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HELP!!! 4.6iS Bank 2 Camshaft Timing Issue
I posted a few months ago about my ordeal in the What Did You Do thread with timing and CmPS readings and issues getting my X running correctly. I though I had it resolved but my victory was short lived. I also have a thread going on bimmerforums in case you're interested in the back story (it wont add much to the below synopsis) https://www.bimmerforums.com/forum/s...d-INPA-Reading
Since posting last I have retimed the entire engine 3 more times (definition of insanity) with the GAS Master tool set. I couldn't be more certain that the physical/mechanical timing is correct. I have rotated by hand, opened/closed/sealed/re-opened the engine and confirmed after running that the timing is set properly. I have reseated the UTCs multiple times. I have Victor Reinz UTC gaskets installed currently and have a set of Genuine BMW ones on the shelf that just arrived yesterday. Could this really be the difference? We're talking a millimeter, I've compressed the hell out of the gasket, is the sensor too close to the center hub of the reluctor and reading a constant signal? bank one is not having the same issue. The Reluctor wheels are straight and true. The CPS works, I have 4 that I have swapped around, they all read properly on Bank 1 so they are all confirmed working. The wiring (3 wires from connector) has been traced back to the ECU and confirmed to be good. I have ohm'd the wiring both cold and hot and the readings are miliohms (acceptable range) The ECU appears to be free of any damage based on a visual inspection. I haven't tested any of the circuits nor do I have the electronic knowhow to do so proficiently at this point. In its current state Bank one is producing a code 33 with between -6 and -8 degrees at the recorded event. I haven't fine adjusted the reluctor on bank 1 since the last round of timing. This reading is in line with what INPA is showing me in live data. In its current state Bank two is producing a code 34 with 0 degrees at recorded event. Live readings in INPA are showing 41.93 with zero fluctuation. I have been able to get the live readings to do exactly what they are supposed to by loosening the bolt and moving the CmPS on Bank 2. The live readings at idle were in the -5 to -7 range. Thus far I've been able to make this happen once, the sensor was pulled approximately 3mm out of fully seated position. I can make the sensor change readings by removing it with the engine running and waving a metal tool in front of it. As such I am operating under the assumption that the sensor and circuit works properly. And since I was able to get the sensor to produce correct readings by moving it this further confirms that that the physical timing is correct. In addition to this (and possibly complicating the issue) I ham getting roughness readings of 600-800 on cylinders 1 and 2, the rest of the cylinders are below 500 with 3 or 4 staying below 250. I cannot get DIS/GT1 working because of complications with VMWare (I'm trying to figure it out). I am also currently downloading ISTA and should have it up and running by end of week. So have at it folks. Thanks
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Again Daily Driven SC'd 4.6iS, whats the point of having a sweet ride if you dont use it all the time. |
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