[Engine] starting issues

[brian smith]

2010 multispace 1.6hdi 140k miles which will start & drive ok. on restarting it wont, tried priming the fuel & that seems full. Leave for 30mins & it starts. Also has 2 codes appearing
1) Heater plugs 2) crank sensor.
So far changed fuel filter & hope to fit heater plugs. Battery & all other points have been checked
What's next

[jj9]

The crank sensor fault would be the one I would chase first.

Unless you've changed the glow plugs on this type of engine before you best do a bit of reading up on the subject, I'm not trying to frighten you but they can be difficult to remove and can snap unless you are very light handed with them.


Worth watching the video made by a member of this forum showing how he went about glow plug replacement.

https://www.youtube.com/watch?v=qefjCCHx5t0

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[Sol]

I have a wee tip I found to stop you snapping the glow plugs in the head, I bought a small torque wrench of 0-20nm to do the plugs, and when I was taking them out of the previous HDi, the tightening torque was something like 10nm so I set the wrench to 8nm and used that to remove them, that way you can't put more torque on them than the stems will take, if they won't come out at 8nm, keep heating the engine and using penetrant spray until they do come out. As torque wrenches work in both directions it still works but removes the chance of putting too much force on them trying to loosen them.

[jj9]

Good tip 


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[Peter Palmer]

Best way I found at removing glow plugs was with an impact driver, not the big ones for wheel nuts etc but one you would normally put screwdriver bits in with a socket adaptor in the end instead.
I managed to remove a set this way from a 1.6HDI and a vauxhall 1.3 engine which I believe are notoriously bad for snapping, plenty of WD40 first though.

[Lighty]

We have a very low powered air impact wrench for removing glow plugs, it’s fantastic.
Tbh, you fault won’t be the glow plugs.
1st port of call would be the crank sensor.
If not this, it’s much more likely to be an injector leaking off too much pressure when hot.
Personally I would remove all 4 injectors and have them tested, if the data I sensor doesn’t fix it.

[brian smith]

The crank sensor fault would be the one I would chase first.

Unless you've changed the glow plugs on this type of engine before you best do a bit of reading up on the subject, I'm not trying to frighten you but they can be difficult to remove and can snap unless you are very light handed with them.


Worth watching the video made by a member of this forum showing how he went about glow plug replacement.

https://www.youtube.com/watch?v=qefjCCHx5t0

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[brian smith]

Many thanks I have changed the sensor & now all seems to fine, now have only one fault which is the mass air flow sensor which is readiing a signal or wire is not correct !