Velocity

It sounds like either a sensor issue such as cam crank angle or water temperature, a battery issue or faulty earthing. Check your battery first as it is the easiest to do and clean up all your earthing points, the main one being on the gearbox mount if I remember correctly.

Have you checked if there is fuel and spark?
 
If it swings, the problem is not the starter. Let's get that out of the way.

If it swings, it's probably not the battery.

The problem is either air, spark or fuel. Earth has plenty of air and unless your air intake is completely blocked, the car should manage to start, even if it is running rough.

I think that you have a small hole somewhere in your fuel line which is allowing air bubbles in, causing your car to lose its 'prime'.

As the car stands over time, and air enters the fuel system, it starts to allow the fuel to slowly return back down the fuel line towards the tank, leaving an air bubble somewhere between your fuel tank and your engine. If you keep cranking your engine, eventually the fuel pump should push this bubble out into the carburettor and the car will start because it has its fuel supply back. But this is very bad news for your starter motor if you need to do this frequently. They're only designed to work for very short periods of time.

OP, When this problem returns, is it usually after the car has been standing for a long time? This would support my theory. This could also point towards a dead battery though.

Also, you could try to remove the cover from the top of the carburettor. Whilst someone is cranking the engine, drop a few teaspoons of fuel directly into the top of the carburettor. The car should splutter a little and hopefully start. This would also support the theory that your problem is fuel starvation. If this procedure does not help at all, then this could point towards your spark plugs or coil pack being the problem.
 
Neuk_ said:
It sounds like either a sensor issue such as cam crank angle or water temperature, a battery issue or faulty earthing. Check your battery first as it is the easiest to do and clean up all your earthing points, the main one being on the gearbox mount if I remember correctly.

Have you checked if there is fuel and spark?
Click to expand...
Never have enough time to check 100%. But I checked for fuel. There's fuel coming in the line. So don't think it's fuel pump..... Tomorrow will check the other things that the guys suggested
 
bromster said:
If it swings, the problem is not the starter. Let's get that out of the way.

If it swings, it's probably not the battery.

The problem is either air, spark or fuel. Earth has plenty of air and unless your air intake is completely blocked, the car should manage to start, even if it is running rough.

I think that you have a small hole somewhere in your fuel line which is allowing air bubbles in, causing your car to lose its 'prime'.

As the car stands over time, and air enters the fuel system, it starts to allow the fuel to slowly return back down the fuel line towards the tank, leaving an air bubble somewhere between your fuel tank and your engine. If you keep cranking your engine, eventually the fuel pump should push this bubble out into the carburettor and the car will start because it has its fuel supply back. But this is very bad news for your starter motor if you need to do this frequently. They're only designed to work for very short periods of time.

OP, When this problem returns, is it usually after the car has been standing for a long time? This would support my theory. This could also point towards a dead battery though.

Also, you could try to remove the cover from the top of the carburettor. Whilst someone is cranking the engine, drop a few teaspoons of fuel directly into the top of the carburettor. The car should splutter a little and hopefully start. This would also support the theory that your problem is fuel starvation. If this procedure does not help at all, then this could point towards your spark plugs or coil pack being the problem.
Click to expand...
I used the car yesterday but today morning it refused to start. So doubt it has a hole in the fuel line its a 1. 4 injector no carborator it has a 272 cam on it some1 told put the original cam back
 
Nivennikhil said:
Yes autowatch
Click to expand...
My money would be on that.

I read now that you have modified the car. It might be a good idea to list all the mods so the people here trying to help have an idea of what they are dealing with.
 
bromster said:
If it swings, the problem is not the starter. Let's get that out of the way.

If it swings, it's probably not the battery.

The problem is either air, spark or fuel. Earth has plenty of air and unless your air intake is completely blocked, the car should manage to start, even if it is running rough.

I think that you have a small hole somewhere in your fuel line which is allowing air bubbles in, causing your car to lose its 'prime'.

As the car stands over time, and air enters the fuel system, it starts to allow the fuel to slowly return back down the fuel line towards the tank, leaving an air bubble somewhere between your fuel tank and your engine. If you keep cranking your engine, eventually the fuel pump should push this bubble out into the carburettor and the car will start because it has its fuel supply back. But this is very bad news for your starter motor if you need to do this frequently. They're only designed to work for very short periods of time.

OP, When this problem returns, is it usually after the car has been standing for a long time? This would support my theory. This could also point towards a dead battery though.

Also, you could try to remove the cover from the top of the carburettor. Whilst someone is cranking the engine, drop a few teaspoons of fuel directly into the top of the carburettor. The car should splutter a little and hopefully start. This would also support the theory that your problem is fuel starvation. If this procedure does not help at all, then this could point towards your spark plugs or coil pack being the problem.
Click to expand...
The Velociti had fuel injection IIRC.
 
Düber said:
My money would be on that.

I read now that you have modified the car. It might be a good idea to list all the mods so the people here trying to help have an idea of what they are dealing with.
Click to expand...
It's a 2005 velocity 1.4i with a 272 cam it has a autowatch alarm system that was fitted by the previous owner
 
bromster said:
If it swings, the problem is not the starter. Let's get that out of the way.

If it swings, it's probably not the battery.

The problem is either air, spark or fuel. Earth has plenty of air and unless your air intake is completely blocked, the car should manage to start, even if it is running rough.

I think that you have a small hole somewhere in your fuel line which is allowing air bubbles in, causing your car to lose its 'prime'.

As the car stands over time, and air enters the fuel system, it starts to allow the fuel to slowly return back down the fuel line towards the tank, leaving an air bubble somewhere between your fuel tank and your engine. If you keep cranking your engine, eventually the fuel pump should push this bubble out into the carburettor and the car will start because it has its fuel supply back. But this is very bad news for your starter motor if you need to do this frequently. They're only designed to work for very short periods of time.

