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Polo 9n, engine turns over but won't start

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Hi all, I went to go out in my car this morning and everything looked fine, put the key in and turned and the car wouldn't start, the starter motor just keeps trying to start the engine but can't seem to,

I was out ye night before with no problems what so ever, there's petrol, engine oil, no leaks. The battery warning light is on so I put jump leads between mine and my dads car and still nothing, the engine oil light did come one after a while but I checked and there is plenty of oil there, has anyone heard of this happening before? Or have any idea what could be wrong? Any help is appreciated as always.

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That sounds abit like what happened to mine, turned out to be the ignition switch went...

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A bit late maybe, so did you manage to sort it?

The battery (ignition) warning light should always be 'on' when  the ignition is turned to 'ON', but the engine is not running - It is telling you that the alternator is not charging, which of course, it won't be without the engine running. The time for concern, is when that light comes 'on' as you are driving.

The oil warning light should come 'on' when you switch 'on' the ignition - it will stay 'on' until the engine is running. It's correct title, is oil pressure warning light, so just because there is oil in the sump, it doesn't mean that there is any oil pressure (obviously, if there isn't any oil in the sump, there can't be any pressure either.)

If you still have the problem, do you mean that there is (a) petrol in the petrol tank or (b) petrol at the injectors?

Just because there is petrol in the tank, doesn't mean that it is getting to the injectors - there are quite a few reasons why it may not do so, lack of proper servicing being only one of them.

The essentials for an engine to run are: Good compression (again, lack of servicing could reduce this.) Petrol being injected. A good spark that is correctly timed. (A 'good' spark is blue/white in colour) Yellow/orange sparks are 'weak' sparks and may not allow the engine to run. Again, changing spark plugs should be part of a FULL service.

Even if you have sorted the problem by now, you may find some of the above to be of use in the future.

 

Regards

  • Author
A bit late maybe, so did you manage to sort it?

The battery (ignition) warning light should always be 'on' when  the ignition is turned to 'ON', but the engine is not running - It is telling you that the alternator is not charging, which of course, it won't be without the engine running. The time for concern, is when that light comes 'on' as you are driving.

The oil warning light should come 'on' when you switch 'on' the ignition - it will stay 'on' until the engine is running. It's correct title, is oil pressure warning light, so just because there is oil in the sump, it doesn't mean that there is any oil pressure (obviously, if there isn't any oil in the sump, there can't be any pressure either.)

If you still have the problem, do you mean that there is (a) petrol in the petrol tank or (b) petrol at the injectors?

Just because there is petrol in the tank, doesn't mean that it is getting to the injectors - there are quite a few reasons why it may not do so, lack of proper servicing being only one of them.

The essentials for an engine to run are: Good compression (again, lack of servicing could reduce this.) Petrol being injected. A good spark that is correctly timed. (A 'good' spark is blue/white in colour) Yellow/orange sparks are 'weak' sparks and may not allow the engine to run. Again, changing spark plugs should be part of a FULL service.

Even if you have sorted the problem by now, you may find some of the above to be of use in the future.

 

Regards

Thanks for the reply both of you, that advice will help in the future I'm sure, apparently the problem is the fuel pump, I'm getting it replaced on Tuesday hopefully, would €260 be the right price for a new pump?

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260 Euros sounds a bit high to me, considering that it is a straightforward job to change it.

Suggest that you ring the parts department at your local VW dealership and get the cost of a genuine VW pump from them, that will give you some idea of the maximum price that you would expect to pay.

I would recommend that you also make sure that the petrol filter is changed at the same time.

 

Regards

  • Author

As far as I know it's being bought at a Vw dealer, I did a quick search online and this looks to be the correct pump, there was cheaper ones for €140 but they were just the pump itself not the whole unit. 52bf1f3d611c7ecd7d99e61791998430.jpg

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