Fueling issue
HI guys I have an intermittent issue with my single turbo fd, now it was running really nice, parked it up for few days then came to it was running fine but the afr changed slightly, started running slightly leaner on cruise ect nothing worrying but noticeable change, parked it up left it for a few hours came to drive home running perfect again,
Now parked it up for a week or so started a journey all was fine got about an hour into the journey and it picked up a stutter and started running lean on cruise limped it to a service area left it for an hour was fine, hour into journey happened again, managed to get where I was going, parked it up for the weekend came to drive home was fine for the 2hr drive home, you get the picture lol with the intermittent problem, thought it may of been a faulty lift pump so changed that was running really good again then few days later the problem came back, checked vaultage to pump that seems fine When it starts to stutter afr goes up into 16's 17's so thinking it's a fuel side issue Spec is Single turbo Half bridgeport rebuilt 2000miles ago Spark plugs NGK iridium R7 420 10's 1650cc secondaries 1000cc primaries Bosch 044 external fuel pump Swirl pot Braided fuel lines from fuel tank Torques high flow fuel filter Custom engine loom AEM coils and new coil loom ect Any ideas on what could cause the intermittent problem if you need any other details or spec let me know |
What Wide band?
When was it Calibrated last? How new is it? How old are those INjectors? Check Fuel Filter and in tank Pump Socks |
Innovate wide band not quite sure on the age, sock is fine as the lift pump was changed, need to check the fuel filter injectors are the old style Bosch 1650's which are going to be changed
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