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Hot Start

Room42

By Room42,
in Engines & Forced Induction

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Room42

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Title says it all, almost. My car starts first time immediately when it's cold. When it's hot it cranks for a lot longer. Too long. I have tried adding and removing fuel from the cranking setup. A tuner I spoke to told me to watch what cell it is using when I turn the key and add heaps of fuel there. There is as much fuel as I can add in the first 4 cells of the fuel map and no better. I haven't changed the voltage on the fuel pump yet. Ideas?

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Room42 Proficient

Room42

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Mine is does it consistently. Could it be because of having 9xxcc injectors? The latency time is not far from stock. 0.58ms Although it does start fine every time when its cold. Could it be coils? Most of the time it starts with a miss for about 2 seconds. There are new properly gapped plugs in it.

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Room42 Proficient

Room42

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Cos I have to let the O2 sensor warm up I tried something different. I let it warm up on accessories and then when its ready I turn the key to on. then start the car halfway through the prime and it starts first time. It must have been losing pressure in the rail cos it primed then didn't get started till the sensor was warm 15 seconds later.

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Room42 Proficient

Room42

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Are u talking about the wideband? U dont have to let

It warm up. Start the car then plug it in.

It says in the instructions to turn on the power to the wideband and when the light stops flashing to start it. This is to let the heater in the sensor warm up and stop the sensor getting clogged with soot. They say it prolongs sensor life. Everything about the wideband gauge is soldered in. There is no plugging in. Have a look in the wideband thread. I put a clip in there explaining about how it works.

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