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Smoking

Transit Mk6 & Mk7 Forum. All Transits 2000 - 2013

Smoking

Postby dredgies » Thu May 01, 2025 12:52 am

Hi guys, just drove from uk to france in à 2002 transit 2.4 diesel. It was running great then a slight loss of power, missing ànd lots of smoke. Got off the ferry in france ànd it ran fine again for 20 minutes then same thing happened. Changed down à gear and started missing, smoking then a massive backfire. Pulled in straight away ànd checked exhaust and the back fire had blown it apart. Any suggestions on what the problem is? Thanks
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Re: Smoking

Postby tranmx2 » Thu May 01, 2025 9:06 am

Back fire in exhaust is likely due to unburnt fuel entering.
Hole in piston, damaged rings, valves.
Was it blowing out of the oil filler?
https://www.youtube.com/watch?v=N-YEYJGD5s0
2012 MK 7 E 5 100-350 3.5 XLWB RWD Duratorq 2.2L CR TC 14 DSL 100/125 PS
Was DRRB 74 KW 100 HP 100 cv. Now CYR5 125 HP. PCM could still be for 100 HP. Siemens Continental fuel system.
OBD2 ELM 327 FTDI with switch from Tunnel rats. Forscan 2.3.46
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Re: Smoking

Postby dredgies » Thu May 01, 2025 11:57 am

No smoke coming out of oil cap when I checked, forgot to mention when it starts to miss fire ànd smoke if I turn it off and start straight away it’s ok again until I let the revs go low. Checked the diesel filter ànd these pipes don’t look original?
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Re: Smoking

Postby tranmx2 » Fri May 02, 2025 8:20 am

Got off the ferry in france ànd it ran fine again for 20 minutes then same thing happened.
Temperature/vibration. Wiring, connectors, pins. Gundge in radiator. Rad fins obstructed. Air flow through engine compartment obstructed.


Changed down à gear and started missing, smoking then a massive backfire.
Temperature/vibration. Wiring, connectors, pins, fuel.
started missing - HP pump/injector sticking/blocked injector nozzle holes, gunge being sucked up in inlet system from air cooler/turbo.
Gunge in inlet system from rocker box vent.
backfire - unburnt fuel in hot exhaust system.

Gunge in air inlet cooler, gunge/carbon in exhaust.
Low coolant/oil levels.
Gunge in radiator.

2002 23 yrs old, has the engine and its compartment been cleaned, rad, oil system, fuel system flushed?
2012 MK 7 E 5 100-350 3.5 XLWB RWD Duratorq 2.2L CR TC 14 DSL 100/125 PS
Was DRRB 74 KW 100 HP 100 cv. Now CYR5 125 HP. PCM could still be for 100 HP. Siemens Continental fuel system.
OBD2 ELM 327 FTDI with switch from Tunnel rats. Forscan 2.3.46
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Re: Smoking

Postby knobby1 » Fri May 02, 2025 9:12 pm

dredgies wrote:Hi guys, just drove from uk to france in à 2002 transit 2.4 diesel. It was running great then a slight loss of power, missing ànd lots of smoke. Got off the ferry in france ànd it ran fine again for 20 minutes then same thing happened. Changed down à gear and started missing, smoking then a massive backfire. Pulled in straight away ànd checked exhaust and the back fire had blown it apart. Any suggestions on what the problem is? Thanks


Assuming TDDi..?? Glow plug light flashing..?? What fault codes are you getting..??

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