I did some research and looked at WIS and found I had the gauge system connected the wrong way! I was reading full unregulated pressure at the pumps. There is a port on the lower half of the fuel dist you hook up to and the other hose goes to the upper chamber by removing the line for the cold start valve and hooking up to that port. Readings were normal when I did it the right way. upper chamber reads 80psi lower is 69psi It holds pressure for many hours but goes to zero after about 14 hours. Sometimes it starts good cold sometimes not same when its hot sometimes it fires right up and the other times you have to crank it a whole lot

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88 W124 3.0
96 R129 119eng
06 ML350
98 ML320 sold
02 CLK55 amg