Took it for a short drive tonight and wen i gav it a little it put out loads of smoke.
I just fitted a nice baffle under the rocker cover pcv valve.
What else could it be? the engine is 11 000 k old, could it be tired already? (Standard bore black block)
Blowing smoke is not cool, need to fix this urgently.
Could it have a blown head gasket? doesnt run hot though.
All replys appeciated!
Thanx,
nathan
My nice engine is blowing quite alot of grey smoke
Started by
_UCV80_
, Sep 15 2006 09:27 PM
40 replies to this topic
#2
_RCK-914_
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Posted 15 September 2006 - 09:59 PM
I put a 173 in the LH and that was breathing real bad, every time I gave it a kick in the guts it would blow smoke, made up a oil catch can and has fixed the problem and it runs much better.
Cheers Chris
Cheers Chris
#3
Tiny
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Posted 15 September 2006 - 10:19 PM
Would suggest if its grey smoke that it's carby tune!
#4
_UCV80_
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Posted 16 September 2006 - 03:31 AM
yea i tuned it myself... which means that is probly the problem. ill fiddle with the carby tomorow,
i made a pretty nice baffle today.. so i think that should of fixed the oil sucking into manifold problem. it was a mager problem before, had oil running out of the booster vacume hose
i might think about doing a compression test.. only problem is i have no compression tester
thanx,
nathan
i made a pretty nice baffle today.. so i think that should of fixed the oil sucking into manifold problem. it was a mager problem before, had oil running out of the booster vacume hose
i might think about doing a compression test.. only problem is i have no compression tester
thanx,
nathan
#5
_LX8VD69_
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Posted 16 September 2006 - 04:03 AM
i agree with tiny, its almost definatly your carby, check your float level first i reckon thats whats wrong with your tune
#6
_UCV80_
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Posted 16 September 2006 - 03:00 PM
Its running perfect today... no smoke.. could have it been because it was a cold night? but wen i looked in the rear view i covered a car in smoke :S
i bought a new pcv valve and backed off the fuel mixture screws 1/2 a turn each,
weird engines..
Thanx,
nathan
i bought a new pcv valve and backed off the fuel mixture screws 1/2 a turn each,
weird engines..
Thanx,
nathan
#8
_[BOTTLEDUP]_
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Posted 16 September 2006 - 03:45 PM
Blue smoke is oil
White smoke is coolant
Black/Grey/brown smoke is fuel
White smoke is coolant
Black/Grey/brown smoke is fuel
#9
_UCV80_
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Posted 16 September 2006 - 03:49 PM
ahh yea... maybe its time for a stock standard injected v8?
#10
boomfunk
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Posted 16 September 2006 - 04:29 PM
if you gunna do that i would get it rebuilt coz you dont want to go thru all that again, least if its new then you no its new....
#12
_UCV80_
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Posted 16 September 2006 - 06:10 PM
yea there fun... but still damn annoying...
maybe ill run a breather on the rocker cover and block off the carby vacume. or would an oil catch can be better?
i recon oil is comin from the tappet cover... that whys its blowing blue..
Im so sick of spending money on this 6.. its rediculous. im temted to get a lazy injected 8 that never needs a tune and always runs the same....
ahh well... ill try n get this 6 running good again... went like shit today, couldnt even put the foot down... the carby linkages stuffed up
,nathan
maybe ill run a breather on the rocker cover and block off the carby vacume. or would an oil catch can be better?
i recon oil is comin from the tappet cover... that whys its blowing blue..
Im so sick of spending money on this 6.. its rediculous. im temted to get a lazy injected 8 that never needs a tune and always runs the same....
ahh well... ill try n get this 6 running good again... went like shit today, couldnt even put the foot down... the carby linkages stuffed up
,nathan
#13
_RCK-914_
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Posted 16 September 2006 - 06:22 PM
Go for the oil catch can, you can build 1 cheap, when you have oil going into your manifold it reduces the octane level of the fuel, so it will make it run shitty.
Cheers Chris
Cheers Chris
#14
_Keithy's_UC_
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Posted 16 September 2006 - 10:41 PM
Ha ha, i had the old oil in the carby trick too... the standard baffles just aint good enough most of the time...
My motor gives a good ol puff of fuel smoke at gear changes if i'm flogging it, it used to just smoke the whole time when i had pcv and baffle probs... Its only cos its a 350 holley and has been tuned to run good the whole time (basically running rich as to keep the idle good)... But at night, exhaust smoke and fumes are amplified by the headlights of the car behind you - i've noticed it too and had mates behind me who say they saw no smoke from the exhaust... Its just the heat vapour rising up past their headlights man... Dont worry too much!!
Cheers
Keith
My motor gives a good ol puff of fuel smoke at gear changes if i'm flogging it, it used to just smoke the whole time when i had pcv and baffle probs... Its only cos its a 350 holley and has been tuned to run good the whole time (basically running rich as to keep the idle good)... But at night, exhaust smoke and fumes are amplified by the headlights of the car behind you - i've noticed it too and had mates behind me who say they saw no smoke from the exhaust... Its just the heat vapour rising up past their headlights man... Dont worry too much!!
Cheers
Keith
#15
_UCV80_
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Posted 17 September 2006 - 04:53 AM
ah kewl... yea wasnt having a good day yesterday lol,
u talking about the 179 or another motor ^^
kewl its not just me! ill run an oil catch can. there quite cheap to buy, is it worth the effort to make one up?
