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Car Wont Start When Cold

falky929

By falky929,
in Engines & Forced Induction

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Chibs Community Regular

Chibs

Posted
Posted

when you say trouble starting.. do you mean you need to turn the ignition more then once and give a bit of gas whilst it idles? if so this happens to mine and i thought it was normal ? =\

falky929 Rising Star

falky929

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Need more info. Car type ? Doe it have a computer ? What plugs are you using ? Have you reset the standard computer if thats what your running ?

its a gts r32 with stock compture the plugs are just standed ngk ones chanded a while back

toygtr Community Regular

toygtr

Posted
Posted

I had problems with this for a bit also rough idling. Was told by racepace that it was my air flow meters. They just needed a clean. Just used throttle body cleaner in a pressure pack. Gave them a quick spray and was all good. Apparently they get a build up of shit on them. Maybe try that.

skylinecouple Experienced

skylinecouple

Posted
Posted

Clean AFM, good start, definately. Could be water temp sensor but I would think that would only keep it in cold start longer. Check all your earths as fuel pump, coils are severely affected by bad earth. Couldn't be fuel filter blocked as it would affect overall performance. Hmmmmmm........

mad082 Grand Master

mad082

Posted
Posted

could be:

cold start valve

IAC valve

AAC valve (or a combination of all 3)

fouled plugs caused by the above

fouled plugs caused by them being too cold temperature plugs

weak coil packs or ignitor

dirty/faulty AFM

and if the ecu is aftermarket, i'd say the tune needs adjusting.

also try letting the fuel pump prime properly before turning the car over. there is a small possibility that the valve in the pump is dodgy and letting the fuel drain back.

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