Smoke Adjustment Screw

[Cummnzpowr]

Hey guys:
How much should i turn my smoke adjust screw up to make lotsa smoke, yet not harm the pump itself? and which direction is more smoke?--{note:i don't care about getting flipped off either}. .

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Greg's 1993 D250 4x2. . 5-speed. . extended cab. . longbed. . bright white. . tinted windows. . 4-inch pipe no muffler. . K&N air filter. . holes in air box. . 140,000 miles. Tweaked pump. PW injectors. {thanks Piers}. "The Phantom"

 

[BushWakr - RIP]

Hi there Cumminzpowr,

The smoke adjustment screw (if i understand your question right) is under the little round cap cover on top of the pump diaghram. If you turn that torqz (sp?) screw clockwise it will increase your snap throttle fuel and smoke. I've heard it referred to as 'the first 30 feet of launch adjustment' too. In my case I have found that as little as a 1/3 turn starts to make a difference. You'll have to note its orig. position and go from there. I found also that the star wheel adjustment is pretty touchy when it comes to making smoke provided the afc diaghram is adjusted up in conjunction. Piers can probly give you a rocket science answer better than mine. BTW why do you want to make lottsa smoke? My experience here has taught me that the pump is something to be respected and needs to be adjusted with care and purpose. Just curious is all. Piers, correct me if i'm wrong please and maybe comment on the resulting carboning up of components perhaps.

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93. 5 D250 4X4,HD Spring Pkg, Rancho 7000's, Rear Swaybar,Dual Shock Front Stabilizer,BD Injectors,31/2" Mandrel bent exhaust,16cm 'Hot End',Modest Pump Tweaks/Timed,K&N Air,Isspro Pyro,Tach,transmission Temp,Auto Meter Oil Filled Boost Ga. , 3:54's, 4 Speed Auto, Clubcab, Aftermarket Reclining Buckets w/ctr Drop Down seat/console, Black over Silver, 21psi,285-65R-16's,American Racing Clear Coat Mags, Amsoil 15W-40HD Marine,12,000 lb. Warn Winch,KC Spots. 97,000 Kms.

 

[d90boy]

So on the AFC cap you just pry it off or do you take the screws out. I assume you turn it the same way on all the VE pumps, clockwise for more fuel with less boost. I have a friend with a VE pump on another truck and it needs the proper adjustment. What's the best way to get the metal band off of the power screw?

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2001 3500 QC 4X4 black sport, ETH & everything else except 4. 10s Properly valved, improperly pumped.

 

[Wirenut]

Right, clockwise is more, counterclockwise is less on all the adjustments on the VE (I'm pretty sure) The best way to get that metal colar off the power screw is to take the screw the whole way out and put it in a vise. Make sure to not loose your original position though!

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• '93 250 LE 4x4 5spd 4:10 Loaded,dual 5" chrome stacks,12cm² turbo(37psi),PW injectors,K&N,pyro/boost,US Gear E-Brake,tool box,CB,10" AR rims, 285/75/16 Bf goodrich. "wirenut_21529" on Yahoo Messenger
• '97 Ford B-Series school bus (5. 9 Cummins!)I'm gonna Bomb it!
• '94 GMC 2500 6. 5L Turbo

PICTURES.

 

[d90boy]

Well that sounds easy enough, I'd just always been afraid of taking it all the way out. Is it the consensus that the cone shaped thing under the diaphram should be adjusted before messing with the power screw?

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2001 3500 QC 4X4 black sport, ETH & everything else except 4. 10s Properly valved, improperly pumped.

 

[AlK]

You may find the following thread of some help.
https://www.turbodieselregister.com/ubb//Forum2/HTML/000852.html
---
Al

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92-LE,4x4,5spd,3. 54,Borgeson steering shaft, Tach,Isspro Pyro & Boost, 16cm2, PW injectors