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29th March 2018, 15:12 | #1 |
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Automatic black smoke
Hi,
I have just towed my caravan to mabelthorpe and it is blowing black smoke under 2000 revs any ideas what it may be please.
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Peter Rover 75 Tourer Connoisseur CDT Auto Zircon Silver |
29th March 2018, 15:25 | #2 |
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Intercooler hose o rings?
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29th March 2018, 15:37 | #3 |
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Just had new ones fitted at the west mids nano meet.
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29th March 2018, 15:40 | #4 |
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I would agree, I had black smoke on acceleration and a sooty deposit on the rear bumper when my intercooler was cracked. I also found that the car couldn't seem to decide which gear it wanted to be in and kept changing up and down on gentle inclines.
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29th March 2018, 16:14 | #5 |
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Sounds like O rings, the O rings might have popped up wouldn’t be the first time I’ve seen that.
Does it feel a bit sluggish Mick
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[SIGPIC][/SIGPIC] T4 Owner Jobs done : new UBP, Spy hole mod, Rear hub(wheel bearing),plenum cleaned and emptied, Inline thermostat fitted,Full service, In car Digital tv/DVD Bluetooth Satnav etc, Replaced UBP, Restored headlights,Fixed airbag connection.replaced HP pump,replaced rear light seals,changed intercooler O rings. Jobs to do: ,replace drivers lock,.[/SIZE] |
29th March 2018, 16:30 | #6 |
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No it pulls great after 2000 revs. Its as if its got no boost then it flies.
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Peter Rover 75 Tourer Connoisseur CDT Auto Zircon Silver |
29th March 2018, 18:13 | #7 | |
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Quote:
Black Smoke: Over-fueling is the primary cause of black smoke from the exhaust of a diesel engine. Over-fueling can be caused by diesel fuel injector wear that enlarges the nozzle hole or erodes the injector needle and allows excess fuel to flow into the combustion chamber. possible below 2000 revs that your MAF could be way out of spec, did you get it on a T4 at the last meet ? Mick
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[SIGPIC][/SIGPIC] T4 Owner Jobs done : new UBP, Spy hole mod, Rear hub(wheel bearing),plenum cleaned and emptied, Inline thermostat fitted,Full service, In car Digital tv/DVD Bluetooth Satnav etc, Replaced UBP, Restored headlights,Fixed airbag connection.replaced HP pump,replaced rear light seals,changed intercooler O rings. Jobs to do: ,replace drivers lock,.[/SIZE] Last edited by Mickyboy; 29th March 2018 at 18:16.. |
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29th March 2018, 20:45 | #8 |
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EGR valve sticking?
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29th March 2018, 22:26 | #9 |
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Hi Pete.
Your intercooler pipe as seen better days, I would replace it to be honest, it is very flared at the point of intercooler bend fitment. If I remember you have a bypass EGR ? so that would rule out the valve sticking. hopefully the intercooler it's self does not have a tiny hole, or even the intercooler hose which would expand on calling for boost, I still suspect the hose if not then it could be MAF but I am sure Duncan told you it was in spec ? I don't know as I was not round the table at the time. https://www.ebay.co.uk/itm/GENUINE-R...19.m1438.l2649
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30th March 2018, 13:23 | #10 |
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Hi Steve I have ordered a hose and yes Duncan said ithe maf was in spec.
I will see what happens when I change the pipe.
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Peter Rover 75 Tourer Connoisseur CDT Auto Zircon Silver |
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