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#1 |
Registered User
Join Date: Jan 2017
Location: Long Beach, Ca
Posts: 72
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Engine Maintenance
Hi Everyone, Got the ol' girl started today after finishing the brake system and I'm getting a bit of thin smoke out of the exhaust. I havent started the truck in about a month but I was getting the thin smoke then too. What are some "tune up" things I can do to ensure the engine is running in tip-top shape and try to figure out how to mitigate the smoke? The smoke is "thin" and its hard to tell the color - its not black its grayish- white...
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#2 |
Post Whore
![]() ![]() Join Date: May 2015
Location: Alabama
Posts: 14,637
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Re: Engine Maintenance
Does the smoke clear up after a few minutes of running?....maybe a blueish looking smoke?.... could be valve seals if this is true...
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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#3 |
Registered User
Join Date: Sep 2014
Location: USA
Posts: 2,249
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Re: Engine Maintenance
My experience: Rings will often be sticky after a vehicle sits for an extended period. Drive it a bunch and see it the smoke doesn't stop.
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1951 Chevy Panel Truck |
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#4 |
Registered User
Join Date: Jan 2017
Location: Long Beach, Ca
Posts: 72
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Re: Engine Maintenance
Looks like I just had to run it for a few minutes. I drove it to the front yard, let it run for about 10 min and there was no smoke! Yes! One problem averted - on to the next!
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#5 |
Registered User
Join Date: Dec 2011
Location: Moxee WA
Posts: 1,470
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Re: Engine Maintenance
could have just been condensation from sitting for a long period of time. my 327 does that if it hasn't been run at least every few months
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#6 |
Registered User
Join Date: Sep 2014
Location: USA
Posts: 2,249
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Re: Engine Maintenance
You're welcome.
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1951 Chevy Panel Truck |
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#7 |
Registered User
Join Date: Nov 2010
Location: calgary alberta
Posts: 8,027
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Re: Engine Maintenance
could be just the choke pulled out a bit too far or running a bit too rich. this can cause oil burning.
obvious questions are -oil level (not over filled) -last oil change date -grade and quality of engine oil -last time engine was run up to operating temp for extended periods, not just idled to keep things lubed and moving. the "keep things lubed up" is good except that if the engine is not operated at normal temps for an extended period every once in awhile it will not have a chance to burn off any "light ends" (like fuel that has made it down past the rings when running rich for short periods) that get into the oil. that means the oil isn't the proper grade anymore so it is thinner and can cause smoke in the exhaust -condition of breather vent, if this is necked down from build up or it is not functioning properly pressure can build inside the engine and cause oil to get past the rings and valve seals anyway, if it warms up and goes away, mind the choke when it is warming up. too much choke = smoke |
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#8 |
Registered User
Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,503
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Re: Engine Maintenance
Black = gas/fuel
Blue = oil White = water Water doesn't necessarily mean a leak, it can be condensation that accumulates in the pipes and muffler in cooler weather. With today's gas that may well be the smoke you get when it runs rich while the choke is still partially closed and nothing is actually wrong. You just notice it a bit more lately.
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Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around. |
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maintenance, smoke, tune up |
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