Search



Go Back   MustangForums.com > Ford Mustang Tech > 5.0L (1979-1995) Mustang
Sign in using an external account
Register Forgot Password?
Search

5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Sponsored by Weld Racing


Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
 
 
 
Thread Tools Search this Thread
Old 07-26-2009, 12:47 PM   #1
RawGtPower
3rd Gear Member
 
Join Date: Feb 2006
Location:
Posts: 552
Default White Smoke on start up?

Ive finally got a new battery into the stang this weekend, and ran it for the first time this year. It started up fine and ran alrighht. After shutting it down, and starting it back up when the engine is already warmed up, i get a big puff of white smoke. Any ideas on what could be going wrong? I also get excessive crank pressure that keeps blowing my dipstick out of the tube. I understand this could be PCV related, but ive replaced the PCV and checked the screen and everything is clear.
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
__________________
1994 Mustang Gt, 5 speed, BBK CAI, 75mm MAF, 65mm TB, Trick Flow track heat intake, AFR 165's non-emissions legal, E303 cam, 24# injectors, Hypertuectic Pistons, BBK Headers, O/R x-pipe, SLP loudmouth, 3.73 gears.
RawGtPower is offline   Reply With Quote
Old 07-26-2009, 01:59 PM   #2
mustangsneverdie
5th Gear Member

 
mustangsneverdie's Avatar
 
Join Date: Oct 2007
Vehicle: 1991 mustang
Location: Georgia
Posts: 2,622
Default

you could be losing compression from a broken ring and you could also be losing coolant through a leaky head gasket you don't have any overheating problems do you?
__________________

91 mustang 5.0 lx,306 shortblock,E-303 cam,ported and polished E7's,rebuilt stock T-5,bbk E/L shorty headers,with their 2 1/2" o/r H-pipes,70 mm maf,3G alt.,upr adj. upper c/a's 3:73 gears. race weight with driver:3260,only a 100 lbs. more than the 85

85 mustang: rest in piece

Best time 13.7@ 102 mph 2.074 60' on street tires(in the '85)
Best time 14.3@ 96 mph 2.13 60' on street tires(in the '91)
mustangsneverdie is offline   Reply With Quote
Old 07-26-2009, 02:26 PM   #3
RawGtPower
3rd Gear Member
 
Join Date: Feb 2006
Location:
Posts: 552
Default

Only gets hot, if im sitting in traffic. Runs normal when im getting air through the radiator.
__________________
1994 Mustang Gt, 5 speed, BBK CAI, 75mm MAF, 65mm TB, Trick Flow track heat intake, AFR 165's non-emissions legal, E303 cam, 24# injectors, Hypertuectic Pistons, BBK Headers, O/R x-pipe, SLP loudmouth, 3.73 gears.
RawGtPower is offline   Reply With Quote
Old 07-26-2009, 09:41 PM   #4
jkrum10238
2nd Gear Member
 
Join Date: Oct 2007
Vehicle: 87 ford mustang gt
Location: NJ
Posts: 370
Default

any bubbles in the radiator white smoke is coolant is any leaking onto the exhaust that happened to me it was seeping in threw the flange and blowing white smoke out the tail pipes
__________________
1987 Mustang GT Hatchback stock motor BBK CAI, 255lph fuel pump, BBK Adj fuel pressure reg, msd dist, maximum motorsports caster camber plates, ram hdx clutch, BBK adj clutch cable and firewall adj, 3g alternator, 03-04 cobra replica wheels, strut tower brace, 3.73 gears fresh clutch packs, Gt40ps trickflow stage one and explorer intake in the works
jkrum10238 is offline   Reply With Quote
Old 07-27-2009, 06:24 AM   #5
Genhero
1st Gear Member
 
Genhero's Avatar
 
Join Date: Jul 2009
Vehicle: 95 Mustang GT
Location: MA
Posts: 98
Default

White smoke is definitely coolant. Do a radiator leak down test to see if exhaust gases are being released in the cooling system. It will tell you if you have a blown head gasket.

If you replaced the PCV I would say try using a compression gauge to check the piston rings. Like mustangsneverdie said, you might have a bad piston ring and getting excessive blowby.
__________________
95 Mustang GT - Sold
91 Camaro RS - Sold
Genhero is offline   Reply With Quote
Old 07-27-2009, 08:26 AM   #6
decipha
2nd Gear Member
 
Join Date: Jul 2006
Vehicle: 1990 Ford Tbird SC
Location: Louisiana
Posts: 308
Default

sounds like my 351w after i did the engine swap it was pretty bad the smoke used to bellow out the exhaust and valve covers.

i discovered my smoking problem was due to a blown head gasket, she never ran hot though
decipha is offline   Reply With Quote
Old 07-27-2009, 08:41 AM   #7
rbinck
1st Gear Member
 
rbinck's Avatar
 
Join Date: Jun 2009
Vehicle: 64,cnv,falcon - '65 Ranchero
Location: texas
Posts: 89
Default

Are you getting any coolant in the oil? I used a product called Thermagasket on a 5.0 once with great results. It costs about $100 and may be worth a try if it turns out to be a head gasket. The other option would be to replace the gasket. I'd also eliminate a ring issue with a compression or leak down test as well since you are getting high crankcase pressure.

My 5.0 in my Falcon uses a Lincoln Towncar A/C condenser and a '89 Mustang radiator and here in Houston in 100 degree temps with the a/c going full blast does not get hot at idle in traffic at all. I'm running a Flex-A-Lite black magic fan, but a stock Mustang fan should provide similar air flow, so you should not be getting hot at all I wouldn't think.

Does your coolant look good? If exhaust is getting in there it usually will turn kinda brownish and will gunk up in the bottom of the radiator over time. Try draining some to check. The engine I had the trouble with had gunked up the bottom so bad it would not drain and it still didn't overheat!
__________________
no links to other forums/blogs...can be considered spam thanks
rbinck is offline   Reply With Quote
Old 07-27-2009, 08:41 AM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

Tags
68, coming, excessive, forums, gt, headers, heat, mustang, oil, puff, smoke, smokes, start, startup, tb, up, white

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Bit of smoke....on start up?? 65coupe88hatch 5.0L (1979-1995) Mustang 9 06-08-2008 08:38 PM
Smoke on start up GT06stang 2005 - 2014 Mustangs 14 07-11-2007 08:52 AM
Smoke on start up??? luvs2gofast 4.6L V8 Technical Discussions 17 02-15-2007 10:01 AM

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 07:49 PM.

© Internet Brands, Inc.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.5.2

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup