Quote:
Originally Posted by BimmerBreaker
It sounds to me in the video like it is not getting fuel. Either that or the compression is very low, lower than the values you posted earlier. Or way mistimed engine. It's hard to say for sure but doesn't sound like a very happy M54.
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Neither of us is happy...
The spark plugs smell strongly of fuel, and the wideband O2 says 7.89 AFR, so I think it's getting fuel. The thing is, the engine sounds mostly the same whether I have the fuel turned on or off. The only difference is the smell of the exhaust. That's confusing.
The timing was correct before I put the engine back in the car. I followed the re-timing procedure, and it was spot on. I'm going to double-check that by manually moving cylinder 1 to TDC and checking the timing mark on the timing case.
I'm going to recheck the compression. When I do it, I typically do a 10 count when cranking before taking the reading. I may try a lower number. I have a nagging feeling it is compression since that will take the most work to resolve.
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Donald Foss
2003 E53 3.0i, 5L40e (for now)
- self-rebuilt engine, valves, SL oil pump
- ported heads, both sides
- N55 intake manifold, 70 lb injectors
- GTX 2860R-clone 60mm top-mounted turbo
- progressive slip diff
- under chassis cats
- extra sensors wired to Arduino
- 15" touch screen dash-mounted