Technical Dead cinq won't start.

Currently reading:
Technical Dead cinq won't start.

zedorio

New member
Joined
May 11, 2015
Messages
136
Points
27
So fellas, here it goes one more before I take it to the "cimetery of cars". It won't start, it has at least 7litres of 95 octane petrol, has spark, and obviously air. But don't start. It turns over (although it has no battery, but turns with cables and other car) and also tried to jump start for about 5km and nothing. Please help me as my car is stuck in a bad zone (they steal cars) and don't want to scrap yard it yet.
 
So fellas, here it goes one more before I take it to the "cimetery of cars". It won't start, it has at least 7litres of 95 octane petrol, has spark, and obviously air. But don't start. It turns over (although it has no battery, but turns with cables and other car) and also tried to jump start for about 5km and nothing. Please help me as my car is stuck in a bad zone (they steal cars) and don't want to scrap yard it yet.


Hi. Watch for immobiliser..

Does the fuel pump run..?

As a basic test..remove airfilter

Dribble in a cap full of petrol.

If it pops..tries to run..

you've got an issue with no fuel getting through to the cylinders
 
Hi. Watch for immobiliser..

Does the fuel pump run..?

As a basic test..remove airfilter

Dribble in a cap full of petrol.

If it pops..tries to run..

you've got an issue with no fuel getting through to the cylinders
Hello mate, yes, I hear the pump, I have no air filter doe, and no, no pops, although the last time car run it was Poppin. Thanks mate
 
Hello mate, yes, I hear the pump, I have no air filter doe, and no, no pops, although the last time car run it was Poppin. Thanks mate

Im not asking if it normally pops..

But if when you feed it fuel directly..does it attempt to run.?

Look at the thread about the Portugues cinq with similar issue.. crank sensor I believe..
yellowbrick
 
Last edited:
So I've saw the thread, and I'm gonna head to my car to test a donor sensor or to do reset to ECU , I'll post results.
 
So was up late yesterday, tryed the sensor it kept without runin. Then I realised that fuel pump wasn't primingat all. I was hearing a click behind the cluster but nothin more. So found out that my fuel pump was hot as sh** and it wasn't pumpin. I read somewhere that cinq requires at least 1bar of fuel pressure, An I wasn´t gettin nothin. Any different idea or it was the pump that really died?
 
You need to make sure you have just two things. You need benzina and you need leccy.

First of all... fit a battery or your car won't start. Jumping it with a remote battery just to crank the engine is not the same thing as all the circuits being "armed".

Take the fuel hose off the injector and crank the engine. If petrol comes out when you crank the engine (catch it in a small container) then the fuel is getting there and the pump is okay. No fuel means it's a fuel pump problem (or pump isn't getting a signal).

You can check the injector electrics by removing the connector plug and connecting the pins to a meter (or use one of those glass bulbs with the metal tangs on the end, like they put in the number plate lights.. just fold the tangs out and stuff them in the connector block). Again, crank the engine. If you get a signal (or the bulb flashes) then the electric signal to the injector is fine. If you get this far then the problem is electrical.

Take off one of the plug leads... attach it to an old spark plug and rest it on the rocker cover (don't hold it unless you have seriously heavy rubber gloves). Crank the engine and see if the spark plug sparks. If it does, then the ignition circuit is fine.

If all of these things work, then the car *must* start... so I think you will spot a problem.

If you have no signal to the injector, no fuel and no sparks then the problem is a dead TDC sensor.. absolutely nothing else, no matter what anyone tells you.

Unless it's a dead ECU... :D


Ralf S.
 
Last edited:
You need to make sure you have just two things. You need benzina and you need leccy.

First of all... fit a battery or your car won't start. Jumping it with a remote battery just to crank the engine is not the same thing as all the circuits being "armed".

Take the fuel hose off the injector and crank the engine. If petrol comes out when you crank the engine (catch it in a small container) then the fuel is getting there and the pump is okay. No fuel means it's a fuel pump problem (or pump isn't getting a signal).

You can check the injector electrics by removing the connector plug and connecting the pins to a meter (or use one of those glass bulbs with the metal tangs on the end, like they put in the number plate lights.. just fold the tangs out and stuff them in the connector block). Again, crank the engine. If you get a signal (or the bulb flashes) then the electric signal to the injector is fine. If you get this far then the problem is electrical.

Take off one of the plug leads... attach it to an old spark plug and rest it on the rocker cover (don't hold it unless you have seriously heavy rubber gloves). Crank the engine and see if the spark plug sparks. If it does, then the ignition circuit is fine.

If all of these things work, then the car *must* start... so I think you will spot a problem.

If you have no signal to the injector, no fuel and no sparks then the problem is a dead TDC sensor.. absolutely nothing else, no matter what anyone tells you.

