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Hard Starting

Engine

Model: 930, Year:1987, Mileage:120000, Type of use:Street use only
Hello,My car has been having intial (cold) start issues. In the past it would chug to life but, always started and now not as good. In the past few weeks I replaced the accumulator, check valve, (on the front pump) fuel filter and rear fuel pump. My cold control pressure at 33c is 3.3 bar and warm pressure at 3.8 bar. My AAR cold is open approx, a little more then a half moon. After running the engine for 5 min it's closed. Fuel pressure is at 7 bar. I tried an idea, and put a small ziplock bag of ice on the top of the WUR and after 15 min the engine starts right up.I'm stumped! Please help!Thanks!Rob

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