Quote:
Originally Posted by Tonrogs
@ steve99
I double checked all hoses were clamped under the intake manifold. They are.
I removed the DI computer, cleaned up all points of contact by grinding the paint off of every spot. Resembled with my original DI computer.
Still the same result.
I also plugged in via Techstream. I played with all 4 vvt angles while idling and all function. None seem slow to respond or anything.
Where to go from here?
Oh, while idling, after the rough patch when it smooths out, if I give a steady light throttle to say...2k rpm, the idle will sit and fluctuate and want to die. It actually did die once. Just noticed this after I tested the vvt's. |
As Steve said, it's probably poor port injector tuning. The latencies are likely wrong, and it gets covered up when the direct injection comes in. See if there are any canned latency tables somewhere on the internet for your specific injectors