Unless it's a dead ECU... :D


Ralf S.
Thank you Ralph for the reply. But I took the pump out and it isn't pushing enough, it's not completely dead, but it's almost dead. Oh and it was hot too, the pump. What I mean is, new spark plugs, injector is fine, sensors all looked up. So we took the pump out, and it was pushing very poorly. I once read the cinq needs 1bar fuel pressure, and I can surely tell it wasn't even near. Any repair? Or just a new one.
 
I would get a new/replacement fuel pump fitted then.

Have you checked the fuel cut off stitch under the centre of the dash? I presume this is ok if the pump is hot.

1bar is correct.

Best of luck with it!
 
Last edited:
I would get a new/replacement fuel pump fitted then.

Have you checked the fuel cut off stitch under the centre of the dash? I presume this is ok if the pump is hot.

1bar is correct.

Best of luck with it!
No, didn't know about that switch, but, if that wasn't that good, it would make the pump "weak"? Last time I drove it, the pump would stop working, then seconds after start working again, so it might be some bad contact, as I heard Cinquecento's fuel pumps are robust, and I never had problem with the fuel pump, and since I bought the car, I made 16k kilometers in 1 year, so I'm quite suspicious that the fuel pump has died, because, it would just stop working. But no, it is working, just working poorly, and something it's just not right. I admit that when I started fixing my cars eletrics some weird stuff started to happen. But again, cars are like this, and this one has 21 years, enumerous problems, and some serious hard past. I want to bring it back again, to its glory, but has been hard as almost everything of it is starting to go away. But it is my first car, it's a memory for life, and I won't get rid of it because it's a part of me, my car is sitting on my garage, with the front all messed up, rear glass broke by the heat: IMG_20170319_161554.jpeg

- and front all f***** up because of the bad people that surrounds me:IMG_20170321_224155.jpeg
But it will become great again. Thanks for all the replies here, it's this kind of community that poor souls will never die in scrapyard.
 
Last edited:
where are you checking the pressure? If you are testing it up engine end it might just have a clogged fuel filter.... Worth changing anyway as they rarely get changed and they are cheap. Remember too that if you pull a pipe off and make the pump prime it might not seem like as high pressure as you expect, it makes 0.8-1.2 bar when the seal system pressurises yes but prob not when just pump to atmosphere - although there should be plenty of fuel coming out.

The fact you say the pump is getting hot kinda says to me you have gone right to the pump though. In which case any debris in the tank or is it looking nice and clean in there as it should.?

And how are you telling the pump is hot being that its inside the sender unit? Pumps do get hot so unless its super hot I'm not sure this is something you should worry about, its half the reason most pumps are in the fuel tank, the fuel keeps them cool... I can only assume you have had the pump out of the sender unit... was there any debris in the bottom of the sender where the fuel is picked up? And is the bag filter still securely attached to the bottom of the pump?

I think if i were you, i'd check again for fuel and spark as per what ralf said, which was bang on bar if the timing has jumped a few teeth it still might not fire up and very well could pop and bang as previously described. Its a non-interference engine so nothing will be broken if it has. So yeah, check for fuel and spark, check the timing, swap out the fuel filter, check the tank and sender for rust and debris. That is all free or very cheap. If after all that it still does not fire up then look at changing the actual pump - or at least i'd want to eliminate the other stuff first before forking out for a pump that may well not need changing.
 
Last edited:
where are you checking the pressure? If you are testing it up engine end it might just have a clogged fuel filter.... Worth changing anyway as they rarely get changed and they are cheap. Remember too that if you pull a pipe off and make the pump prime it might not seem like as high pressure as you expect, it makes 0.8-1.2 bar when the seal system pressurises yes but prob not when just pump to atmosphere - although there should be plenty of fuel coming out.

The fact you say the pump is getting hot kinda says to me you have gone right to the pump though. In which case any debris in the tank or is it looking nice and clean in there as it should.?

And how are you telling the pump is hot being that its inside the sender unit? Pumps do get hot so unless its super hot I'm not sure this is something you should worry about, its half the reason most pumps are in the fuel tank, the fuel keeps them cool... I can only assume you have had the pump out of the sender unit... was there any debris in the bottom of the sender where the fuel is picked up? And is the bag filter still securely attached to the bottom of the pump?

I think if i were you, i'd check again for fuel and spark as per what ralf said, which was bang on bar if the timing has jumped a few teeth it still might not fire up and very well could pop and bang as previously described. Its a non-interference engine so nothing will be broken if it has. So yeah, check for fuel and spark, check the timing, swap out the fuel filter, check the tank and sender for rust and debris. That is all free or very cheap. If after all that it still does not fire up then look at changing the actual pump - or at least i'd want to eliminate the other stuff first before forking out for a pump that may well not need changing.
I will try that today mate, will came back, but, I find weird that, when I was testing the pump, I first disconnected the first 2 fuel pipes secured with a bolt, and tried to start the car (my brother advised me that it would be probable that fuel would spill) but no. Nothing coming out. So, it's something with fuel pump.
 
Back
Top