Non start

[Lehoux]

Hi, can anyone help ?

fuel pump went on my 1.6 ka so fitted a new one but car still would not start, I have fuel at injectors and a good spark.

if I put some brake cleaner into air box it will start and run ok until I turn it off again then it will just crank unless I do the same ?

[Lehoux]

Nobody then 😩

[Tdci-Peter]

10 hours ago, Lehoux said:

car still would not start, I have fuel at injectors and a good spark.

A petrol engine needs 3 things to run:

1) Fuel. But not too much or too little. Have you checked the plugs after a starting attempt to see if they are wet with petrol?

2) Ignition. A good spark outside the engine is not a100% reliable guide. It takes more voltage to spark under compression. Try with an old plug opened up to double (or more) normal gap. But never crank an engine without all plugs connected (to plug lead and to engine)

3) Compression. If fuel & spark are ok, then low compression is all that is left. Could be cranking too slow, leaking past piston rings, or valve seat damage. A compression test would help diagnose this.

The ability to fire up with "starting fluid" does not really narrow it down, as this stuff can ignite much more easily than petrol, so it can fire despite poor spark, flooding or bad compression.

 

 

[Lehoux]

Hi thanks , I have a great bright blue spark when I earth it out , I've had the injector rail out and they all spray si I know they are working , compression I can't check but I'll try to borrow a gauge . With a booster pack on it spins really fast so it's not that once it's running it's fab until I turn it off . Thanks for the input