vs ecotec hard to start engine cold

[baza]

g`day guys i need some help , my wifes vs is hard to start when the engine is cold. starts fine when engine has warmed up. have done a fault code check, full cycle of code 12, engine runs good when started . battery is fine 1 year old , alternator puts out 14.2 volts engine running , new leads and spark plugs 6 months ago. have cleaned throttlebody and airflow meter, last year CAS was replaced. last week i removed coils and checked resistance with multimeter, readings within specs . could it be clogged fuel filter?. will be gratefull for any ideas , thanks

[FstStig]

Very well could be just a clogged Fuel filter, cheap and easy as to replace and if it hasn't been changed for a while then that would be the first thing I would be changing. If its still doing that i would be looking at maybe your Starter Motor is on its way out, The prongs that the solenoid slides along could be getting worn making it hard to create a spark. If your going to change it, make sure you depressurize your fuel lines first.

[baza]

Very well could be just a clogged Fuel filter, cheap and easy as to replace and if it hasn't been changed for a while then that would be the first thing I would be changing. If its still doing that i would be looking at maybe your Starter Motor is on its way out, The prongs that the solenoid slides along could be getting worn making it hard to create a spark. If your going to change it, make sure you depressurize your fuel lines first.

thanks Mumboman i think starter motor is ok , engine cranks good , just takes long time to fire up when cold. i will change fuel filter , thanks again for your reply.

[FstStig]

No worries mate, if you need a hand with anything let me know, I'm basically on the Central Coast as well. What part of the Central Coast are you on?

[baza]

No worries mate, if you need a hand with anything let me know, I'm basically on the Central Coast as well. What part of the Central Coast are you on?

i am down at gorokan Mumboman , very kind of you to offer help.

[FstStig]

Awesome man, like I said man ever need a hand I'm only 15mins away. Let us know how the Fuel Filter goes.

[Bizmark]

Injectors themselves could also be to blame. Though they aren't cheap to have a workshop check them out. Could be worth looking at if the fuel filter change doesn't bring any improvements.

[STL17]

my vs v6 in my vn done the same thing it ended up being the tps

[baza]

thanks people for your replies , i will replace fuel filter and see if that helps . if that doesnt fix it will try TPS and coolant temp sensor.

[pomiedore vs]

I have the exact same problem.
It isn't the coolant temp sender or the fuel filter. Trust me.
Possibly injectors?
Try the TPS and let us know how you go.

[baza]

today i put a new fuel filter on , and also replaced the TPS and the coolant temp sensor .[ GMH f*****g xpensive ] . and i took the vacumn hose off the fuel pressure regulator no petrol came out so thats ok. i wont know how it is till 2morrow , when i can do a cold start.

[baza]

today i put a new fuel filter on , and also replaced the TPS and the coolant temp sensor .[ GMH f*****g xpensive ] . and i took the vacumn hose off the fuel pressure regulator no petrol came out so thats ok. i wont know how it is till 2morrow , when i can do a cold start.

did a cold start this morning , still the same really , took about 15 seconds of cranking b4 it started, anyone got any more ideas? the car has a Greenfoam memcal in it and uses 95 premium unleaded fuel . should i try some injector cleaner , or should i put the standard memcal back in ?

[delcowizzid]

does the fuel pump prime before starting the car

[baza]

does the fuel pump prime before starting the car

yes it does Delco , we turn the ignition on for a few seconds b4 cranking it , can hear the pump priming .