Bad plugs, white smoke...

90LxDroptop · 10-03-2002, 11:31 PM

Hey everyone, The past week or two, I've been getting white smoke from the under the hood and rear. I pulled the plugs yesterday to find that the 4th and 8th (closest to driver, and passenger) are black instead of white. I'm hearing that it's a head gasket, and maybe intake gasket. Just trying to get some more input, so I know every possible problem I could be looking at, thanx...

p.s....I recieved my emmissions notice today!!! , NOOOOOOOOOOOOOOO

thanx, Suave

Chevysucks · 10-04-2002, 10:59 AM

hey man I have basically the same problem. when I get on it hard at about 4000-5000 rpm white smoke comes out my tail pipes. I posted a thread about it like a week ago and someone replyed and told me that they have the same problem and it was a head gasket. there was coolant in the pistons and rocker tray. I am getting ready to replace my head gaskets and intake gaskets.

jim_howard_pdx · 10-04-2002, 11:15 AM

Carefully check your intake gaskets first, then if they look good check the intake runners for signs of oil or coolant. No need to bust the head seal if your intake gaskets are to blame. If you decide to change these first, do not fret if you see some white smoke on start up. Run the engine at 2,500 RPM at least 4-5 minutes to burn off the coolant trapped in your ring lands. When it all burns off. You might find your head gaskets are ok.

By the way, buy a compression testor first and let me know what you get cylinder to cylinder. You should have at least 140 lbs everywhere. If one cylinder is low, like a 100 to 115 lb reading, then at least you know which head to pull.

If you change head gaskets. There are some ultra cool graphite head gaskets available. I bought mine from Aldridge motorsports 503-284-8484. Even with detonation bad enough to break 4 of my 8 chrome moly rings, they kept their seal!!!!

10-03-2002, 11:31 PM	#1
90LxDroptop Registered Member Join Date: Jun 2001 Location: Arlington Hts. IL Posts: 315	Bad plugs, white smoke... Hey everyone, The past week or two, I've been getting white smoke from the under the hood and rear. I pulled the plugs yesterday to find that the 4th and 8th (closest to driver, and passenger) are black instead of white. I'm hearing that it's a head gasket, and maybe intake gasket. Just trying to get some more input, so I know every possible problem I could be looking at, thanx... p.s....I recieved my emmissions notice today!!! , NOOOOOOOOOOOOOOO thanx, Suave __________________ 90 LX Convertible 5.0 AOD 3.73 Gears, Underdrive Pulleys, TransGo shift kit, A servo, Subframe Connectors, o/r h-pipe, 2 chamber flows, Pony Wheels

10-04-2002, 10:59 AM	#2
Chevysucks Registered Member Join Date: Mar 2000 Location: Stroudsburg, PA, USA Posts: 150	gasket hey man I have basically the same problem. when I get on it hard at about 4000-5000 rpm white smoke comes out my tail pipes. I posted a thread about it like a week ago and someone replyed and told me that they have the same problem and it was a head gasket. there was coolant in the pistons and rocker tray. I am getting ready to replace my head gaskets and intake gaskets. __________________ 88 Stang 306 ci. GT Mustang heads- ported and polished/milled---Soon to be AFR 185cc 1.7 crane roller rockers/extra hardened pushrods FRPP X-303 Cam Stock Intake-1 inch intake spacer BBK Cold Air Induction Stock Injectors--going to 24 pounders BBK Full Length Headers Mac 2.5 inch Cat-Back 8 Point Cage Sub Frame Connectors World Class T-5 Steeda Shift Cable,Quadrant,Firewall adjuster King Cobra Clutch Pro 5.0 Shifter Alunimum Driveshaft/ Drive shaft loop Kenny Brown suspension 3.55 gears

10-04-2002, 11:15 AM	#3
jim_howard_pdx Registered Member Join Date: Apr 2002 Location: Portland Oregon Posts: 247	Carefully check your intake gaskets first, then if they look good check the intake runners for signs of oil or coolant. No need to bust the head seal if your intake gaskets are to blame. If you decide to change these first, do not fret if you see some white smoke on start up. Run the engine at 2,500 RPM at least 4-5 minutes to burn off the coolant trapped in your ring lands. When it all burns off. You might find your head gaskets are ok. By the way, buy a compression testor first and let me know what you get cylinder to cylinder. You should have at least 140 lbs everywhere. If one cylinder is low, like a 100 to 115 lb reading, then at least you know which head to pull. If you change head gaskets. There are some ultra cool graphite head gaskets available. I bought mine from Aldridge motorsports 503-284-8484. Even with detonation bad enough to break 4 of my 8 chrome moly rings, they kept their seal!!!! __________________ 1966 Customized for daily street and highway domination. 358 Windsor running 425 HP C-4 Auto and 3.25 Posi

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