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fuel problems?

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Old Aug 4, 2006 | 02:29 PM
  #1  
makita70's Avatar
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From: central california
fuel problems?

my 2000 2500 without warning stalled. cranks fine but no start. no codes so i replaced filter and bled at banjo. also cracked injectors loose on2,3 and 4. fuel leaks at injectors but still won`t start. truck has 186,000. tp seems fine,could it be injector pump? truck was near empty on fuel
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Old Aug 5, 2006 | 07:01 AM
  #2  
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From: Tenn.
You might check to see if your fuel filter housing is at least 3/4 full of fuel. If it's not, fill it about 3/4 full with clean fuel since the fuel filter in the top will displace some. Bump the starter but don't start the engine to get a free 25 second run on your lift pump and do it 4 times to get rid of as much air out of the system without cranking and cranking the engine. You should hear the lift pump whine.
When you cracked open the injector lines, did there seem to be alot of pressure?
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Old Aug 5, 2006 | 10:34 PM
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From: central california
i refilled filter canister and primed 4 times. still would not start so i bleed injectors and it started! appeared to have air but i`m unsure if it got there from low pressure, from rounding a corner with 1/8 tank or from replacing filter after it first stalled. would you recomend fuel pressure gauge?
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Old Aug 6, 2006 | 06:54 AM
  #4  
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From: Tenn.
Alllllright, you got it going again, now standby for the New Guy Info

Welcome to the site ,
Your Dodge/Cummins has fuel milage and power capabilities far beyond a basic gasser but it isn't gas-n-go like a gasser either...it's a bit involved but not difficult to manage.
Obtain a repair manual at your favorite auto parts store so you can get up quick on your truck. You also need gauges to get info from your truck but more on that later..
Your 24 valver has a Lift Pump that takes fuel from the fuel tank and delivers it to your Injector Pump(VP44). This VP44 is the weak link and because it's so expensive, it deserves extra consideration. For years the guys here have been trying different things to get the VP44 to live and through basic R&D, they've discovered a few things that help most and are running up the miles.
Fuel lubes and cools the VP44 and we watch that with the Lift Pump fuel pressure. We generally like to see 13-15psi idle, 12-13psi cruising hwy speed and no less the 5-7 psi at wide open throttle(WOT).
A fuel pressure test gauge available at your favorite auto parts store, connected by pressure lines to the Schrader Valve on your injector pump and installed in the cab will get you lift pump fuel pressure to watch. Check my picture gallery.
Diesel fuel has very little if any lubricating abilities so fuel treatments like Power Service, Howes, Lucas and Stanadyne add lubrication to the fuel. I use the MFG's recommend on dosages.
There is fuel returned to the fuel tank from the fuel system and because some of it comes from a passage in the cylinder head of the motor, it's hot. This is fine in the winter because diesel fuel can gel in very cold temperatures BUT in the summer, it can get hot enough that it won't cool electrical components in the VP44.

Most folks are keeping their fuel tank 1/2 full or better.

We're currently looking for an end all fuel cooler that does not restrict flow or pressure.
Many folks have found that they had no lift pump pressure after they install a gauge or change the fuel filter so be ready for that.
Type "lift pump" in the search box for lots of info.
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Old Aug 6, 2006 | 01:51 PM
  #5  
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From: central california
thanks for the help and info. this site definitely helps getting up to speed easier! will check out the pics and plan ahead.
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Old Aug 12, 2006 | 08:14 PM
  #6  
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From: Alaska
Had a similar problem. Turned out to be the water in separator valve was bad. No diesel smell and gas mileage was same, but it was letting air into the injectors. Spend $25.00 and 5 minutes and now I am back to business.
Hope it helps!
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