turning up the fuel... - Ford Powerstroke Diesel Forum
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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post #1 of 22 Old 02-04-2009, 03:46 PM Thread Starter
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turning up the fuel...

How do you turn up the fuel pump to get some black smoke? I dont know which screw to turn or whatever it is, any help is appreciated.

Thanks
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post #2 of 22 Old 02-04-2009, 03:52 PM
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I dont think you can do that with a powerstroke.

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post #3 of 22 Old 02-04-2009, 03:54 PM
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Sorry man, thats a cummins thing. Look in the mod section for some quick, easy and above all cheap ways to make it go good. (And smoke a little)
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post #4 of 22 Old 02-04-2009, 04:32 PM Thread Starter
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Sorry man, thats a cummins thing. Look in the mod section for some quick, easy and above all cheap ways to make it go good. (And smoke a little)
bummer, thanks though
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post #5 of 22 Old 02-05-2009, 08:12 PM
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What year truck? 87-94 Came with IDI's (94 was a year you could get 3 diff. engines. though.)

If its a 7.3 IDI, then its rather simple. First thing, is you need a pyro. Turning up the pump will melt your pistons if you dont know whats going on EGT-wise. Look at the IP, there will be a black triangular cover on the back passenger side of it. Under the throttle lever. Take two of the bolts out, and loosen the other so it can swing out of the way. Get yourself a GOOD 5-32" brand new allen wrench, you DO NOT want anything falling in that IP, really tight tolerances. Rotate the engine by hand until you see an allen screw in there. Turn it up a little bit. We measure it by "flatts", which are one side of the allen wrench. Start with 1 flat, then move yourself up if your EGT's arent to crazy.

But if its a powerstroke, then you cant do that.
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post #6 of 22 Old 02-05-2009, 08:33 PM
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He posted this in the IDI forums, so I'm betting that's what he's got. NOT a powerstroke.

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post #7 of 22 Old 02-09-2009, 10:36 AM
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Which way do you turn the screw?
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post #8 of 22 Old 02-09-2009, 04:38 PM
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You turn it clockwise, sorry I should have put that in there .
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post #9 of 22 Old 02-09-2009, 06:58 PM Thread Starter
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You turn it clockwise, sorry I should have put that in there .
thanks alot, yepp its a 93 7.3l idi
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post #10 of 22 Old 02-09-2009, 07:32 PM
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I ran my IDI pump as far as it would go and never....hauling 10000 pounds of hay in my enclosed trailer....i couldnt get the EGT's above 1200 with a stock downtube, and 4 inch to 5 inch stacks from there.....no intake either....just a stocker.....and it still didnt roal much coal....there are 2 diff set screws on IDI's....the one you talked about behind the triangular plate gives ya more power, the other is just for smoke lol.....have fun
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