OP, When this problem returns, is it usually after the car has been standing for a long time? This would support my theory. This could also point towards a dead battery though.

Also, you could try to remove the cover from the top of the carburettor. Whilst someone is cranking the engine, drop a few teaspoons of fuel directly into the top of the carburettor. The car should splutter a little and hopefully start. This would also support the theory that your problem is fuel starvation. If this procedure does not help at all, then this could point towards your spark plugs or coil pack being the problem.
Click to expand...

Unless the air intake is completely blocked which is highly unlikely, the four basic issues for a non running engine are fuel, spark, timing and electrical. A swinging engine is not necessarily a sign that the battery is OK, many modern engine management systems have issues with even small voltage drops. It is always suggested to check for fuel and spark first as they are easy, timing can be really difficult unless it is something like a snapped cambelt or timing chain and electronics are difficult with the myriad of sensors and ECU's involved in modern cars.

This car is a 1.4i so there is no carburetor, hence my suggestion that it may be a battery, earthing or sensor issue.
 
Neuk_ said:
Unless the air intake is completely blocked which is highly unlikely, the four basic issues for a non running engine are fuel, spark, timing and electrical. A swinging engine is not necessarily a sign that the battery is OK, many modern engine management systems have issues with even small voltage drops. It is always suggested to check for fuel and spark first as they are easy, timing can be really difficult unless it is something like a snapped cambelt or timing chain and electronics are difficult with the myriad of sensors and ECU's involved in modern cars.

This car is a 1.4i so there is no carburetor, hence my suggestion that it may be a battery, earthing or sensor issue.
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Thank you guys for the advice I will check all wat was said to check n get back to yourll tomorrow once sorted.
 
bromster said:
If it swings, the problem is not the starter. Let's get that out of the way.

If it swings, it's probably not the battery.

The problem is either air, spark or fuel. Earth has plenty of air and unless your air intake is completely blocked, the car should manage to start, even if it is running rough.

I think that you have a small hole somewhere in your fuel line which is allowing air bubbles in, causing your car to lose its 'prime'.

As the car stands over time, and air enters the fuel system, it starts to allow the fuel to slowly return back down the fuel line towards the tank, leaving an air bubble somewhere between your fuel tank and your engine. If you keep cranking your engine, eventually the fuel pump should push this bubble out into the carburettor and the car will start because it has its fuel supply back. But this is very bad news for your starter motor if you need to do this frequently. They're only designed to work for very short periods of time.

OP, When this problem returns, is it usually after the car has been standing for a long time? This would support my theory. This could also point towards a dead battery though.

Also, you could try to remove the cover from the top of the carburettor. Whilst someone is cranking the engine, drop a few teaspoons of fuel directly into the top of the carburettor. The car should splutter a little and hopefully start. This would also support the theory that your problem is fuel starvation. If this procedure does not help at all, then this could point towards your spark plugs or coil pack being the problem.
Click to expand...

Hey? Carbie on a 06 model?

If not:

Good point, however, that car and most other use a return based fuel supply system so the fuel flows from the pump to the rail and back to the tank with restrictions in the fuel rail allowing the pump to build sufficient pressure, air in the lines is also taken care of as the rail is designed to have bubbles flow past. Every morning before you turn on the ignition the lines will have air in them as there is no need for one way valves like returnless systems, the air will simply be pushed through the line past the rail and back into the tank.
 
gamer16 said:
Hey? Carbie on a 06 model?

If not:

Good point, however, that car and most other use a return based fuel supply system so the fuel flows from the pump to the rail and back to the tank with restrictions in the fuel rail allowing the pump to build sufficient pressure, air in the lines is also taken care of as the rail is designed to have bubbles flow past. Every morning before you turn on the ignition the lines will have air in them as there is no need for one way valves like returnless systems, the air will simply be pushed through the line past the rail and back into the tank.
Click to expand...
In all fairness to him, they all look the same.
 
Nivennikhil said:
I used the car yesterday but today morning it refused to start. So doubt it has a hole in the fuel line its a 1. 4 injector no carborator it has a 272 cam on it some1 told put the original cam back
Click to expand...

I reckon you are just having intermittent issues on a sensor, CO2, MAP, temp etc etc. It happens a lot, unfortunately when Bosch developed the MP9 ECU giving so Many cars good EFI they didn't add abnormal sensor value logging so you cant diagnose a intermittent fault as there is no record of it on the ecu. You can check most of them with a multi meter yourself when cold and hope that you pick up the fault.
 
Thermostat sensor faulty?
maybe i am wrong here... but i remember when i did my bantam conversion the guy hadnt finished sorting the thermostat correctly so car would take a while to start but once a little warm it would start and run with no issues at all.
 
Car swings but people are suggesting the starter or battery could be at fault?

- Coil pack issues are common on these cars as already suggested.
- Fuel pump also a common cause but you've ruled that out by confirming you can see fuel in the line.
- Could be the crank sensor if you've got a spark.
- Since you've replaced the cam, the timing could be out.

Edit: I see you are able to jump-start so it probably isn't a coil\spark replated issue.

Does the car idle smoothly when you jump it?
 
gamer16 said:
Indeed, that's because we bought the tooling for the 1980 MK1 and never changed it, somehow though the original MK1 from das Germans always looked better to me, especially the GTi
Click to expand...

We must have bought later tooling than 1980? The very earlu CitiGolf's looked almost identical to Series II MkI Golf's but there are differences with the latest CitiGolf's being very, very different in a number of area's. I have nothing against CitiGolf's but I prefer MkI Golf's more.
 
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