12 Valve Engine and Drivetrain Talk about the 12V engine and drivetrain here. This is for 1994-1998.5 engine and drivetrain discussion only.

lazy cummins???

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Old May 4, 2012 | 05:26 AM
  #31  
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im looking to turn the pump up a little bit anyone got a very detailed way of doing so
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Old May 4, 2012 | 02:32 PM
  #32  
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Do a search for "fuelplate", that´ll be a help, or maybe not, if you´re having problems getting fuel now, asking for more won´t help any.

I´m with Gorms on the air in the fuel, and the prefilter was my best guess, but if you don´t have one that can´t be it.

Maybe it´s time for a new fuelhose, from the tank to the liftpump, then you know that´s not bad.

Slev
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Old May 5, 2012 | 05:01 AM
  #33  
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its seemed to come out of it used it last weekend hauled some hay worked fine but i just want a little more power
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Old May 5, 2012 | 05:11 AM
  #34  
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i looked on the p7100 thread and i see part 89 and you just push that in the most forward position? do you need to turn up the boost of advance the timing never done this before just want a good clear explanation of whats going on before i do it thanks in advance
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Old May 5, 2012 | 08:32 AM
  #35  
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Yes, you just push it forward, if it blacks out the mirror you went too far and should move it back some, or put a boost elbow on it to get more turbo pressure.

And so it begins ...

And get gauges, turbo pressure, fuel pressure and EGT, no need to mess it up just because you get "all funny" tweeking that pump LOL.

And be careful, I don´t know what transmission you got, but I know I´ll stay out of my pump untill I get mine fixed, I´m pretty sure I´ll get all carried away once I dig in...and I don´t want it to blow up.
You might wanna do a search for "starwheel" as well.

Slev
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Old May 5, 2012 | 06:32 PM
  #36  
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ok ill try it and get back and as for a transmission i have a 6 speed eaton fuller
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Old May 14, 2012 | 05:01 AM
  #37  
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is there any way of testing injectors??? the truck works ok but not as good as my other truck and at low rpm under 1000 it seems like it has a slight skip but bump the throttle up and it comes out of it any one have any input?
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Old May 14, 2012 | 07:39 AM
  #38  
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Originally Posted by jacob_armour
is there any way of testing injectors??? the truck works ok but not as good as my other truck and at low rpm under 1000 it seems like it has a slight skip but bump the throttle up and it comes out of it any one have any input?
Yep, but you have to pull them, at that point, it is easier to just have them cleaned and the pop set.

Run a tank heavily laced with a good additive like Power Service, probably 3X the recommended strength. That will usually clean them up if it is just some filth.
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Old May 15, 2012 | 05:03 AM
  #39  
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well finally got around to it today and moved the fuel plate forward and i really didnt expect to see any amount of power man was i wrong whole different truck hauls *** might start drag racing at the lights with the 5 ton lol still sounds like a miss at idle but doesnt seem to affect the performance
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Old May 16, 2012 | 01:40 PM
  #40  
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.........Adjust ur rockers/valves, this helps more than u will ever imagine.... .015 intake, .030 exhaust........kim....
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Old May 22, 2012 | 05:06 AM
  #41  
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i got new valve cover gaskets in the back seat of my car im gonna check the clearances when i change them thanks
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Old May 22, 2012 | 08:02 AM
  #42  
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Originally Posted by oldkimmer
.........Adjust ur rockers/valves, this helps more than u will ever imagine.... .015 intake, .030 exhaust........kim....
My 97 calls for .010 (intake) & .020 (exhaust).

To the OP.. What is your idle speed at now?
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Old May 30, 2012 | 05:04 AM
  #43  
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850 ish
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Old Jun 4, 2012 | 10:55 AM
  #44  
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so there are 2 different valve clearances being said anyone know which one is correct??
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Old Jun 4, 2012 | 11:18 AM
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The spec for your engine is printed on a plate that is attached to your engine.

More specifically, it's on the driver's side of the timing gear case/housing. Standing next to the driver's side fender with the hood up, look at the injection pump where it meets the gear case. There will be a data plate there with the correct specs.
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