Sorry for my English, I'm from România.
I have a Corrado G60. As a matter of fact now it's a 16vG60 Syncro.
I have installed:
PG block,KR head with ported and polished intakes and outletsABF shortened intake runners,Audi S2 rods and pistons,Audi fuel rail,4bar FPR,stock green G60 injectors.Beru UPT12P (or UPT11P)
Regarding the G-lader, it is Stage 4 ported and polished, so with a 72mm pulley my boost gauge ("Stack") show me 1,2 bar boost.
I'm running with Digifant1 ECU&harness with a 16vG60 chip from Bartek Tuning Gmbh.
The engine starting well, idling good (babbling sometimes and strong gas smelling) powerfully driving with good acceleration. But when the oil reach 80-82 Celsius deg MFA reading (aprox. 90 Celsius deg @coolant), the engine starting to die... During 30 seconds the idle reduces gradually to 0 (zero) but I can keep it alive pumping the gas pedal but with harsh running engine. Hard to start again. Same things happens if I'm driving. But with some black smoke during acceleration
If I let cooling the engine just for some minutes, the engine starts and idling normally but stops again in the same manner in the moment of reaching the same temperature.
Find the spark plugs carbon fouled, regardless the moment I chosed to check.
Generally, it seems the engine is working rich until coolant reach 90'C and lean after that.
WHAT I HAVE TRYED/CHECKED (unsuccessfully):
Checked the groundings of the ECU and O2 sensor.another new sensors (BTS, O2)another checked CO2potanother checked Throttle switchesanother checked ECU with the same 16vG60 chip, borrowed from a friend of mine. Working well on it's car.another fuse/relay paneldismantled the engine bay loom and checked the continuity of all wires from the ECU connector to all sensors and switches connectors (pin to pin and pin by pin)cleaned the injectorschanged the fuel pump. Not new, took from a KR engine. I have a good pressure gauge on the fuel rail, a could check it just at idle or revving the engine on the spot, not driving. (But if the engine is working properly at high rpm under 90'C, I believe the fuel pump is working properly and over this threshold.)checked the impedance of the ignition coil, ignition wires, connectors.
WHAT I DID NOT
- check the VOLTAGE AND IMPEDANCE THAT REACHES THE ECU FROM THE SENSORS AND SWITCHES TO THE ECU PINS
- WHAT DOES THE FUEL PUMP DO WHEN THE PHENOMENON APPEARS
- EXACT IGNITION ADVANCE.
Anyone can tell me what should I do to fix that?