Starting problem

[UtelemO]

When i start my car cold, it takes ages to fire, turns over no worries but takes a good 10 seconds of turning to fire, any one got ideas of what it could be, I have put in new plugs, leads, petty filter and given it some injector cleaner and got a new rotor button lined up, could it be the fuel pressure regulator? its a 304i

Any help much apreciated

Cheers, Olly

 

[cacaman]

Firstly check for errors, it also could be your crank angle sensor, or your fuel filter is starting to block.

 

[UtelemO]

Fuel filters new and no error codes.

 

[noah_73]

One bottle of injector cleaner won't make ANY differece whatsoever. This stuff needs to be used on a regular basis to have an effect, workshops wouldn't buy an injector cleaning station worth $8-10k if a $12 bottle of chemicals will do the trick.
To your problem, I would say there is a good chance you have dirty injectors but your fuel could be bleeding off somewhere while the car is stationary. First place I would look at is your pressure regulator if you wanted to follow that diagnosis.

 

[maginoodle]

it may be the fuel pump not kicking in. Can you here it when you turn the key on? I know that in the earlier ones if the fuel pump isnt getting power that the once oil pressure builds up a secondary power source kicks in and gives power to the fuel pump.
I am assuming being its a 304 that they run a dizzy so it wont be cas but maybe your hall sensor or something else in the dizzy but i would be checking that the fuel pump is kicking in properly first.

 

[UtelemO]

Cheers for that mate, ill get some more injector cleaners, and look into the fuel pressure regulator.

 

[UtelemO]

yeah sometimes theres a loud vibrating noise coming from the fuel pump area, thats when its running though