Member Since: 19 Sep 2021
Location: Yorkshire
Posts: 38
Smoke, lots of it
Hi I've just replaced the timing chain in the drivers side after it failed, its timed up right and drives with plenty of power, I'm just at a loss of to what would be the cause of this?
19th Sep 2021 6:54 pm
munst
Member Since: 16 Sep 2020
Location: GLOS
Posts: 155
Belt snapped whilst running? I'd be amazed if you don't have valve damage somewhere.
Edit - sorry thought it was BELT not CHAIN.
19th Sep 2021 7:24 pm
kajtzu
Member Since: 11 Aug 2017
Location: Helsinki
Posts: 6570
Any chance (I guess some…….) that the engine is foo… I mean cooked? Thick white smoke tends to mean head gasket failure, cracked engine block, etc. how is your coolant level? The white smoke is either water or coolant.
19th Sep 2021 7:31 pm
Disco_Mikey
Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20729
Is the oil level dropping? Looks like it may have cracked a piston...My D3 Build Thread
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
munst wrote:
Belt snapped whilst running? I'd be amazed if you don't have valve damage somewhere.
Edit - sorry thought it was BELT not CHAIN.
They are both!
19th Sep 2021 7:59 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10362
If its only done it once, it could just be unburnt fuel in the exhaust burning off. They do that on chain failure.
If its going it all the time, then something worse
19th Sep 2021 8:29 pm
trob86
Member Since: 19 Sep 2021
Location: Yorkshire
Posts: 38
It does it once it get warm and you put it under load, I drilled the cat as I thought that would have been full of fuel but it wasn't, also oil and water levels are fine
19th Sep 2021 8:34 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10362
Check for balance fault codes.
Read offsets at idle. This may point to a cylinder with damage
19th Sep 2021 9:30 pm
Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1782
Could be an EGR. We got smoke like that when we put "Redex" in the fuel to loosen up the carbon.
25th Sep 2021 9:46 am
OvalAutos
Member Since: 28 Dec 2018
Location: Cradley Heath
Posts: 382
Pete K wrote:
If its only done it once, it could just be unburnt fuel in the exhaust burning off. They do that on chain failure.
If its going it all the time, then something worse
Because the chain drives the inlet valves, if the engine was run with only one head working, it will have dumped unburnt fuel out the exhaust valves (driving by the belt) on the knackered head. It can take quite a run to burn off even a little fuel (or oil) in the exhaust. You just need to drive it like you're James Bond and it will eventually clear.Joe
25th Sep 2021 11:13 am
trob86
Member Since: 19 Sep 2021
Location: Yorkshire
Posts: 38
So given it a better run, most of the smoke has cleared but now smells very oily, the level was above max on dipstick so drained some out, would this have got into exhaust/turbo? Or is it engine that's cream crackered?
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