C220 CDI Not Starting and a heavily pregnant wife, can anyone help?

[D-A-V-Y]

Not with the wife, I think I know what to do there! But I'm concerned the garage can't find/fix the fault with my car not starting and they have had it on and off since Friday.

The car is a 2002 C220 CDI auto and I've owned it for about 6 months with no problems. Now when trying to start it the Engine turns but just won't fire, they can start it with those cans of quick start which led them to believe it was a fuel issue, the AA man suggested injectors or leaking pipes from the injectors. The garage (local Merc. specialist) diagnosed the cam position sensor as being faulty and replaced that which got the car starting first time, I drove it away and when I went to start it again had the same problem, they took it back in and have now replaced a relay switch for the fuel pump, I drove it away tonight and now I've got it home, again it won't start. Once its started it runs fine..

With my wife due imminently this is a big concern - Anyone got any sugestions on what it could be??

Any help/advice appreciated.

 

[television]

Sounds like a low pressure problem somewhere, as once it starts its ok

 

[D-A-V-Y]

Sounds like a low pressure problem somewhere, as once it starts its ok

Is pressure only a problem for getting it started? He seemed to think it could be the fuel pump?

 

[television]

Is pressure only a problem for getting it started? He seemed to think it could be the fuel pump?

Could you put up the first 6 numbers of the VIN WDB220???

I see that there are mods for some cars and I can check yours out in the morning

 

[D-A-V-Y]

Could you put up the first 6 numbers of the VIN WDB220???

I see that there are mods for some cars and I can check yours out in the morning

Hi the VIN starts WDC2030062 is that enough? And if its not too cheeky to ask what are the mods you can check, what do they tell you? I have no idea about cars other than driving them in case you hadn't guessed

 

[star]

several thingss,
1. has it got correct fuel in it, a mix of pet/diesel will give poor starting
2. low fuel pressure from high pressure pump. see 3 first
3. injectors leaking( remove leak off pipe and crank, shud be little or no flow from injectors)

 

[Parrot of Doom]

Faulty glow plug relay?

 

[panason1c]

A faulty crankshaft position sensor (cps) can cause similar problems.

 

[television]

I thought about the crankhaft sensor, but as the car starts with quick start,I ruled that out.
with a P1187 fault code, this is a pressure problem and they must be checked in the feed and return or replace the pressure control valve.

this fits the bill from what you describe, the fault can also be a simple O ring failure

The same fault code also indicates the fuel filter and the O rings.

I think that a fault code read out could show you which way to go

 

[D-A-V-Y]

I thought about the crankhaft sensor, but as the car starts with quick start,I ruled that out.
with a P1187 fault code, this is a pressure problem and they must be checked in the feed and return or replace the pressure control valve.

this fits the bill from what you describe, the fault can also be a simple O ring failure

The same fault code also indicates the fuel filter and the O rings.

I think that a fault code read out could show you which way to go

The garage have had it hooked up and thats where the CAM Sensor fault was diagnosed and subsequently replaced, there is currently no fault code being displayed... Managed to get it started and back to them this morning, the technician is highly confused as he says the rail pressure is fine?

 

[BlackC55]

Get the leak off checked!!!!

I have a kit to test it.

 

[BlackC55]

Those cam sensor faults mean nothing. They always come up. They can happily be ignored.

You have a fuel related problem. Where do you live?

 

[D-A-V-Y]

Those cam sensor faults mean nothing. They always come up. They can happily be ignored.

You have a fuel related problem. Where do you live?

Up in the North East - Do you know anywhere up here that can do it?

 

[D-A-V-Y]

Get the leak off checked!!!!

I have a kit to test it.

I did ask him to check it based on your advice on the other forum by the way - I wasn't just ignoring your advice but I posted on both forums last night in the hope of getting a few responses!

 

[panason1c]

there is currently no fault code being displayed... Managed to get it started and back to them this morning, the technician is highly confused as he says the rail pressure is fine?

A faulty cps will not throw up a fault code....i still think that's where your problem is.

 

[television]

A faulty cps will not throw up a fault code....i still think that's where your problem is.

As in my earlier post where I said that it was only the fact that it started with easy start that offsets this,or was it just coincidence, If the fuel line and return pressures ar OK then this sensor is known to produce the same symptoms, I have a total of 6 here sent to me by members in the last few weeks.

they cost £40 from Bosch or £80 from MB

 

[D-A-V-Y]

Garage are saying it can't be the CPS as it sometimes fires and if it was that it would never fire, is that wrong? And if so does anyone know of a North East specialist I could try?

Apparently they have looked at the fuel tank and its only pulling fuel from the passenger side - That side of the tank is empty and the other one is half full.... he now thinks its to do with that and there is too much air being sucked through?

I'm going to fill it up to see if that fixes the issue and if so he says its to do with the tank sensors sending a signal to pull from only one tank but the part to fix that is about £400????

 

[panason1c]

Garage are saying it can't be the CPS as it sometimes fires and if it was that it would never fire, is that wrong? And if so does anyone know of a North East specialist I could try?

Apparently they have looked at the fuel tank and its only pulling fuel from the passenger side - That side of the tank is empty and the other one is half full.... he now thinks its to do with that and there is too much air being sucked through?

I'm going to fill it up to see if that fixes the issue and if so he says its to do with the tank sensors sending a signal to pull from only one tank but the part to fix that is about £400????

cps faults are very often intermittent and can cause problems exactly as yours.

 

[television]

The crank shaft sensor can fail either hot or cold often causing hard to start and cutting out when warm, not starting for 10 mins, then working OK for a while. Any air leak in the return to tank can also cause it

 

[panason1c]

Apparently they have looked at the fuel tank and its only pulling fuel from the passenger side - That side of the tank is empty and the other one is half full.... he now thinks its to do with that and there is too much air being sucked through?

If air was continuously being drawn into the fuel system (as in the above scenario) then the engine, if it did eventually start, would run very roughly with loss of power (though it is unlikely that it would run at all)