black smoke

blacke

New member
i get a puff of black smoke every time i start my truck. what's the deal with that? the truck has 45k on it mostly stock.
any info welcome. oh yeah the truck also sat for three years.
#708
 

BAD BOW TY

New member
My TY has 70,000 miles and I get it too.Ive been told by alot of people that its our valve seal guides.It seems to be common.If I drive mine regularly it will burn about 2-3 quarts of oil in between changes.I havent noticed any difference in performance though.Im not running synthetic,cause I figure it would burn even more.
 

ty845

New member
If the smoke is black its to much fuel, blue smoke on 4.3 on startup is valve seals most of the time. Check fuel pressure, how much and doe's it bleed off right away on shut off?
 

SY756

New member
1 good turbo + non-synthetic oil + time= 1 bad turbo

the non-synthetic oil will eventually "coke" up the center section of the turbo by being cooked by the heat after each shutdown. It isn't as critical on our trucks since we have a water cooled center section but you really need to be running some type of synthetic. I do believe that you are correct about the synthetic leaking easier but it really isnt worth it.

Blake
If it smokes only on startup after its set for a while then it's your valve seals.
 

BAD BOW TY

New member
Alright, well I'll give it a shot and switch over to mobil 1 next change.They were running regular oil when I bought it.I hope the synthetic doesnt free up a bunch of crap and cause problems,especially the turbo.
 
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