Ford 83-94 6.9 and 7.3L General Discussion of 83-94 6.9 and 7.3 Liter Ford Diesels

94 7.3 IDI SURGING

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  #11  
Old 05-25-2014, 11:05 PM
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Install an electric pump .. Holley 12-801-1 Holley Electric Fuel Pumps - Free Shipping on All Orders @ JEGS

I think your getting ok pressure, but volume is another issue all together .. i have mine set @ 10 psi on the filter housing .. it runs awesome ... till i needed the HG's done 9 and the oil cooler leaking Coolant) ...

FYI - Dont go past 10-12 psi into the IP , you will blow it....
 
  #12  
Old 05-27-2014, 10:58 AM
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OK SO I DROVE THE TRUCK ABOUT 300 MILES YESTERDAY WITHOUT A HICUP
NOW I DROVE IT 32 MILES THIS MORNIN TO PT AND IT DIED 1/2 TANK STARTED BACK UP. DROVE IT HOME AFTER CRANKING ON IT FOR A BOUT 5 MINS AND ALL THE WAY HOME IT WOULD SURGE, GAIN A TON OF POWER THEN DROP BACK TO NORMAL GOING THROUGH TOWN AT 25 IT KEPT WANTING TO DIE COASTED INTO MY DRIVE WAY WOULD NOT START ,
I TOOK SENDING UNIT OUT OF TANK PLENTY OF FUEL HOOKED BACK UP STARTED UP MADE IT ABOUT 200 FT THEN DIED CRANKED FOR ABOUT 30 SECONDS STARTED UP FLOORED IT IN REVERSE BACK BY THE GARAGE.

WHAT THE HECK IS GOING ON RAN THROUGH 25 GALLONS OF FUEL NO ISSUE. PUT 20 BUCKS IN THIS MORNING AND RUNS LIKE THIS EVEN DRIED 911 AFTER I GOT OUT OF PT TO GET RID OF ANY WATER.

REPLACED IP AND RETURN LINES NO FUEL IN VALLEY PAN REPLACED 2 LEAKING PRESSURE LINES TO INJECTORS. FUEL LINES ARE GOOD GOING TO LIFT PUMP FROM TANKS IT DOES IT ON EITHER TANK BY THE WAY. I AM READY TO SELL THIS DANG TRUCK. I PICKED IT UP ON TRADE HE NEVER REALLY HAD ANY PROBLEMS WITH IT WHEN HE DID HAD IT FIXED ,AND GAVE ME ANY RECEIPTS THAT MAJOR WORK WAS DONE ON( INCL- LIFT PUMP LAST YEAR, GP'S, THE RELAY FOR GP'S AND NEW WIRING HARNESS WHEN HE FIRST GOT IT, AND NEW/ USED REAR AXLE. PLUS REGULAR OIL CHANGES AND YEARLY ANTIFREEZE CHECKS FOR CAVITATION ISSUE. REALLY TOOK CARE OF IT. WTF
 
  #13  
Old 05-27-2014, 12:02 PM
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WAS THE FILTER SYSTEM IN THE TANK US SAID NOT TURBO DOES THAT MEAN NOT FOR A TURBO MOTOR MINE IS AND ALSO WHAT FUEL PUMP WILL WORK FOR A TURBO MOTOR
 
  #14  
Old 05-27-2014, 01:00 PM
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Relatively any pump will work for the turbo motor, and what do you mean about the filter system?
 
  #15  
Old 05-27-2014, 01:03 PM
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Start the truck, then slightly open the injector lines at the top of the injectors until fuel sprays out and close them off, sounds like you have air somewhere.
 
