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Old 08-13-2017, 08:07 PM   #1
Jeremy001995
 
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12v no low end power when hot

when the engine is cold it runs perfect and spool nice,no excessive smoke. when warm(5min of driving) truck as no low end power... no power and lot of smoke... but when cold it has power and normal smoke.. .got 70psi of fuel pressure,fuel shutoff is good and adjusted right..
in the last month the truck stalled right on the road.. 2 time.. and started right up..
when hot on a gravel road,in 4th around 1600rpm and i floor it.. no boost until 2000-2100rpm.. and around 40-45 at 2500rpm.. and a lot of smoke..

Tanks!!
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Ram 2500 1994 12v South bend DD Comp clutch,NV4500 Manual Trans /NP271 , 62/74/.80 Silver Bullet PhatShaft,3piece manifold, 5x.014 injector, 191 Dv's,Rack Plug,215 p7100 23* Timing with PDD adjustable timing gear,4K GSK ,AFC Live 220GPH Fass
 
Old 08-13-2017, 08:31 PM   #2
Stox5225
 
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What pump is on it


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1997 Cummins 2500; NV4500HD; SB DD; 315/75R16; 3rd Gen Track Bar; 63/65/14; AFC Live; 7mm DV's; 4 GSK; Mac Rack Plug; Custom Fuel System; 5x.012; Colt Cam Big Stick; 60# Springs; PDD Stage 1 Push Rods; O-Ring Head; Head Studs; Fluidampr; Boost/EGT/FP Gauges
 
Old 08-13-2017, 08:32 PM   #3
95cummins5.9
 
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Sounds like my 175 pump when the barrels and plungers were having a issue.
 
Old 08-13-2017, 08:37 PM   #4
Jeremy001995
 
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Quote:
Originally Posted by Stox5225 View Post
What pump is on it


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180hp ppump from a 1997 auto..fass 220 as lift pump
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Ram 2500 1994 12v South bend DD Comp clutch,NV4500 Manual Trans /NP271 , 62/74/.80 Silver Bullet PhatShaft,3piece manifold, 5x.014 injector, 191 Dv's,Rack Plug,215 p7100 23* Timing with PDD adjustable timing gear,4K GSK ,AFC Live 220GPH Fass
 
Old 08-13-2017, 08:39 PM   #5
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Quote:
Originally Posted by 95cummins5.9 View Post
Sounds like my 175 pump when the barrels and plungers were having a issue.
runs pretty nice, no miss.. when cold has good power and no excessive smoke.. when hot no power until 2500rpm.. and smoke like a train
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Ram 2500 1994 12v South bend DD Comp clutch,NV4500 Manual Trans /NP271 , 62/74/.80 Silver Bullet PhatShaft,3piece manifold, 5x.014 injector, 191 Dv's,Rack Plug,215 p7100 23* Timing with PDD adjustable timing gear,4K GSK ,AFC Live 220GPH Fass
 
Old 08-14-2017, 06:31 AM   #6
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Does your secondary spin freely when hot? Is the wastegate sealing properly?
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95 RCLB 4WD
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Old 08-14-2017, 09:02 AM   #7
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When you get it to operating temp, dump a gallon plus of ice water on the pump and take it for a rip. If it acts normal, then you barrels in the pump are warped.


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Old 08-14-2017, 05:01 PM   #8
Jeremy001995
 
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looks like the secondary is not doing his job..wastegate actuator is good and ajusted right..the wastegate look closed, when i have remove the actuator the shaft is free,not jammed. will remove the wastegate cover tonight to see if someting is broke...
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Ram 2500 1994 12v South bend DD Comp clutch,NV4500 Manual Trans /NP271 , 62/74/.80 Silver Bullet PhatShaft,3piece manifold, 5x.014 injector, 191 Dv's,Rack Plug,215 p7100 23* Timing with PDD adjustable timing gear,4K GSK ,AFC Live 220GPH Fass
 
Old 08-14-2017, 09:11 PM   #9
Jeremy001995
 
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just fixed it,, i removed the cover on the wastegate housing, the 2 puck was not sealing proprely, had to shortened the actuator rod and put some tention on the puck to keep them closed when not needed..truck is really fun to drive now.. but same issue as my 475..no more than 53lbs of boost.. nevermind lol
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Ram 2500 1994 12v South bend DD Comp clutch,NV4500 Manual Trans /NP271 , 62/74/.80 Silver Bullet PhatShaft,3piece manifold, 5x.014 injector, 191 Dv's,Rack Plug,215 p7100 23* Timing with PDD adjustable timing gear,4K GSK ,AFC Live 220GPH Fass
 
Old 08-15-2017, 05:41 AM   #10
Drothgeb
 
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If I were you, I'd swap out the diaphragm actuator for a spring-gate. The diaphragm works good for a single, but I've had better results with a spring-gate on compounds. Not sure it will correct your 53psi of boost, but it may.
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I'm not a Cummins expert, but I did sleep at Holiday Inn Express
 
Old 09-12-2017, 11:18 PM   #11
Jeremy001995
 
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running strong at 80-85lbs of boost now! since the beginning..just a crappy Maxtow(glow shift) boost gage..it was a 0-60psi.. but never passed 53psi.. what a crap..
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