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Author
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Topic: White smoke out exhaust?
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BLACK65FORDFALCON
Gearhead Posts: 182
From: Sidney, B.C
Registered: Nov 2004
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posted 06-16-2006 08:55 PM
 
I noticed today that while driving there is alot of white smoke coming out of the driver side exhaust. The other side appears to be fine. What causes white smoke? Is this a fuel related problem? The motor is a 302/aluminum heads/holley 650 DP/MSD ignition. How would I go about fixing this problem? Any help would be appreciated. Thanks.
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68mustang351w
Gearhead Posts: 558
From: San Jose, Ca
Registered: Sep 2004
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posted 06-16-2006 09:17 PM
Usually white smoke indicates you are burning coolant/ antifreeze. Hopefully its just a gasket or small leak and not a cracked head or block. First thing I would do would be to make sure all the head bolts are torqued to spec (if one is too loose, that might be the source of the leak). If they are then I would remove the head and inspect it. Like I said hopefully neither the head or block is cracked. I dont think there could be any other reasons for white smoke. Since you said it only comes out of one tailpipe, you probabbly just have true dual exhaust with no h or x-pipe right? The side blowing the smoke should be the bad head. Im sure others will step in and correct me or give you some tips/ tricks to figure it all out. Hopefully the damage (to the wallet) isnt too much. Gooc luck... David F.
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Dad Vishus
Gearhead Posts: 1153
From: Moscow, Iowa, USA
Registered: Dec 2001
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posted 06-16-2006 09:50 PM
Check the plugs on that side. If one looks funky, thats where the leak is.If its a cracked cylinder wall, a sleeve will be in order. Sleeves are OK, in spite of what some may think. We ran as many as 3 at a time in a race motor. If its a head, you have aluminum heads so that can be welded. Another adavantage of aluminum. The best scenario, of course, is a head gasket. Could also be an intake gasket on a 302.  ------------------
63 Falcon 377 Cleveland stroker Flying Toilet alchohol injection. 6.19 @ 110 MPH 1/8 mile
2002 Ranger FX4 daily driver
2000 F350 PSD Crew cab dually - Like commuting in a B52!!
98 US Cargo Phantom II 28'
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Moneymaker
Administrator Posts: 29200
From: Lyons, IL, USA
Registered: May 99
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posted 06-16-2006 09:53 PM
Probably a blown head gasket.
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Alex Denysenko
Co-Administrator and Moderator NHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First NHRA & IHRA 289 automatic Superstock Mustang in the TENS 06-99
First SS/MA in the TENS 04-03
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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Tom G
Gearhead Posts: 1069
From: Bethlehem, Pa USA
Registered: Nov 2001
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posted 06-16-2006 10:09 PM
quote:
Originally posted by Moneymaker:
Probably a blown head gasket.
Alex! check your classified pots OIL PUMP
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BLACK65FORDFALCON
Gearhead Posts: 182
From: Sidney, B.C
Registered: Nov 2004
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posted 06-17-2006 12:29 AM
Thanks for the tips guys. The radiator is full of coolant, No problems there yet. I checked the oil dip stick and there dosen't appear to be any coolant in there. While driving it today the temp guage was between 170 and 180. It is not over heating. Any more help would be greatly appreciated. Thanks once again guys.
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BLACK65FORDFALCON
Gearhead Posts: 182
From: Sidney, B.C
Registered: Nov 2004
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posted 06-17-2006 12:32 AM
68mustang351W - Just to answer your question. I am using a H pipe.
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Moneymaker
Administrator Posts: 29200
From: Lyons, IL, USA
Registered: May 99
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posted 06-17-2006 10:39 AM
quote:
Originally posted by Tom G:
[QUOTE]Originally posted by Moneymaker:
[b]Probably a blown head gasket.
Alex! check your classified pots OIL PUMP[/B][/QUOTE] Done Tom.
Will need to know which distributor you are using to provide correct billet shaft. ------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First NHRA & IHRA 289 automatic Superstock Mustang in the TENS 06-99
First SS/MA in the TENS 04-03
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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BLACK65FORDFALCON
Gearhead Posts: 182
From: Sidney, B.C
Registered: Nov 2004
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posted 06-27-2006 02:21 PM
OK, I have an update;Ok, Just got back from my mechanics shop. He is saying that all of the above problems are from a worn out cam shaft. He installed a 282S cam in my car approx 6 months ago. The cam only has approx 100 miles on it and now he is saying that it is worn out. He did a compression check and 7 cylinders were approx 165 and the other cylinder was 50 psi. Is this the reason why I have white smoke coming out of my exhaust? My mechanic said that with only running on 7 cylinders and the cam shaft being worn out that the white smoke is from un-burnt fuel. Does this make sence? He has not torn apart the motor yet to confirm this. He pulled off the driver side valve cover and said that there was a problem with one of the intake valves. Any help would be greatly appreciated. Thanks.
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roger
Gearhead Posts: 533
From: ontario, canada
Registered: Aug 2000
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posted 06-27-2006 03:15 PM
As the guys state above, white smoke is usaully water or steam.
caused by blown head gasket, cracked head or bad cylinder.
Get someone to boot it & put your hand in exhaust, any taste like unburnt fuel?
If a cam lobe has gone then he could be right,i guess, just passing unburnt fuel.
But, i;ve never seen that.
Your going to be pulling the head(s) for sure
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68mustang351w
Gearhead Posts: 558
From: San Jose, Ca
Registered: Sep 2004
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posted 06-28-2006 02:14 AM
Unburnt fuel would NOT be white, would it? I would imagine either black or grayish. I think youre going to need to pull the heads. One possible reason for that single cylinder not holding compression is that it is leaking past the gasket or crack in the head/ block and on the intake stroke it's pulling coolant from that same crack/ gasket and burning it, creating the white smoke. I would look into getting another mechanic, at least for a 'second opinion', IMHO. I'm far from an expert though... David F.
