E99 SD Crank No Start, Smokes.
Thread Starter
|
5th Wheeling
Joined: Apr 2022
Posts: 31
Likes: 1
E99 SD Crank No Start, Smokes.
Hey all, as the title states, I have an early 99 F-250 SD with the 7.3. It’s recently had an issue with a crank-no-start. Before this, it would always start, but as the days went on, the cranks got longer, and after sitting a few days, (and declining maybe 20 degrees, down to about 40F), it became a no start.
The truck cranks just fine, new starter, strong batteries, zero blow-by, billows white smoke out the back, new glow plugs (about 4K miles on them) and the GP’s are pulling roughly 120 amps.
After letting the glow plugs run about 40s, I’ll try to crank over the truck. It cranks strong, and you can hear it skip like it’s about to start. There’s clearly fuel getting into the cylinders, but it sometimes mid-crank stops smoking, like it ran out of fuel, but returns to smoking after a second. It acts like there’s bad GP’s, despite pulling significant amps.
Previously to this, I had let the truck sit for a few days, maybe 3 max, and when I started it, it took a bit long to crank and acted like it had air in the lines. I had put a new lift pump in the truck, but had tightened everything afaik. Is it possible that it’s just an issue with air in the fuel lines? I had opened up the fuel bowl and it “popped” kinda like a soda can. Is that normal? A decent amount of fuel bubbled out when spinning the cap back on. Is it possible the truck just has a loose fuel fitting and is introducing air into the system, causing a no start?
Unplugged ICP - no change
Unplugged MAF - no change
Confirmed Good CPS
Normal ICP values
EOP values correct
IPR reads 38% while cranking
EBPS is unplugged, and the EBP tube is unsalvageable, so EBPS is disabled for now.
The truck cranks just fine, new starter, strong batteries, zero blow-by, billows white smoke out the back, new glow plugs (about 4K miles on them) and the GP’s are pulling roughly 120 amps.
After letting the glow plugs run about 40s, I’ll try to crank over the truck. It cranks strong, and you can hear it skip like it’s about to start. There’s clearly fuel getting into the cylinders, but it sometimes mid-crank stops smoking, like it ran out of fuel, but returns to smoking after a second. It acts like there’s bad GP’s, despite pulling significant amps.
Previously to this, I had let the truck sit for a few days, maybe 3 max, and when I started it, it took a bit long to crank and acted like it had air in the lines. I had put a new lift pump in the truck, but had tightened everything afaik. Is it possible that it’s just an issue with air in the fuel lines? I had opened up the fuel bowl and it “popped” kinda like a soda can. Is that normal? A decent amount of fuel bubbled out when spinning the cap back on. Is it possible the truck just has a loose fuel fitting and is introducing air into the system, causing a no start?
Unplugged ICP - no change
Unplugged MAF - no change
Confirmed Good CPS
Normal ICP values
EOP values correct
IPR reads 38% while cranking
EBPS is unplugged, and the EBP tube is unsalvageable, so EBPS is disabled for now.
Thread Starter
|
5th Wheeling
Joined: Apr 2022
Posts: 31
Likes: 1
That’ll make diagnosis a bit easier, then. Rule out the GP’s. Got it. I’m mostly focusing on the fuel system right now. I don’t think it’s a sensor thing just cause the truck ran perfect days earlier without a hiccup, and readings don’t show anything wonky.
Fleet Mechanic
Joined: Nov 2006
Posts: 1,664
Likes: 219
From: Northwest
A bit confused about "air in the lines". Excess fuel is returned to the tank so air should be purged out rather quickly while it is running.
Is the engine oil level up to the full mark ?
Is the block heater working ?
Age of the GP's ?
Bad ICP
Is the engine oil level up to the full mark ?
Is the block heater working ?
Age of the GP's ?
Bad ICP
Thread Starter
|
5th Wheeling
Joined: Apr 2022
Posts: 31
Likes: 1
as far as your questions, glow plugs are about 4k miles, or about 8 months old. Block heater’s cable’s broken, engine oil full, and the ICP has a little oil in the plug, so I’ll be replacing it soon anyways, but unplugging changes nothing, and it reads normal on the scanner.
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
If temps are in the 40's and 50's then glow plugs are necessary to start most 7.3's. You said the system is pulling a lot of amps. Are you measuring the load and if so how many amps is it pulling when first turning the key? Have you tried letting the plugs cycle a few times before cranking? You can watch the voltmeter in the cluster and it will climb when the plugs have finished a cycle. Then just turn the key off and back on again.
FTE Leadership Emeritus
Joined: May 2014
Posts: 27,351
Likes: 5,945
From: Lake Hartwell, GA
Have a look at the following links taken from the 7.3L PSD Tech Folder.
Trending Topics
Tuned
Joined: Jan 2023
Posts: 396
Likes: 171
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
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
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
If it's ran previously that day, yeah you're right they will typically pop right off. Now if they've sat overnight or a few days for sure they need a little help, in my experience and some of the reading I've done here. Just not enough heat to get the party started w/out glow plugs setting the mood.
Thread
Thread Starter
Forum
Replies
Last Post
jmd4993
1999 - 2003 7.3L Power Stroke Diesel
2
Apr 2, 2020 02:53 PM