Basically, AE85 with smallport 4AGE running factory ECU and sensors etc. Wired in by Toyspeed's very own XS1V (i.e a very good job). Car has exhaust and intake mods but nothing too serious.
Went in for cert and failed on the brake check because the certifier couldn't get it up to 100km/h any more, he said that it had leaned out really bad. This manifests as the engine cutting out under throttle, once it's warm, it isn't an issue when cold.
Other relevant information:
Throttle is very on/off - there is no lightly riding the throttle to maintain 50km/h, it's like at least 1/4 throttle or nothing.
Fuel Pump screams - Factory AE85 tank with external Walbro pump and factory fuel lines. Is ok for a few minutes of driving then starts getting loud. I'm not sure if this is because of a poor return or a poor pickup.
Essentially, I am after advice/ a series of things to check, from free to expensive
My current ideas include:
Blowing out the fuel lines with compressor
Dropping fuel tank to check for crap again
...?
I'm really not sure where to start with checking electrics, I have an idea that the O2 sensor may be involved but don't know how to test it etc. Advice appreciated!
