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| 7.3L IDI (Non-Powerstroke) Diesels Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines. |
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helppppppppppppp
hi guys i have a 92 7.3 idi i noticed it was starting to act up after i changed my fuel filter while reving it to purge air. wheather it did it before hand i dont know.when sitting in neutral or park if i rev it over 2200 or 2300 it starts to miss and smoke blue the higher i rev it the more it smokes and misses. i changed the cdr valve cause the intake was all oily. checked fuel pressure before and after filter housing both were 4 1/4 psi so i replaced lift pump and it still does it ....seems to be getting worse. i havent checked injectors yet and and far as i can tell ip seems ok it drives fine and up to 2000 it doesnt miss. the only engine mods are k&n filter pump pressure turned up and no cat or muffler......please help any ideads????????????? it drive me crazy thanks
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what color smoke?
Does it sound like rod nock when the engine misses. Should try to get all your injectors pop tested. Last edited by '94IDITurbo7.3L; 06-28-2011 at 05:06 PM. |
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it smokes blue
no it doesnt sound like a rod knock or fuel knock and i geuss i outta pull the injectors but i was avoiding that being as it smoke blue(oil) and runs fine up to 2200 i was wondering if this was a sign of the ip going maybe thoughts Quote:
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Blue smoke is also fuel.
Could possibly be the injection pump. I understand you don't want to take things apart that you don't have to but taking injectors out are not really a big deal. |
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i know taking the injectors out isnt a big deal i thought maybe if someone actually KNOWS what they are talking about it could save me a lot of work
quick lesson ![]() black = fuel blue = oil white = water '94IDITurbo7.3L=useless no info is better than bad info |
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I sent you a private message.
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Quote:
Ok, so lets play the questions game since you didn't give that much GOOD info. 1: How many miles are on the engine? 2: Are the Injectors and IP original, best way to tell if the injectors are original is if they still have gray paint on them. 3: Are the return lines original? 4: Do you run any fuel treatment, yes believe it or not using fuel treatments to help clean out your fuel system makes your truck run better. And my last and final question is......What do bus windows taste like? 92idi = ![]() Also... Black = Too much fuel. Blue = bad IP White = Coolant OR! bad injectors. |
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Quote:
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quick lesson ![]() black = fuel blue = oil white = water For a gasser yes Diesel is Fuel Oil Quote:
Last edited by h2odrx; 07-01-2011 at 12:23 PM. |
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Why the hell would you take the time to make a thread asking a ?. Then you turn around and piss on anyone that has tried to help you. If you were so DAMN smart with this stuff you wouldnt be on here asking for help now would you. 92idi your an idiot. You should sell your truck and buy a prius.
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