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The mechanic advised me to install an FCD and to increase the fuel pressure with an adjustable regulator, so any suggestions?
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p.s.
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Mike wrote:CO figure was 4%, fuel pressure without vacuum at idle was 48psi.
Peter Gidden - SBITS wrote:Mike wrote:CO figure was 4%, fuel pressure without vacuum at idle was 48psi.
What was the engine doing when the CO measurement was taken?Idling?
What were the measurements when the engine was reportedly running lean?
bobhatton wrote:What was the air to fuel ratio at max power? That is the important information.
Did they use a wide band sensor?
What is your base igntiming set to?
What fuel did you use?
bobhatton wrote:You need to check your fuel filter, fuel pump and fuel injectors for blockages, there are filters in the pump and injectors
Mike wrote:They did check the filter, which whilst old is apparently ok.![]()
Mike wrote:the injectors are operating at the higher end of the scale duty wise.I assume he was just checking voltages?
Mike wrote:Would that detect a blockage?
Mike wrote:Hmmm, it appears that my MAP sensor(as in the turbo pressure sensor next to the diagnostics port) is disconnected.
Would this mean that the ECU doesn't know how much boost is being generated and therefore isn't increasing the fueling to match?
bobhatton wrote:Mike wrote:Hmmm, it appears that my MAP sensor(as in the turbo pressure sensor next to the diagnostics port) is disconnected.
Would this mean that the ECU doesn't know how much boost is being generated and therefore isn't increasing the fueling to match?
From what I can see you have a Rev 2 so the"map" sensor only works the boost gauge and does nothing for the ECU.
With it disconnected you will never have fuel cut
Mike wrote:Yeah, I guess the ECU looks to the throttle position sensor in order to determine how much fuel is needed rather than the map sensor.