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Old 19-12-18, 01:30 PM   #1
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Default 807 EGR cleaning

The emissions light has come on. My mate has the diagnostics equipment and suggests that the EGR system needs cleaning.
It has been blanked off in the past. The car is a 2006 model 2.2 16v HDI and has a pneumatic valve to the left of the engine looking from the front.
How much of the system needs cleaning? Is it even possible given the access available? Is a proprietary treatment worth the trouble?
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Old 19-12-18, 05:05 PM   #2
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If your EGR is blanked then it wont need cleaned its a very simple egr on your engine and is vacuum controlled its really only the later electronic type that give trouble.

Emmission light is more likely to do with the DPF or low boost levels.
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Old 19-12-18, 05:37 PM   #3
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I will investigate the dpf but is there any point in taking out the blank and cleaning/egr replacement? I must say that I was running the car prior to the injector problem and it was blanked then with no problems.
On another question, there are two rubber signal pipes from the back of the engine that may be crossed over. Is there a way I can tell the correct fitting?

Last edited by Humph7ey; 19-12-18 at 06:13 PM.
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Old 19-12-18, 06:16 PM   #4
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The vacuum pipes are a spaghetti mess you need a plumber

The solenoids all have a common feed from the brake vacuum pump this goes to the centre connection the top connection is the outlet to whatever it feeds you will have 1 going to turbo 1 to EGR egr can be plugged turbo must be correct then you may have a couple going to dosser valves and 1 to swirl flaps its really messy
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Old 19-12-18, 06:19 PM   #5
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Do you mean the DPF differential pressure hoses if so one should have a white ring on it which connects to the sensor connector with a white spot on it.

As reliable says if EGR was blanked with no EML then it would not make any difference. A cheap OBDII reader should give a clue as to the fault but a planet read would be better as without codes you could be chasing your tail
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Old 19-12-18, 07:03 PM   #6
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Thanks guys. I should be ok now. I think one one of the plastic pipes bends to the egr valve while the other points to the turbo.

Last edited by Humph7ey; 19-12-18 at 07:11 PM.
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Old 20-12-18, 10:06 AM   #7
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The left valve has wires purple and green with the right one is brown and pink. (l&r viewed from the front)
Both valves have white dots and rings around the front connectors so I really need help to identify the valves. Sorry if I misunderstood your info.
Only the rear pipes were disconnected. I think the pipe to the EGR has the original ring which I connected to the left valve with the purple and green wire.

Last edited by Humph7ey; 20-12-18 at 10:25 AM.
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Old 20-12-18, 01:21 PM   #8
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Just started it and the engine light went out. Must have got the pipes mixed up or even absent. It is still not starting when warm though which is rather disturbing. Struggles to start from cold. I will get the guy with the diagnostics to come back.
Thanks for your help guys.
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Old 20-12-18, 02:23 PM   #9
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Check the cranking speed and fuel pressure while cranking

Cranking speed needs to be 250 rpm min
Fuel pressure should be at 298 as soon as engine cranks even before it fires.
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Old 20-12-18, 02:52 PM   #10
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Is that the starter motor speed, pressure in Bar?

Last edited by Humph7ey; 20-12-18 at 03:44 PM.
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