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#1 |
Registered User
Join Date: Jun 2011
Location: Douglassville PA
Posts: 82
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Smoking
Have a 71 350 smoke comes in cab under hard acceleration, not sure where to start looking to fix problem?
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#2 |
Registered User
Join Date: Jun 2011
Location: Monroe, WI
Posts: 1,415
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Re: Smoking
Open the hood, rev it up by hand and take a look to see where you have a leak...and what color is the smoke.... is it have a blue hue like your burning oil or, is it have a whiteish hue like you are burning coolant... basically we need more info
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Adam My 1967 C10 - Turbo 250 Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=485843 (608) 214-8706 |
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#3 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Smoking
i'd look at the firewall and seal up open holes then the floorboards
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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#4 |
Registered User
Join Date: Jul 2010
Location: Hemet,Ca
Posts: 1,502
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Re: Smoking
sometimes the intake manifold on corners leaks oil and mabye thats hitting the exhaust and making the smoke come in. I know I had that problem on one of my past trucks.
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#5 |
Registered User
Join Date: Jun 2011
Location: Douglassville PA
Posts: 82
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Re: Smoking
It's a blue smoke but the truck is never low on oil when i check it. It did start doing it after i swapped out my intake.
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#6 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,940
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Re: Smoking
Oil from somewhere is getting on the exhaust.
Usual suspects are the oil sending unit on the back of the block. The manifold valley seals, and valve cover seals. Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
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#7 |
Registered User
Join Date: Jun 2011
Location: Douglassville PA
Posts: 82
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Re: Smoking
The only thing that has me confused is it only does it at wot.
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#8 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,940
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Re: Smoking
More oil flow at WOT...
Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
Quote:
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#9 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Smoking
do you have cheap valva covers without baffels under the PVC valve?? they cause oil to b sucked up and burned
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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#10 |
Registered User
![]() Join Date: May 2007
Location: Rapid City South Dakota
Posts: 2,359
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Re: Smoking
I had a car years ago that had a valve cover leak. If I climbed a long hill, or ran for a good distance at wot, I could smell the oil burning off the exhaust. I always figured the extra load, increased the exhaust temp enough to burn what normally didn't burn off.
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Turp Mcspray New life for an old 2wd, farm blazer http://67-72chevytrucks.com/vboard/s...d.php?t=505987 My Blazer build http://67-72chevytrucks.com/vboard/s...d.php?t=342299 |
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#11 |
~Rest In Peace~
Join Date: May 2005
Location: CALIFORNIA NOR CAL
Posts: 9,707
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Re: Smoking
what weight oil are you using start there first ?
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is it fast ? it has a lighting bolt donut? B___H please, I can remove 90% of your so called "beauty" with a kleenex |
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#12 |
Registered User
Join Date: Jun 2011
Location: Douglassville PA
Posts: 82
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Re: Smoking
I am running 20 50 oil
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#13 |
Registered User
Join Date: Aug 2009
Location: St. Paul MN.
Posts: 1,996
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Re: Smoking
engine blow by ?
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Fuzzy |
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#14 |
Cruzin
Join Date: Dec 2009
Location: on the road
Posts: 2,835
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Re: Smoking
My buddy's nova had smoke coming in the interior and out rear when wide open (i was with him one day when he had to go to the potty) so we was on it! i checked it out when he was well..... turned out that the bolt on the front of the block was missing letting oil out and burning on the exhaust. If your block has the two threaded holes on the passenger side bottom front the top one should have a bolt in it. *just a thought*
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Lime Wife's 67https://www.google.com/url?sa=t&rct=...wZEMODaS2d94u8 Back to the Fifties 59 https://www.google.com/url?sa=t&rct=...NAeStpydfrcj_U Proverbs 3:5,6 "Thanks to the Interstate Highway System, it is now possible to travel across the country from coast to coast without seeing anything."Charles Kuralt In memory of our first baby daughter, daddy and mommy love you. Danica Grace 6/26/14
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#15 |
Registered User
Join Date: Jun 2011
Location: Douglassville PA
Posts: 82
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Re: Smoking
Think I got it figured out. swapped out the fuel pump and no more leaking or smoke yet. The pump was leaking and between the gas and oil it was making a huge mess. So now another question is why does this motor feel like a dog. I have a performer plus rv cam with a performer intake and holley 600 carb. Just doesnt feel like it has any type of gettup and go but cruises nice on the highway. Also has a turbo 350 trans converted from a stick.
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#16 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Smoking
rearend ratio and tire size affects acceleration with a heavy vehicle built like a barn
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY Last edited by cdowns; 10-17-2011 at 02:17 PM. |
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