to glow. Late (retarded) timing will do the same thing because the fire in the cylinder is still burning when the exhaust valve is opening and the fire goes out into the headers, causing them to glow.
Run a compression test to see if an exhaust valve is not closing all the way.
I have to wait couple days to do a compression test, in the mean timetime I was wondering, before I put this motor in I removed the egr tube off the back of the motor and installed plugs in the back of the heads, I still have the egr on the TB and plugged in, I also have no vacuume connected to the egr, I've read that egr is exhaust,gas recirculation, to help cool pistons and such. So would having the egr on the TB plugged in with no vacuum cause my headers to get red hot as well, and also the valve covers?
Blown88GT
Founding Member
No. My EGR is inoperable since Megasquirt ECU doesn't control it. EGR is strictly for emission control.
You did a engine swap right? Did you get the ground wire on the drivers side head to firewall reconnected?
Lol sorry it didn't send, so after checking all my grounds 4 times and cleaning all ground connectors I checked the fuse again such by the way is the fuse for the gauges, I pulled the fuse out it was good still, when I put it back in it didn't feel right, the connectors to the fuse were pushed in and not making contact.
There is a sht ton of info in the 5.0 technical/how to threads here just waiting for someone to need them,
Tag, your it!
There are instructions on setting your base idle, how to set your tps, and just about anything else, they are proven methods and done by people that have experience with this type of system, and when in doubt, just ask the members
Tag, your it!
There are instructions on setting your base idle, how to set your tps, and just about anything else, they are proven methods and done by people that have experience with this type of system, and when in doubt, just ask the members
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