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Old 11-19-2012, 09:23 PM   #31 (permalink)
turbonator
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If you have unburnt fuel, turning the pump up more, will not fix this. Turning the pump up will not change whether or not the pump is creating enough pressure to pop injectors. The highest pop pressure that we seen is just over 3,000psi. These injector pumps create 10,000 psi, and is a wear issue between plungers and the rotor and the wear between the head and rotor. The common symptoms are erratic pumping (missing) and hard starting when pump is wearing out.

If your timing is still too advanced, you need to retard it a little more. The white smoke when you first start the truck, is improperly burnt fuel. As the truck warms up, this smoke clears. When running on the highway, pump will be advanced due to housing pressure increase due to rpm's (internal charge pump) If pump is too far advanced, the fuel is being injected before the cylinder compression is at optimum to burn the fuel. You could have the scenario very similar to when truck is warming up. Retard the timing a little more, until you have a noticeable stumble when pressing the advance lever on the side of the pump.

Do a couple more runs with it retarded another dimes width and give us news.
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Last edited by turbonator; 11-19-2012 at 09:35 PM.
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Old 11-19-2012, 09:58 PM   #32 (permalink)
boyjeenyus
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Will try to retard the timing a bit and get back to you. Thanks a ton for all your great suggestions, fellas!
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Old 11-19-2012, 10:08 PM   #33 (permalink)
turbonator
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break out your big screw-driver and have at her....
__________________
1992 gmc 3500 drw, rclb..... very, very full of goodies
1986 jetta IDITI, some goodies
1988 swb test truck, for testing
acolytes of the "aggressive buddist's" principles since march 13th 2014
building power, "Sanford and Son style"

under development:
-MEGA-SQUIRTZ H.O. injectors
-big-bore DB-2 pumps (.350",.370")
-supercharger kit
-center mount turbo kit with tubular manifolds....
and much more.....
Jeff & jim....

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Old 11-19-2012, 10:31 PM   #34 (permalink)
boyjeenyus
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obvious/stupid question: which way do I rotate the pump compared to the engine to retard the timing? I've found directions online that mention both ways to advance
Thanks!
stephen
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Old 11-19-2012, 11:38 PM   #35 (permalink)
Bigboytoys
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Quote:
Originally Posted by Bigboytoys View Post
move it 1/2 a lines width to the passenger side to retard it.
.
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Originally Posted by happypunch View Post
it would be nice if it could deflect a deer or a prius...
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Originally Posted by Livelli View Post
Mine ate about 6ft of paper towel once. It idled funny for a minute, then let out one big black firey fart and smoothed right out.
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Old 11-23-2012, 05:45 PM   #36 (permalink)
boyjeenyus
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update:

Sweet! So drove to for 14 hours the other day with a good bit of white. Finally figured out how to get to that 3rd injection pump bolt (just had to remove one of the oil pump brackets so I could turn my wrench). Turned to pump to passenger side about 1/16 of an inch (dimes' width). Drove for 10 minutes after retarding...seems to be much better in terms of white smoke! YAY! It still only slows down when I push the advance arm, so I may try to go farther with it in a few days to see what happens. What will I see if I go to far? I do want it to stumble a bit when I push on that advance arm, right?

Thanks for everything guys!
Stephen
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Old 11-23-2012, 10:17 PM   #37 (permalink)
Bigboytoys
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Retard the timing a little more, until you have a noticeable stumble when pressing the advance lever on the side of the pump.
__________________
1990 Suburban 1500 Silverado 4x4, in the shop is a possible 6.5? Turbo in the wings. Open plenum intake. 700 R4 Now Rebuilt + 241, NV4500+205 sitting in the shop. 10,000lb Trany Cooler With 10in pusher Fan and gauge. 8,000 LB Warn Multi Mount. TCC Lock up Control. 10's front and back, 60 front and 14 bolt rear real soon? 4" Lift and 31 10.50's. Many twisted drive shafts F&R. Manual and auto high idle. Heated Fuel lines. Enough lighting to make day light

Old SOBs member #26

Quote:
Originally Posted by happypunch View Post
it would be nice if it could deflect a deer or a prius...
Quote:
Originally Posted by Livelli View Post
Mine ate about 6ft of paper towel once. It idled funny for a minute, then let out one big black firey fart and smoothed right out.
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