Quote:
Originally Posted by Travis89Turbo
I checked valve shim clearance and all were to the lower side of the limits per FSM.
Mileage is only 71,000. I purchased the car from an elderly man that was original owner. All factory service records.
I have an idea. Thinkin back a few post when I had pulled all my turbo stuff off and put the header on to determine which bank of cylinders was giving me trouble. I am wondering if its just the differential pressure between the rear bank that causes the ecu to go hay wire.
What if I weld an 02 bung pre turbo on one of the front bank cylinders to trick the ecu. I know this would cause 6 cyl. To run rich but it should keep the ecu out of lean mode. And the worse that could happen is I blow a motor that I am ready to pull out anyways.
Looking way back when I first bought my na header way before the turbo kit I noticed 6 cyl. Was not near as colorful (almost ss still) compared to the others. I think that has been a weak cyl. For a long time? But the turbo pushed it beyond the ecus threshold after the boost. It did run great and not skip a beat when I was running o2 on the front bank.
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If the #6 valves are bent, you could get 4 new valves, seat them with lapping compound, and then re-shim just those four buckets. *shrug* just brainstorming ... like you said, it's a good time to try options since you're at the point where the engine may have to come out anyway.