Smoking Exhaust Headers

prosbloom225 · April 21st, 2009, 06:27 PM

I just changed the head gaskets on my 94 3.8, got her all back together, and the exhaust headers get real hot, real quick, and smoke. Smells like burning rubber, yet nothings touching the headers, and its happening equally on both sides. I haven't run it long enough for the coolant to get very hot, so the engine temp is fairly low, yet the heat from around the headers is massive. Anyone have and ideas?

stephen · April 21st, 2009, 09:31 PM

Check that all the electrical connectors and vacuum lines are connected correctly. Possibly something is causing the fuel air ratio to be wrong and increasing the combustion temperature. Possibly some large vacuum leak or the oxygen sensors not connected.

winnie51189 · April 22nd, 2009, 01:19 AM

I had a similar problem with mine after doing a similar tear down but after making sure the coolant was at the proper level it ran much better.

greengoblin · April 22nd, 2009, 01:23 AM

did you change the headers or just the gaskets and if it was just the gaskets why.

rfcsoulja · April 22nd, 2009, 01:33 AM

Did you clean the area on the manifold where the gaskets are before putting on the new ones?

mooses · April 22nd, 2009, 01:47 AM

Did you use PB blaster or some other lubricant on the bolts that could be burning off? Headers are going to get hot quickly...

prosbloom225 · April 22nd, 2009, 03:29 AM

Turns out the coolant level in the engine was super low and everything was getting burning hot

. After 30 minutes of bleeding, finally got coolant into the block, and shes running great now. Good timing, selling her tomorrow to buy a gt

April 21st, 2009, 06:27 PM	#1
prosbloom225 Newbie Join Date: Apr 2009 Posts: 8 iTrader: 0 reviews	Smoking Exhaust Headers I just changed the head gaskets on my 94 3.8, got her all back together, and the exhaust headers get real hot, real quick, and smoke. Smells like burning rubber, yet nothings touching the headers, and its happening equally on both sides. I haven't run it long enough for the coolant to get very hot, so the engine temp is fairly low, yet the heat from around the headers is massive. Anyone have and ideas?

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April 21st, 2009, 09:31 PM	#2
stephen Hardcore Enthusiast Join Date: Feb 2007 Posts: 1,262 iTrader: 0 reviews	Check that all the electrical connectors and vacuum lines are connected correctly. Possibly something is causing the fuel air ratio to be wrong and increasing the combustion temperature. Possibly some large vacuum leak or the oxygen sensors not connected.

April 22nd, 2009, 01:19 AM	#3
winnie51189 Hardcore Enthusiast 2000 Mustang v6 Join Date: Jul 2008 Location: Evansville, Indiana Posts: 1,294 iTrader: 3 reviews	I had a similar problem with mine after doing a similar tear down but after making sure the coolant was at the proper level it ran much better.

April 22nd, 2009, 01:23 AM	#4
greengoblin Regular 1999 Mustang Gt Join Date: Apr 2009 Location: Sidney, OH Posts: 255 iTrader: 0 reviews	did you change the headers or just the gaskets and if it was just the gaskets why.

April 22nd, 2009, 01:33 AM	#5
rfcsoulja Hardcore Enthusiast 01 True Blue v6 to slow to matter Join Date: Mar 2009 Location: Oklahoma Posts: 1,141 iTrader: 0 reviews	Did you clean the area on the manifold where the gaskets are before putting on the new ones?

April 22nd, 2009, 01:47 AM	#6
mooses Regular Join Date: May 2008 Posts: 391 iTrader: 0 reviews	Did you use PB blaster or some other lubricant on the bolts that could be burning off? Headers are going to get hot quickly...

April 22nd, 2009, 03:29 AM	#7
prosbloom225 Newbie Join Date: Apr 2009 Posts: 8 iTrader: 0 reviews	Turns out the coolant level in the engine was super low and everything was getting burning hot . After 30 minutes of bleeding, finally got coolant into the block, and shes running great now. Good timing, selling her tomorrow to buy a gt

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