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I had a cold start problem. In warm weather it took a few crank to start, at wintertime got even harder. I thought maybe the ECU doesn't get proper temperature from air, coolant fuel. Everything was ok. I decided to change the fuel pump since I have a newer one. The problem stayed and now it is even worst.
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Some update. I decided to put back the original fuel pump. Halfway through I noticed the vacuum hose was off on the side of the engine (which operates the egr and the vsv). Could have try to start the engine with installed hose but I changed the pump first. Now the engine starts with no problem, except the
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