So a oil catch is pretty much... Carby vacume hose to bottle then bottle to pcv valve/rocker cover
if i fix this problem im gonna save up for a dyno tune...
coz i cant tune for shit
better get some sleep.. 5am
cheers,
nathan
u talking about the 179 or another motor ^^
kewl its not just me! ill run an oil catch can. there quite cheap to buy, is it worth the effort to make one up?
So a oil catch is pretty much... Carby vacume hose to bottle then bottle to pcv valve/rocker cover
if i fix this problem im gonna save up for a dyno tune...
coz i cant tune for shit better get some sleep.. 5am
cheers,
nathan
#16
_Keithy's_UC_
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Posted 17 September 2006 - 09:31 AM
Your just crazy (5am)...
Yeah, my 179 used to puff like snoop dog, and it was all because of the pcv and the baffles in the rocker cover... I nary see smoke now, unless its a bit of excess fuel being half burnt in the exhaust or the tyres going up (only at the drag strip), but yeah, my motor now has 10 000km on it - Woo Hoo!!
Holley's are easy to tune dude. If you havent figured it out before i come down i'll show you!
Cheers
Keith
Yeah, my 179 used to puff like snoop dog, and it was all because of the pcv and the baffles in the rocker cover... I nary see smoke now, unless its a bit of excess fuel being half burnt in the exhaust or the tyres going up (only at the drag strip), but yeah, my motor now has 10 000km on it - Woo Hoo!!
Holley's are easy to tune dude. If you havent figured it out before i come down i'll show you!
Cheers
Keith
#18
_UCV80_
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Posted 17 September 2006 - 01:34 PM
cheers ^^^
Mines puffin like bob marley
chek out this polished alloy one , 44$ posted to my door, will this suit wat i need?
EBAY LINK!
does it need to have a breather ontop... it looks like it just fills up then i empty it out. im sure it would take a while to fill.
10 000k's ay! mines done about 11 500ks
(if i wasnt lied to haha).
I can tune a holley to run but that about it..... fuel mixture and idle screws.
Thanx guys,
Nathan
Mines puffin like bob marley
chek out this polished alloy one
, 44$ posted to my door, will this suit wat i need?EBAY LINK!
does it need to have a breather ontop... it looks like it just fills up then i empty it out. im sure it would take a while to fill.
10 000k's ay! mines done about 11 500ks
(if i wasnt lied to haha).I can tune a holley to run
but that about it..... fuel mixture and idle screws.Thanx guys,
Nathan
#19
_RCK-914_
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Posted 17 September 2006 - 02:41 PM
You just plum it inbetween you breather line and the manifold no need for a breather cap if you have 1 on the rockercover, I like the way Bernie has put in the return line from the catch can back to the sump, no mess and if it's sucking up heaps of oil easy to drain straight back to the sump.
Cheers Chris
Cheers Chris
#20
_UCV80_
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Posted 17 September 2006 - 04:17 PM
I installed this baby today..
I havent driven the car yet... i so hope it solves the problem
I havent driven the car yet... i so hope it solves the problem
#21
_Aquarius - LC_
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Posted 17 September 2006 - 04:43 PM
G'day Nathan,
Just caught up on this thread, That catch can should do the job nicely
This is such a common problem with aftermarket rocker covers in conjunction
with roller rockers.
Just be prerared......you might get a shock when you see how much oil
was previously getting sucked into the engine.
Just caught up on this thread, That catch can should do the job nicely
This is such a common problem with aftermarket rocker covers in conjunction
with roller rockers.
Just be prerared......you might get a shock when you see how much oil
was previously getting sucked into the engine.
#22
_UCV80_
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Posted 17 September 2006 - 04:55 PM
runs a dream now its beutiful
i got a rude shock wen i cheked the dip stick earlier
from full to half full.. in 1 week:blink:
Thanx for everyones help,
cheers,
its beutiful i got a rude shock wen i cheked the dip stick earlier
from full to half full.. in 1 week:blink:Thanx for everyones help,
cheers,
#23
_UCV80_
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Posted 17 September 2006 - 05:41 PM
i undid the nut on the bottom to see if i cought any oil... and holy crap! well over a cup of oil shot out! bout 300ml for a 15min drive this was my frist drive with the oil catch can. definatly shoked... !
Anyone with a worked 6 needs an oil catch...!!!!!!!!!!!!!! the engine is running way better now
this was my frist drive with the oil catch can. definatly shoked... !Anyone with a worked 6 needs an oil catch...!!!!!!!!!!!!!! the engine is running way better now
#24
boomfunk
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Posted 17 September 2006 - 06:08 PM
geez 300ml 
, mm, i did have this problem many years ago, what it was put down to was blow by, i kept re ringing the engine which eventualy caused the same problem you got...
i hope you got a fairly large capicity catch can there...
imagine it on a 1 hour drive, you'd almost have to empty it when you got there...
i drove mine for around 6months then got sick and tired of empting the container.. then just rebuilt it, never had a problem after that
im glad you can drive it now !!!
, mm, i did have this problem many years ago, what it was put down to was blow by, i kept re ringing the engine which eventualy caused the same problem you got...i hope you got a fairly large capicity catch can there...
imagine it on a 1 hour drive, you'd almost have to empty it when you got there...
i drove mine for around 6months then got sick and tired of empting the container.. then just rebuilt it, never had a problem after that
im glad you can drive it now !!!
#25
_UCV80_
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Posted 17 September 2006 - 06:56 PM
Im almost 100% sure my baflle in helping it suck oil in lol.. may aswell just take it off
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