pekwah1
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| posted on 5/9/13 at 05:10 PM |
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Black and white smoke
Hi guys,
I have a 1300 xflow with a twin choke carb which was overfueling quite heavily and giving black smoke out of the exhaust.
I have just put on a single choke carb (the original xflow ford one) with a new inlet manifold.
As soon as I started the engine I now have a fair amount of white smoke.
Am I right in thinking excessive white smoke usually means coolant getting burnt?
I used a brand new manifold gasket so don't think it should be getting through from there...?
Ideas?
Cheers
Andy
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iank
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| posted on 5/9/13 at 05:39 PM |
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Yes, White is usually steam (i.e. water) or tyres 
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Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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robinj66
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| posted on 5/9/13 at 05:49 PM |
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Not helpful but - does iT have inside knowledge on a change of Pontiff?
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plentywahalla
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| posted on 5/9/13 at 06:44 PM |
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quote:
Originally posted by iank
Yes, White is usually steam (i.e. water) or tyres
....or oil !!
Rules are for the guidance of wise men ... and the obedience of fools. (anon)
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iank
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| posted on 5/9/13 at 06:56 PM |
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quote:
Originally posted by plentywahalla
quote:
Originally posted by iank
Yes, White is usually steam (i.e. water) or tyres
....or oil !!
Oil smoke is usually blue in my experience.
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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adithorp
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| posted on 5/9/13 at 07:26 PM |
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If it didn't do it before the change and did immediately after, I suggest you recheck your work...
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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Dingz
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| posted on 5/9/13 at 07:35 PM |
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Liked the papal comment!
Phoned the local ramblers club today, but the bloke who answered just
went on and on.
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slingshot2000
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| posted on 5/9/13 at 08:00 PM |
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quote:
Originally posted by Dingz
Liked the papal comment!
Yes, I was also wondering if another Pope'ie had taken early retirement !
Jon
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Daddylonglegs
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| posted on 6/9/13 at 06:04 AM |
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White smoke can also be unburnt fuel. (Although technically not smoke, but easy to test for by smell  )
[Edited on 6/9/13 by Daddylonglegs]
It looks like the Midget is winning at the moment......
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Grimsdale
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| posted on 6/9/13 at 07:54 AM |
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check your inlet manifold gasket, assuming crossflows have a water connection like a pinto does (may be wrong).
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pekwah1
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| posted on 6/9/13 at 08:31 AM |
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Yeh the inlet has a water connection in the middle of the middle two inlet ports.
I did put a brand new gasket on with the new inlet, didn't use any gasket sealant or anything so maybe something has gone wrong there...
So guess i'll be whipping it back off again and getting the sealant out!
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Macbeast
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| posted on 6/9/13 at 09:26 AM |
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Do you have a brake servo ? I had white smoke from an MGB and it turned out to be leaky seals allowing brake fluid to be sucked into the inlet
manifold.
I'm addicted to brake fluid, but I can stop anytime.
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steve m
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| posted on 6/9/13 at 09:30 AM |
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Andy,
does it smoke all of the time? or just on start up?, as it was running fine on the twin choke carb last week ?
and changing the manifold over and another carb would not make a jot of difference
Steve
Thats was probably spelt wrong, or had some grammer, that the "grammer police have to have a moan at
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pekwah1
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| posted on 6/9/13 at 09:35 AM |
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No i had black smoke with the twin choke which i attributed to overfuelling.
It smokes pretty much all the time since fitting the single carb.
To be honest, if the manifold has not created a decent seal to the engine then it could be very possible that coolant is getting into the engine with
the fuel and could give the white smoke?
Well it's the only thing i've changed so kinda makes sense!
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steve m
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| posted on 6/9/13 at 11:45 AM |
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The manifolds on these xflows are SO basic, it can only be a crack in the manifold between water and inlet
as the only water connector is in the middle of the manifold and exits on the side
Steve
Thats was probably spelt wrong, or had some grammer, that the "grammer police have to have a moan at
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pekwah1
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| posted on 6/9/13 at 11:55 AM |
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yeh it is a pretty basic manifold, but i guess its the only thing i've change, and white smoke is usually quite reliably water vapour. So maybe
the new gasket was just no good or i didn't quite clean the surfaces etc...
I think i'll take it back off and check the surfaces, apply some sealant round the water hole and refit.
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Mr Whippy
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| posted on 6/9/13 at 12:03 PM |
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if the white smoke evaporates into the air then it wasn't smoke, check your coolent level, is it going down?
white - steam
blue - oil
black - fuel
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pekwah1
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| posted on 6/9/13 at 03:28 PM |
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ok so 'smoke' might be the wrong terminalogy, but basically white smoke/mist/vapour/steam coming out of the exhaust 
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steve m
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| posted on 6/9/13 at 04:01 PM |
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It may just have to much water in the oil, due to not being used
an oil change and a good ragging might clear that up
Thats was probably spelt wrong, or had some grammer, that the "grammer police have to have a moan at
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Mr Whippy
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| posted on 6/9/13 at 05:29 PM |
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May just be a humid day or water collecting in the silencer drying out. Not concern unless there's loads of steam or your going through coolant
very quickly. A blown head gasket produces loads of steam and is unmistakable.
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pekwah1
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| posted on 7/9/13 at 07:48 PM |
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Well for anyone interested, it was the gasket after all! Loads of coolant inside the manifold.
Didn't use any sealant when I fitted, certainly put plenty on now and all seems good so far!
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steve m
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| posted on 8/9/13 at 07:46 AM |
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Ive NEVER used any sealant on the inlet manifold
Thats was probably spelt wrong, or had some grammer, that the "grammer police have to have a moan at
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pekwah1
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| posted on 8/9/13 at 03:14 PM |
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Hmmm maybe I hadn't done it up very well, maybe the paper type gasket wasn't the best...?
Either way seems spot on with the sealant now!
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