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#1
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Black Smoke Blue Smoke
So I know black smoke is fuel and blue is oil. I've got black smoke under hard acceleration but I've never noticed blue smoke out of it before just recently. After I had done some work on it it was idling for several minutes in the street before I was able to drive it back into the garage. I was checking the accelerator linkages and revved it hard from the engine bay. I noticed a significant puff of blue smoke the first time I revved it after it was idling for a few minutes. Didn't do it the following few revs that I gave it. I know it's oil. My question is why only on first rev after a long period of idle? Is it valve seals? I would assume if were rings it would show blue smoke constantly no?
- Peter.
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2021 Chevrolet Spark Formerly... 2000 GMC Sonoma 1981 240D 4spd stick. 347000 miles. Deceased Feb 14 2021 2002 Kia Rio. Worst crap on four wheels 1981 240D 4spd stick. 389000 miles. 1984 123 200 1979 116 280S 1972 Cadillac Sedan DeVille 1971 108 280S |
#2
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Probably the valve seals, yes. From what I understand if it's blowing blue after sitting for a while it's the valve seals.
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-- 1982 Mercedes 300SD (325k miles) 1986 Mercedes 560SEL (212k miles) 2006 VW Jetta TDI (215k miles) |
#3
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Every old-ish diesel I've ever seen does that, even our 10 year old work truck.
Only start worrying about it when it becomes like my car....10 minutes of idling then flooring it = white smoke screen
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1978 300D, 373,000km 617.912, 711.113 5 speed, 7.5mm superpump, HX30W turbo...many, many years in the making.... 1977 280> 300D - 500,000km+ (to be sold...) 1984 240TD>300TD 121,000 miles, *gone* 1977 250 parts car 1988 Toyota Corona 2.0D *gone* 1975 FJ45>HJ45 1981 200>240D (to be sold...) 1999 Hyundai Lantra 1.6 *gone* 1980s Lansing Bagnall FOER 5.2 Forklift (the Mk2 engine hoist) 2001 Holden Rodeo 4JB1T 2WD |
#4
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Sort of what I figured. Thanks.
- Peter.
__________________
2021 Chevrolet Spark Formerly... 2000 GMC Sonoma 1981 240D 4spd stick. 347000 miles. Deceased Feb 14 2021 2002 Kia Rio. Worst crap on four wheels 1981 240D 4spd stick. 389000 miles. 1984 123 200 1979 116 280S 1972 Cadillac Sedan DeVille 1971 108 280S |
#5
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Valve Stem Seals are cheap. The job is not too bad but kind of slow.
Make sure Pistons are at TDC so the Valve does not drop into the Engine.
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84 300D, 82 Volvo 244Gl Diesel |
#6
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Quote:
- Peter.
__________________
2021 Chevrolet Spark Formerly... 2000 GMC Sonoma 1981 240D 4spd stick. 347000 miles. Deceased Feb 14 2021 2002 Kia Rio. Worst crap on four wheels 1981 240D 4spd stick. 389000 miles. 1984 123 200 1979 116 280S 1972 Cadillac Sedan DeVille 1971 108 280S |
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