bigbeanbags Posted June 21, 2017 Posted June 21, 2017 Afternoon all, I've been having an issue with my car whilst getting it remapped. Brought the car two weeks ago tdo5 fitted, turbo back exhaust, 270lph fuel pump and piper cross panel fliter. When getting it remapped the car was loading with fuel and at the time the boost starts the fuel leans off. 12v at fuel pump, tried 2 fprs, fuel filter wasn't blocked. It's a year 2000 car so has yellow injectors. Any help would be great, thanks.
GeoffLeggy Posted June 21, 2017 Posted June 21, 2017 Welcome! Injectors clean? Maf good? O2 sensor good? Some starting points.
savage bulldogs Posted June 21, 2017 Posted June 21, 2017 Air intake or inlet manifold leak could draw in extra "unmetered air " too
GeoffLeggy Posted June 21, 2017 Posted June 21, 2017 Also check your main turbo hose is tight. Been there before!
kershaw-330s Posted June 21, 2017 Posted June 21, 2017 Tired old pump Sent from my iphone using Tapatalk
JamesJDMwagon Posted June 21, 2017 Posted June 21, 2017 I had a similar problem turned out to be a cracked vac line under the fuel return hose by the turbo. As savage said probably unmetered air getting in after the maf. Smoke test?
bigbeanbags Posted June 21, 2017 Author Posted June 21, 2017 Cheers guys gonna have a look at all the above mentioned. Thanks for the quick reply, appreciate it. 🖒 The fuel pumps brand new from lateral performance, also tried a maf less ecu still had an issue. 1
Tidgy Posted June 21, 2017 Posted June 21, 2017 swap the pump out as a starter, just because its new doesn't mean its not faulty. 1
bigbeanbags Posted June 22, 2017 Author Posted June 22, 2017 Standard, walbro 225 and another same problem. Sent from my SM-G900F using Tapatalk
bigbeanbags Posted June 23, 2017 Author Posted June 23, 2017 I don't have any vacuum in my fuel tank either, no hiss when I remove filler cap. Please tell me if I'm being stupid. Sent from my SM-G900F using Tapatalk
savage bulldogs Posted June 23, 2017 Posted June 23, 2017 Check the vacuum lines for splits especially from the purge solenoid and charcoal canister.
Tidgy Posted June 23, 2017 Posted June 23, 2017 whats the fuel pressure doing when it comes on boost?
kershaw-330s Posted June 24, 2017 Posted June 24, 2017 I don't have any vacuum in my fuel tank either, no hiss when I remove filler cap. Please tell me if I'm being stupid. Sent from my SM-G900F using Tapatalk The tank won't always hiss when you take the cap off
bigbeanbags Posted July 1, 2017 Author Posted July 1, 2017 Sorry been so quiet was waiting on parts fuelab fpr changed turbo intake hose, y pipe (looked like a hairline crack) but whilst looking today I noticed a crack in my knock sensor.... could this be a culprit? Sent from my SM-G900F using Tapatalk
savage bulldogs Posted July 2, 2017 Posted July 2, 2017 Id imagine The mapper should have seen excessive knock while mapping and fuel being added via knock correction if the knock sensor is the issue 2
bigbeanbags Posted July 10, 2017 Author Posted July 10, 2017 Right started to think camshaft sensor..... Sent from my SM-G900F using Tapatalk
bigbeanbags Posted July 28, 2017 Author Posted July 28, 2017 Can anyone interpret this? Sent from my SM-G900F using Tapatalk
Piggysniffer Posted July 28, 2017 Posted July 28, 2017 Air/ fuel correction in row 2 is at 25% on a quick glance and without knowing anything else it looks bad, looks as tho it's trying to add 25% more fuel to the map not sure as don't know the software or driving conditions
Piggysniffer Posted July 28, 2017 Posted July 28, 2017 What you need to do if possible is log the air/fuel ratio all through the rev range and see where it's leaning out
bigbeanbags Posted July 28, 2017 Author Posted July 28, 2017 Leaning out at around 4500rpm mate just popping and bucking only on anything over 1/2 throttle Sent from my SM-G900F using Tapatalk
bigbeanbags Posted July 28, 2017 Author Posted July 28, 2017 May have been idle il check again in the morning Sent from my SM-G900F using Tapatalk
bigbeanbags Posted July 29, 2017 Author Posted July 29, 2017 Definitely leaning at 4000-4500rpm under full throttle seems to be lumpy on whilst warming up but not when on idle Sent from my SM-G900F using Tapatalk
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