97 PSD Low Power
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Joined: Oct 2001
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From: TX
97 PSD Low Power
On friday I took my friends truck and camper to the race track for him and his truck is one dead dog. I said something to him and he said that it has been loosing power and hasn't been runing very good. Air filter, fuel filter are all new. There is NO smoke with stock program in PCM. With the stock program in you can't hardly hear the turbo spool up. When I used my tuner on his truck you can hear the turbo a little but not much and the truck blows alot of black smoke when you get on it hard. I feel that the turbo isn't working as well as it should be but not realy sure. I hear no bearing noise from the turbo and can hear it spining if I put a screw drive on it. Any sugestions would be great. Also the truck only has 100K on it and the motor is in great shape uses no oil or any of that so I feel it is fuel/air problem.
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Joined: Feb 2001
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From: Indianapolis
97 PSD Low Power
[updated:LAST EDITED ON 02-Apr-02 AT 12:53 PM (EST)]Engines manufactured prior to 2000 (I'll check the anthology tonight to make sure that information is correct) used injectors in which the first 3 digits of the part number/serial number on the injector was 187 (except for California). These 187 injectors had a tendency to gall the barrel and sleeve. Our people knew about it but it took them longer to do something about it than expected. The California engines used what we called a "split shot" injector (803) and for reasons unkown to me these injectors never had this problem (as far as I know). In 2000 we started using an injector with a teflon coated barrel and sleve (551) and the problem went away. From what you describe, it sounds to me like that could be the problem and if it is, he's looking at a major outlay of cash unless he can find some way of getting Ford/Navistar to pay a warranty claim on it.
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Joined: Feb 2001
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From: Indianapolis
97 PSD Low Power
Let me start by correcting my previous post. The upgraded injectors began with the 99.5 model year beginning with engine serial number 0896812 which was built in December of 1998. The coating is not teflon as previously stated but tungsten carbide and was implemented to "lessen the chance of injector damage caused by low lubricity fuel and water." That quote came from the 99.5 Engine Update brochure. If you wanted to upgrade the injectors to the new style 551's (a very expensive proposition) you'd also have to install an upgraded high pressure pump because the 551 injectors require more oil to operate and the high pressure pump's displacement was increased from 6.8cc per revolution to 7.2cc per revolution. I don't know what it would cost but I think I'm safe in saying it would be cost prohibitive.
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AndeyHall
6.0L Power Stroke Diesel
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Oct 14, 2010 06:43 PM
