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Old 04-01-2009, 08:37 PM
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Hesitation/ black smoke

Hey, new diesel truck owner here I have a 2004 F250 6.0 PSD, banks 6 gun, banks monster exhaust, Cold air intake all installed by previous owner. The truck only has 34000 miles and i checked the maintenance records at the ford garage where it was serviced and the previous owner only had it in for water in the fuel, other than regular service and recalls the truck hasn't had any problems. Having said that the problem I'm having is from time to time only when going up hill just as I accelerate the truck seems to hesitate, blow a huge amount of black smoke and I hear a sound like the turbo back blowing through the intake. This only happens when the fuel tank is almost empty, and when going up hill. The 6 gun is normally on 6 when I drive it daily except when I'm towing and then I use it on 4. This happened with it on all settings I moved it around when It was acting up. I haven't had this problem while towing but then again the tank wasn't almost empty. I have no idea what the hell is going on. I add 4oz of Ford PSD cetane booster with every fill up. I usually wait until the tank is empty to get fuel but I'm thinking I should stop that now that I have this problem. I'm hoping one of you diesel gods can E-diagnose this problem.... Thanks!!
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Old 04-02-2009, 01:39 PM
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Intercooler boot blow off?
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Old 04-02-2009, 07:53 PM
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I don't think so. I filled the tank and no problems. I thought that at first but I can put the banks on 6 and tromp on it and no problems at all, so that to me, kind of eliminates any air leaks....
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Old 04-03-2009, 06:23 PM
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Lift Pump?? Gets low and wont pump?? Clueless....
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Old 04-03-2009, 06:25 PM
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Have the computer checked.
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Old 04-06-2009, 06:52 AM
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found a broken Vacuum T at the MAP sensor. I got one yesterday on my way to work and I'll have it in today. Let you know if that was the culprit. BTW I have a Banks 6 gun for sale if anyone is interested.....
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Old 04-10-2009, 07:27 PM
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It was the EGR Valve. They replaced it and charged $580.00. Good for me I purchased an extended warranty........
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