7.3 93 diesel motor knocking,test injectors? - Ford Powerstroke Diesel Forum
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Old 07-06-2008, 10:08 AM
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7.3 93 diesel motor knocking,test injectors?

i am fairly new to diesels and am looking at buying a 93 f350 turbo diesel.the motor is knocking but it doesent sound like a bearing.alomost like a rock crushing sound.i believe these are mechanical injected motors?i have a mercedes 300d with mech injecection and know that you can swap injectors or tighten or loosen to figure out if its an injector problem.i am just wondering if that can be done on a 7.3 93
manual f350.or perhaps someone can recommend some other solutions.the motor has 190+k miles on it.

thanks for any help given!
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Old 07-06-2008, 10:11 AM
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sure its just not the knocking that the old 7.3 make? and at a 190xxx miles. that things barly broke in. buddy had one that was a little over 400xxx. they will run for ever
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Old 07-06-2008, 04:39 PM
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my neighbor has a 7.3 and the f350 i am looking at doesnt sound quite the same.can anyone point me in the direction to get some insight on the type of feul injection this motor has?manual or website?i think it has mechanical but i am unsure.what are some common probs with this motor?

thanks
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Old 07-06-2008, 04:45 PM
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it is all mechanical , low fuel pressure feeds injection pump which feeds all mechanical injectors , ive seen alot of miles on thse engines , but the ones with the turbos do seem to give some piston problems from what ive seen, the last few ive had in the shop , with engine noises have been piston skirts cracked , and rod bearings bad , not syaing thats what is wrong with that one , noway to know without hearing it , but thats what ive seen lately ,and its been more of the factory turbo engines , why i dont know , more pressure i guess
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Old 07-07-2008, 04:33 AM
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well the price is pretty low about a grand for it.i guess i could get that out of it if the internal parts are damaged.is there a way i can do a compression check?i have a device for gas engines.DO YOU SEE A LOT OF DAMAGED INTERNALS with a standard/manual transmission?i would think a 5sp would mean less heat and load on a engine over its life and perhaps maybe it could just be the exhaust header is leaking around flange?is that common

thanks!
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