  #16  
Old 05-27-2014, 01:19 PM
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Originally Posted by Dortiz
Relatively any pump will work for the turbo motor, and what do you mean about the filter system?
4X4manonbroke AND I WERE DISCUSSING A FILTER FOR THE HOSE IN THE TANK SO NOT TO PICKUP GARBAGE IN THERE WHEN REPLACING FACTORY PICKUP

Originally Posted by Dortiz
Start the truck, then slightly open the injector lines at the top of the injectors until fuel sprays out and close them off, sounds like you have air somewhere.
I HAVE DONE THIS IT RAN FINE FOR 300 MILES YESTERDAY PARKED IT AT HOME LAST NIGHT AFTER WE GOT BACK LET IT RUN FOR ABOUT 5 MINS FOR TURBO COOL DOWN AND SHUT IT OFF DROVE IT THIS MORNING AND IT ACTED UP WHEN I GOT INTO TOWN AND ALL THE WAY BACK I HAVE VERIFIED I HAVE 1/2 TANK OF FUEL BY PULLING THE SENDING UNIT. SO WERE WOULD THE AIR BE NOW, ALSO SPRAYED WITH STARTING FLUID ALL OVER THE LINES (MAIN AND RETURN) AND THE LIFT PUMP AND MOTOR NEVER REVED UP SO NO LEADS THERE. ALSO THIS IS A NEW/REBUILT PUMP JUST INSTALLED COUPLE DAYS AGO.
 
  #17  
Old 05-27-2014, 01:20 PM
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ALSO I WILL GO DO THIS AGAIN JUST TO DOUBLE CHECK MYSELF YOU NEVER KNOW
 
  #18  
Old 05-27-2014, 02:08 PM
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Have you replaced the return line fittings and the injector orings recently? They usually become brittle and this is where a lot air seeps into the system and will cause it to surge
 
  #19  
Old 05-27-2014, 04:46 PM
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Originally Posted by Dortiz
Have you replaced the return line fittings and the injector orings recently? They usually become brittle and this is where a lot air seeps into the system and will cause it to surge
Originally Posted by cantcme
I WENT THROUGH THE O-RINGS AGAIN AND REPLACED JUST THE O-RINGS WITH SOME GREESE ON THEM. SINCE ALL OTHER THINGS (CAPS AND HOSES) WERE NEW. I ALSO INSTALLED A BOOST GAUGE WHILE I WAS AT IT, JUST UNDID PLUG ON TOP OF INTAKE HORN AND INSTALLED THE LINE THERE. THE MAIN LINE TO THE IP WAS A LITTLE LOOSE SO I SNUGGED IT UP. I HAVE 1/4 TANK IN THE TRUCK AND IT RAN FINE BEFORE THIS PROCESS AND NOW IT STARTS RIGHT UP THEN I GIVE HER A LITTLE THROTTLE AND IT REVS TO 2000 HOLDS FOR ABOUT 2 SECS THEN ALMOST DIES THEN BACK TO NORMAL IDLE. I BLED THE INJECTOR LINES ALSO AND FUEL FILTER ONLY HAS 1000 MILES ON IT. ANY IDEAS ON THIS I HAVE A REBUILT IP ON HAND BUT WAITING TO INSTALL IT TILL I NEED TO. (MAYBE NOW IS THE TIME HUH?) THANKS,
OK NOW I HAVE SWITCHED OUT TO MY OLD IP PUMP BLED LINES BLAH BLAH, AND IT IS BACK TO IDLING FINE BUT I GIVE IT ABOUT 1000 RPM AND SHOOTS UP TO 2000RPM AND ALMOST DIES CATCHES ITSELF AND BACK TO NORMAL IDLE.

SO I PUT REBUILT PUMP BACK IN (GETTIN GOOD AT THIS TAKES ABOUT 2 HRS START TO FINISH) AND IT RUNS GOOD SURGES UP AND DIES TAKES FOREVER TO START AND THEN GOOD... SURGES AND DIES..... SO ON AND SO ON. THIS IS THE ONE I HAD IN YESTERDAY AND IT WAS FINE UNTIL THIS MORNIN, I AM AT A LOSS HERE. ARE BOTH THESE BAD? CAN I MAKE ONE GOOD ONE OUT OF THE 2? WOULD THE INFO OFF THE PUMPS BE ANY HELP?
ALL I CAN DO NOW IS SIT AND WAIT FOR SOMETHING ELSE TO TRY. THANKS
 
  #20  
Old 05-27-2014, 04:48 PM
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ALSO I REPLACED THE FUEL FILTER AGAIN WHEN I SWAPPED THE IP'S YESTERDAY
 


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