EVO_THREE
10+ Year Contributor
- 50
- 0
- Nov 6, 2008
-
Perth,
Australia
Got a problem with my Evo 3 (2g). All mods in profile.
Freshly rebuilt (0 km)
Cold start perfect
Cold idle perfect @ 1200 - 1600rpm ( high, but not played with management yet)
Drives under cold (engine) conditions perfect
Once warm - and switches into closed loop - it splutters, won't idle well and revs
like a boxer engine. It's also impossible to drive under load when warm.
This issue occured after my last outing at the drags. End of the track - Full noise and off the gas at 22psi. No bov.. Coughed and spluttered down the return lane. Had to get towed home - even tho it idled ok - perfect.. Would not drive under load.. Revving @ Idle to 3k saw it cough like it had a vacuum leak...
Co-incedently, I melted 3 pitons over time and I did a rebuild after a leak down.. I thought it was the melted pistons that were causing the issue?? Finished the build, restarted perfect and when it got warm - died like it did after the 1/4 mile run..
Replaced / new:
AFM
CAS
Plugs
Coils
Leads
ECU
Ignitor
ISM
O2 Sensor
Boost /leak tested to 24psi - no leaks except for around the throttle butterfly shaft (nothing)
No balance shafts
-64kPa vacum at cold idle (whjile running fine).
Timing is perfect
I'm now running Haltech E11v2 via map sensor, same issue exists.. TPS / CAS, coolant sensors (all triggers) are working fine.
It seems to be an injector issue; pots 1 & 2 are wet - like the injectors are on all the time and it runs rich. I replaced the injectors - issue still exists.
Fuel pressure is not tested, it's my last option.
Anything else?????????? PLEASE, I'm going insane!!!
Freshly rebuilt (0 km)
Cold start perfect
Cold idle perfect @ 1200 - 1600rpm ( high, but not played with management yet)
Drives under cold (engine) conditions perfect
Once warm - and switches into closed loop - it splutters, won't idle well and revs
like a boxer engine. It's also impossible to drive under load when warm.
This issue occured after my last outing at the drags. End of the track - Full noise and off the gas at 22psi. No bov.. Coughed and spluttered down the return lane. Had to get towed home - even tho it idled ok - perfect.. Would not drive under load.. Revving @ Idle to 3k saw it cough like it had a vacuum leak...
Co-incedently, I melted 3 pitons over time and I did a rebuild after a leak down.. I thought it was the melted pistons that were causing the issue?? Finished the build, restarted perfect and when it got warm - died like it did after the 1/4 mile run..
Replaced / new:
AFM
CAS
Plugs
Coils
Leads
ECU
Ignitor
ISM
O2 Sensor
Boost /leak tested to 24psi - no leaks except for around the throttle butterfly shaft (nothing)
No balance shafts
-64kPa vacum at cold idle (whjile running fine).
Timing is perfect
I'm now running Haltech E11v2 via map sensor, same issue exists.. TPS / CAS, coolant sensors (all triggers) are working fine.
It seems to be an injector issue; pots 1 & 2 are wet - like the injectors are on all the time and it runs rich. I replaced the injectors - issue still exists.
Fuel pressure is not tested, it's my last option.
Anything else?????????? PLEASE, I'm going insane!!!