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roger
Gearhead Posts: 533
From: ontario, canada
Registered: Aug 2000
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posted 06-28-2006 09:47 AM
Did you read the part where the Mech. said a valve isn;t moving? think it would be a wiped out lobe which still doesn;t explain white smoke, can you not smell anti-freeze out the back?
You say your rad is still full, i;ve had a blown head gasket, with the white smoke out back & the rad did not go down very much so don;t go by that, doesn;t take much of a water leak to blow white smoke/steam
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70rancheroGT
Journeyman Posts: 48
From: Durham, NC
Registered: Mar 2005
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posted 06-28-2006 09:49 AM
If your head gasket is blown and you have enough WHITE smoke coming from the tailpipe that you can clearly see, then you will smell antifreeze. It will be un-mistake-able. Go smell the exhaust.I hope this isn't the same "mechanic" that you had all the trouble with earlier this year. That guy is a hack.
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BLACK65FORDFALCON
Gearhead Posts: 182
From: Sidney, B.C
Registered: Nov 2004
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posted 06-28-2006 11:22 AM
OK, Another update. Apparently the #6 hole has no lift on the intake lobe.That still does NOT explain the white smoke though. I quess this possible cam issue would explain why I have always had low oil pressure since the new 282S cam was installed. With my old 270H cam I had about 60 psi of oil, And about 30 at a hot idle. With the new 282S cam I have had approx 40 psi oil pressure since day one, And only 10-15 at a hot idle. The only change made was a simple cam change. Maybe there was a problem with a lifter on break-in. That would atleast explain the oil pressure issue. Thanks once again.
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Fordwiser
Gearhead Posts: 535
From: Metamora, Illinois
Registered: Dec 2000
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posted 06-28-2006 11:32 AM
Mechanic said thier was a problem with a intake valve on the drivers side, did he show you the the valve not moving or moving very little? Did he cut open the oil filter, to confirm it's full of metal from the lobe? His opinion that the smoke is from unburnt fuel doesn't make much sense, since it's the wrong color and if the intake lobe is gone not much fuel/air mixture would be entering the cylinder anyway.
I'm not saying the lobe isn't wore, but it does sound more like a bad head gasket or crack, maybe you have more then one problem going on.Roger
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johnmustang
Gearhead Posts: 6748
From: British Columbia , Canada
Registered: Nov 2001
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posted 06-28-2006 12:20 PM
BLACK65FORDFALCON,I know a guy in Victoria that is an excellent mechanic and really know his stuff. I have used him in the past when I got stuck with my 65 Fastback and he got it fixed quickly and for a very good price. He has also done a lot of work on 60`s cars for our club and is well respected for his abilities. If you want to talk to him about your current problems email me and I will give you his name and number.
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JOHN
65 FASTBACK 2+2
87 TAURUS WAGON
03 F150 XLT SUPER CREW 4X4 SHORT BOX
Member: PACIFIC COAST MUSTANG ASSOCIATION
Member:Vancouver Island Mustang Association
M&M #1710
65 FASTBACK
2003 F150 XLT SUPER CREW 4X4
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BLACK65FORDFALCON
Gearhead Posts: 182
From: Sidney, B.C
Registered: Nov 2004
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posted 06-28-2006 12:35 PM
John. I sent you an e-mail. Thanks.
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johnmustang
Gearhead Posts: 6748
From: British Columbia , Canada
Registered: Nov 2001
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posted 06-28-2006 01:12 PM
quote:
Originally posted by BLACK65FORDFALCON:
John. I sent you an e-mail. Thanks.
You have mail
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JOHN
65 FASTBACK 2+2
87 TAURUS WAGON
03 F150 XLT SUPER CREW 4X4 SHORT BOX
Member: PACIFIC COAST MUSTANG ASSOCIATION
Member:Vancouver Island Mustang Association
M&M #1710
65 FASTBACK
2003 F150 XLT SUPER CREW 4X4
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Jake11
Gearhead Posts: 246
From: Banning,Ca,USA
Registered: Oct 2005
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posted 06-28-2006 06:55 PM
White smoke= steam.
Head gasket, or coolants getting in the
cyl. somehow. Take the rad. cap off and do
a leakdown test. Good luck, KeithP
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Blacksmith
Gearhead Posts: 604
From: Front Royal, Va., USA
Registered: Feb 2006
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posted 07-03-2006 02:50 PM
Had a 66 GT350H behind me on the track at SAAC-31 this past weekend tell me I was smoking out the right side pipe. most likely a valve I was told by the race crew next to me in pit row.
Check the valves...
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Dad Vishus
Gearhead Posts: 1153
From: Moscow, Iowa, USA
Registered: Dec 2001
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posted 07-03-2006 10:11 PM
Seems to me like the smell of this smoke is the most important clue here.I can't see how an intake valve not opening enough would create unburnt fuel out the exhaust. That cylinder would be recieving an insufficient amount of fuel/air mixture. I suppose its possible, but?? I wonder if its transmission fluid. A bad modulator can allow fluid to be sucked up the vacum line. That creats bluish white smoke that has a unique smell. The cam may well be bad if that valve isn't moving enough, but the smoke may be from a seperate problem. ------------------
63 Falcon 377 Cleveland stroker Flying Toilet alchohol injection. 6.19 @ 110 MPH 1/8 mile
2002 Ranger FX4 daily driver
2000 F350 PSD Crew cab dually - Like commuting in a B52!!
98 US Cargo Phantom II 28'
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