Vito fuel pump 180 degrees out ?

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Gillsfan

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I've just changed the head gasket on my 2000 x reg vito 2.2 cdi. it is getting fuel to the injectors but won't start. a friend of mine has suggested that the fuel pump might be 180 degrees out. I won't be able to touch the van till tomorrow, just wondered if it sounded reasonable or if anyone has any other suggestions?

Many thanks in advance
 

Cole@MBS

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124 300 CE 24 Coupe, C220CDI, 1959:Morris Minor Dolomite sprint,
Its a pressure only pump, the injectors open when told to by the ECU, the pump has no timing at all.............

You have to crank them to death as a rule to get the fuel pressure up to the rail......
 
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Thank you I have cranked and cranked and cranked it sounds like it wants to start but just won't. there is plenty of fuel getting to the injectors. There is what looks like a sensor on the pressure pump. just wondering what it is for? any other reason why it won't start.
 

Cole@MBS

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You say you have fuel to the injectors, are you cracking open the pipes to the injectors, if so, that's a instant cut of pressure and she will never start, ECU will see pressure loss and stop the injector pulse........
 
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Gillsfan

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Yes I have what do I need to do to restart the injector pulse. Thank you for your help.
 
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excuse my stupid question but it does cough as if it wants to start, does that not mean fuel is getting though. my car repair experiance is classic petrol cars so limited for a modern diesel.
 

Cole@MBS

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Can you see air in the clear plastic fuel pipes. the ECU will send the injector pulses when it is happy that the pressure to the rail is correct, if it is trying to start then the ecu must be seing the pressure from the rail,

Are you sure the timing is correct on the chain????
 
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Gillsfan

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I followed a pocket mechanic manual. I aligned the marks on the cam shafts and the alignment hole before I took the cam shafts out and put them back with the marks/holes aligned. My next step is to take it apart again and triple check. Are there any other alignment marks I should be checking? Is there any other reason it isn’t starting, it is starting to get me down now I’ve spent hours and hours on it. Many Thanks for your help. Just for interest sake what is the sensor on the fuel pump?
 
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Gillsfan

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Thank you very much for your help so far. Have you any ideas what else it could be ane or a quick timing guide.
 

Roxie

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If its coughing then I suspect that it has fuel pressure. So the other thing you need is compression, there is a possibility that you have the timing wrong or damaged the valves as you put the head back on.
 
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Gillsfan

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Next daft question is the cam shaft sensor likely to be at fault. I've read they can fail when hot as mine over heated I'm thinking it could be faulty. Is there anyway of testing it ?
 
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If its coughing then I suspect that it has fuel pressure. So the other thing you need is compression, there is a possibility that you have the timing wrong or damaged the valves as you put the head back on.

Roxie just seen your reply thank you, I'm sure the valve wheren't damaged and i laped them in when I put them back in the head after skiming the head. I'll see if I can borrow a compression tester
 

mersum1es

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Cam shaft sensor allow engine crank but won't start. Check ALL the wires again :neutral:.

How about that air in clear return lines, is there any? Old O-rings of the return lines often won't seal any more when taken out/in. Fuel pressure sensor can be overrided if it's giving false reading.

Fault codes would tell more...
 
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Gillsfan

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Small update the top half of the intake manifold is off so I bougjt a can of easy start and sprayed it into the intake manifold. The engine started and ran briefly, so correct me if I'm wrong but that rules out a compression issue. I'm thinking fueling/sensor problem. The fault code reader I ordered arrived today so I'll get codes. I intend to triple check the timing, check/clean the cam sensor and try again. Is there anyway of testing the sensor?

The is fuel in the lines no air bubbles that I can see, but the fuel does seem to drain back when I stop cranking
 
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Gillsfan

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Small update the top half of the intake manifold is off so I bougjt a can of easy start and sprayed it into the intake manifold. The engine started and ran briefly, so correct me if I'm wrong but that rules out a compression issue. I'm thinking fueling/sensor problem. The fault code reader I ordered arrived today so I'll get codes. I intend to triple check the timing, check/clean the cam sensor and try again. Is there anyway of testing the sensor?

The is fuel in the lines no air bubbles that I can see, but the fuel does seem to drain back when I stop cranking
 
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Gillsfan

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Just taken the cam sensor out and it appears danaged. Please ciukd you kind people have a look at the photos below and confirm that I need a new one please before I buy yet more bits.
20130606_170134.jpg


20130606_170120.jpg


IMG_20130606_170044.jpg


Sorry from the poor quality of the photos best I could do on my phone.
 
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Gillsfan

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Thank you everyone for your help, it was the csm shaft sensor. I have a new problem please see new thread
 

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