7.3 power stroke
Thread Starter
|
3rd Gear
Joined: Oct 2023
Posts: 3
Likes: 1
7.3 power stroke
Put in new 7.3 blueprinted diesel in my 2001 F250 dually.. New engine,turbo,wiring harness,fuel pump,injectors,clutch, pressure plate, flex plate, bearing.,standard tranny ,starts cold and runs great. after it warms up it is hard to restart. have to use starting fluid to get it running. Any help would be appreciated.
Thread Starter
|
3rd Gear
Joined: Oct 2023
Posts: 3
Likes: 1
[QUOTE=Whitey Ford;21008917]It is extremely bad to use starter fluid. Sounds like an IPR issue getting hot. Try cold water or cold air on it when it won’t restart, see if that makes a difference. Any codes
Thank you for the reply.
no codes, new IPR valve. I will heed your advice on the starting fluid
I was stuck and had to get it started. Lucky for me no problem occurred.
Thank you for the reply.
no codes, new IPR valve. I will heed your advice on the starting fluid
I was stuck and had to get it started. Lucky for me no problem occurred.
FTE-Spread The Knowledge
Joined: Feb 2008
Posts: 2,285
Likes: 240
Yes, a scanner to monitor live data is a good idea. Post your data when cold verses hot, when problem occurs.
If no start when hot and everything else is good, it's usually an IPR, or chaffed wires to the IPR, ICP or chaffed wires to ICP. Do you have good oil in it?
If no start when hot and everything else is good, it's usually an IPR, or chaffed wires to the IPR, ICP or chaffed wires to ICP. Do you have good oil in it?
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
How long has the engine been run since you installed it? Two miles? 200 miles? Need to make sure that the high pressure oil rails are cleared of any leftover air and only driving a ways will do that.
The other thing is, sometimes rebuilt injectors behave as you described. Happened to me. I put a set of rebuilts in and the engine ran worse than before I pulled the originals out. Engine would start and run ok when cold, but as soon as it got warm, then it would misfire and the starting wasn't that characteristic "Powerstroke bark" when the engine would catch. I would have to crank the starter for at least 5 seconds, then you could hear it kind of "taper up" until enough HPOP pressure was built up to be able to drive the injectors. Buying and installing a brand new, NOT REBUILT, set of injectors completely removed any of those symptoms. Now more than ten years later, engine still starts without any delay, regardless of temperature.
The other thing is, sometimes rebuilt injectors behave as you described. Happened to me. I put a set of rebuilts in and the engine ran worse than before I pulled the originals out. Engine would start and run ok when cold, but as soon as it got warm, then it would misfire and the starting wasn't that characteristic "Powerstroke bark" when the engine would catch. I would have to crank the starter for at least 5 seconds, then you could hear it kind of "taper up" until enough HPOP pressure was built up to be able to drive the injectors. Buying and installing a brand new, NOT REBUILT, set of injectors completely removed any of those symptoms. Now more than ten years later, engine still starts without any delay, regardless of temperature.
Trending Topics
Thread Starter
|
3rd Gear
Joined: Oct 2023
Posts: 3
Likes: 1
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
Well, that clears up that question. Next step is to see what Forscan will come up with.
PREMIUM SPONSOR
Joined: Mar 2005
Posts: 1,863
Likes: 19
From: Hoschton,GA
I always recommend and use WD-40 if the vehicle is having a hard time starting. I agree this sounds like an oiling issue so use Forscan to monitor the ICP while cranking and it should go to 1200psi in 2-3 seconds. The injectors need 450psi to fire.
__________________
Jody & Diane Tipton- DP-Tuner®
FTE Legacy Sponsors since 2006
Custom tuning for 7.3l, 6.0l, 6.4l,6.7l, Ecoboost,
Get Tuned! 828-221-0076 ext. 802
Become our Facebook Fan
Jody & Diane Tipton- DP-Tuner®
FTE Legacy Sponsors since 2006
Custom tuning for 7.3l, 6.0l, 6.4l,6.7l, Ecoboost,
Get Tuned! 828-221-0076 ext. 802
Become our Facebook Fan
Logistics Pro
Joined: Mar 2007
Posts: 4,579
Likes: 837
From: knoxville, tn
@DP-Tuner I haven’t seen you post much in awhile. Good to see you and thanks for providing some help to the OP.
who did the work to your truck and how many miles are on it? Is it still under warranty? If so, I would let them look at it before doing to much work.
you didn’t mention a HPOP. Does it have a new one? Are you sure the IPR is motorcraft? If it is not, I would change it. Non OEM parts don’t play well with these trucks.
who did the work to your truck and how many miles are on it? Is it still under warranty? If so, I would let them look at it before doing to much work.
you didn’t mention a HPOP. Does it have a new one? Are you sure the IPR is motorcraft? If it is not, I would change it. Non OEM parts don’t play well with these trucks.
Thread
Thread Starter
Forum
Replies
Last Post
4Kids
1999 - 2003 7.3L Power Stroke Diesel
24
Aug 24, 2023 11:51 AM
captain4bars
1987 - 1996 F150 & Larger F-Series Trucks
1
May 27, 2008 11:46 AM
colwilly
1994.5 - 1997 7.3L Power Stroke Diesel
9
Mar 25, 2005 11:56 AM