Ford F-250 & Ford F-350 The heavier duty full sized trucks from Ford, offering bigger, more powerful engines and drivetrains for the abuse they may go through in the workplace.

Help!!7.3 won't start

Thread Tools
 
Search this Thread
 
  #1  
Old 06-12-2011, 08:05 AM
j1586's Avatar
Junior Member
Thread Starter
Join Date: Jun 2011
Posts: 2
Default Help!!7.3 won't start

I have a 2002 f350 that I am chasing a problem. new icp, new ipr, new HPOP,New fuel pump with prefilter, fresh batts and fuel in the bowl and no start.

ran AE scan tool before HPOP replaced.
1. Injector buzz test passed with no problems.
2. When we tried to run the cylinder contribution test, the engine died as soon as the first injector was dropped out by the test - I don't think it related to that injector.the RPM dropped too much. We repeated the test and the same thing happened again.
3. I have a DP tuner, and the engine would only stay running if the tuner was on the high idle program. If you took it back to stock, the engine died immediately.

The IPR Duty Cycle is at about 14% with the engine off, jumps up to about 65% while cranking, and then came back down to about 14% once the engine is running. ICP was around 650-700 psig.

I have replaced the fuel filter, injector cups & o-rings.

Before hpop replacement it would start with small amount of starting fluid but will not stay running at low speed/idle. after the replacement i finally got it started and it even would idle down. it died while idling and hasn't started since.

I am in Ct and have to be in TX in 2 weeks! any help would be appreciated.
 
  #2  
Old 06-12-2011, 08:25 AM
j1586's Avatar
Junior Member
Thread Starter
Join Date: Jun 2011
Posts: 2
Default

CPS replaced earlier and even swaped it for a spare-no change

oil changed prior to hpop replacement
HPOP replaced on monday. truck has been cycled 20-30 times since. even ran for a 2-3 min period before dying.

no oil in fuel bowl

I don't have a scanner here. Greg in Ledyard hooked it up when my truck was running poorly but still runnning.

truck will not start at this point even on ether
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
berbaby
Ford Explorer
2
01-10-2007 05:19 PM
whos_the_master
Ford Expedition
2
08-16-2006 06:05 PM
birdeeshot
Ford Explorer
1
01-20-2006 12:28 AM
birdeeshot
Ford Ranger
0
01-20-2006 12:28 AM
birdeeshot
Ford Forum Help & Suggestion Center
0
01-20-2006 12:28 AM



Quick Reply: Help!!7.3 won't start



All times are GMT -5. The time now is 09:55 PM.