92 mods - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 5 (permalink) Old 11-17-2009, 05:26 AM Thread Starter
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92 mods

ok my buddy has 100hp injectors, m5 fuel pin, gov spring, and a little tuning i havnt drove it yet but he said compared to his buddys truck it doesnt feel like it has that much power. what can i do as far as tuning to get this thing dialed in?

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post #2 of 5 (permalink) Old 11-17-2009, 02:34 PM
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Do a fuel pressure test.

What you have listed could be more than a stock high milage lift pump can handle.

93 W350 w/duals, fuel pin turned, 6X.018" injectors, 4" exhaust, 3" air intake horn, HX40/16, G56 /SBC Con-OFE, 307's axles' 2" skyjacker lift, B&W flatbed
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post #3 of 5 (permalink) Old 11-17-2009, 02:59 PM Thread Starter
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how do you do a fuel pressure test on these pumps?

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post #4 of 5 (permalink) Old 11-18-2009, 02:37 AM
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You need to get a taped banjo bolt. Pull the banjo bolt on the oulet side of the fuel filter. Install the taped banjo bolt and then install a gage.

On a stock lift pump you should see 5 to 7 PSI at idle. If your showing any less than 5 PSI. Throw a new fuel filter on it and see what it does.

Do a test drive and see what the PSI is at WOT.

Postback and let us know what it reads.

93 W350 w/duals, fuel pin turned, 6X.018" injectors, 4" exhaust, 3" air intake horn, HX40/16, G56 /SBC Con-OFE, 307's axles' 2" skyjacker lift, B&W flatbed
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post #5 of 5 (permalink) Old 11-18-2009, 05:11 AM Thread Starter
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ok ill see when he can get it done i work a lot and dont even have enough time for my truck so ill let him know what to do and get back to you thanks for everything

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