Starting problems...
Thread Starter
|
Posting Guru
Joined: Jan 2010
Posts: 1,665
Likes: 4
From: Terre Haute, IN
Starting problems...
Here you go Joe. Finally got time to ask...
My truck will not start cold without ether. I'll do a 15 sec burn on the glow plugs and while cranking I can feel it try to start but it won't take off. It does 3 surges like it's trying to start but it won't. When it's warm (at or near operating temp) it fires right off. It also blows white to light gray smoke nearly all the time. very little at idle, increasing with rpms and load. Also feel like its lacking power. I've got 8 new injectors in and all 8 glow plugs work.
Joe suggested low compression causing it to not start cold. Could it be a worn IP? What do y'all think?
Some of this probably isn't real clear, so ask away if i can help you understand.
Thanks for the help!
My truck will not start cold without ether. I'll do a 15 sec burn on the glow plugs and while cranking I can feel it try to start but it won't take off. It does 3 surges like it's trying to start but it won't. When it's warm (at or near operating temp) it fires right off. It also blows white to light gray smoke nearly all the time. very little at idle, increasing with rpms and load. Also feel like its lacking power. I've got 8 new injectors in and all 8 glow plugs work.
Joe suggested low compression causing it to not start cold. Could it be a worn IP? What do y'all think?
Some of this probably isn't real clear, so ask away if i can help you understand.
Thanks for the help!
Post Fiend
Joined: Oct 2007
Posts: 10,501
Likes: 5
From: Faibanks Ak.
What brand glow plugs are you using, Compression can and will cause a hard start, no start condition, but is easy enough to check and be sure.
9 out of 10 times one requires either to start, either the glow plugs aren't working, cranking speed is not high enough or you have air intrusion.
On the smoking have you checked the timing, did you use new or rebuilt injectors.
9 out of 10 times one requires either to start, either the glow plugs aren't working, cranking speed is not high enough or you have air intrusion.
On the smoking have you checked the timing, did you use new or rebuilt injectors.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
Have you looked at the chassis to engine harness connector?
Close to the dip stick you should see the connector.
Look at the end with two large AWG orange wires with white or green stripe.
If the connector looks like it has been hot on that end, your glow plugs are getting little or no power.
The fix, cut both orange wires off close to the connector on both sides and splice them together.
Close to the dip stick you should see the connector.
Look at the end with two large AWG orange wires with white or green stripe.
If the connector looks like it has been hot on that end, your glow plugs are getting little or no power.
The fix, cut both orange wires off close to the connector on both sides and splice them together.
Thread Starter
|
Posting Guru
Joined: Jan 2010
Posts: 1,665
Likes: 4
From: Terre Haute, IN
Star, I don't know about the glow plugs. I've replaced 2, one was a champion and one was a motorcraft. I replaced them both with ZD9s. The injectors are Borg-Warner remans. I have a compression tester and I'll get it tested as soon as i get time, maybe tomorrow evening. I'm reasonable sure there is no air intrusion, and i can't tell one way or another on cranking speed. It sounds pretty fast, but i'm not going to take that to mean anything.
Dave, that connector has been bypassed already. The power runs through a solenoid, then through a single (probably) 10ga wire to the factory harness. The wire hasn't melted or anything, but are you thinking it's not getting enough amperage through? All i can say is that they are getting 12V, I don't know about the amperage getting though...
Dave, that connector has been bypassed already. The power runs through a solenoid, then through a single (probably) 10ga wire to the factory harness. The wire hasn't melted or anything, but are you thinking it's not getting enough amperage through? All i can say is that they are getting 12V, I don't know about the amperage getting though...
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
The stock harness should have two 10 AWG wires from the relay to the engine.
One for each cylinder bank.
I think I would double up on the 10 gauge from the relay to the engine harness and see if that helps.
While you are there, check all the wire connections from the battery to the relay.
At just shy of 200 amps, a little corrosion (AKA resistance) drops the current flow rather fast.
One for each cylinder bank.
I think I would double up on the 10 gauge from the relay to the engine harness and see if that helps.
While you are there, check all the wire connections from the battery to the relay.
At just shy of 200 amps, a little corrosion (AKA resistance) drops the current flow rather fast.
Thread Starter
|
Posting Guru
Joined: Jan 2010
Posts: 1,665
Likes: 4
From: Terre Haute, IN
Update:
I tripled the wire from the battery to the gp solenoid and doubled it from there to the harness and no change.
Also, I tried to check the compression but the damn tester i bought has an incorrectly designed adapter...won't fit.
I tried advancing the timing a little more and it still didn't make a difference. Is there a way to check the gear timing without tearing half the motor apart?
Also, is it possible (or likely) for the IP to be worn enough that it can't generate the proper amount of pressure to atomize the fuel?
I tripled the wire from the battery to the gp solenoid and doubled it from there to the harness and no change.
Also, I tried to check the compression but the damn tester i bought has an incorrectly designed adapter...won't fit.
I tried advancing the timing a little more and it still didn't make a difference. Is there a way to check the gear timing without tearing half the motor apart?
Also, is it possible (or likely) for the IP to be worn enough that it can't generate the proper amount of pressure to atomize the fuel?
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
When you are cranking the engine, are you seeing white smoke from the tail pipe?
As for the IP, if the mileage on it is unknown, it could be worn out.
I hate to tell you that with so little other information.
How did the power seem when it was running?
The white to light grey smoke, worse at higher RPM's sorta points to injectors that are not spraying correctly.
As for the IP, if the mileage on it is unknown, it could be worn out.
I hate to tell you that with so little other information.
How did the power seem when it was running?
The white to light grey smoke, worse at higher RPM's sorta points to injectors that are not spraying correctly.
Trending Topics
Thread Starter
|
Posting Guru
Joined: Jan 2010
Posts: 1,665
Likes: 4
From: Terre Haute, IN
Dave, yes, there is smoke coming from the pipe after just a couple or seconds.
I'd think there are between 137k and 140k miles on the truck and IP. It felt like it was really sluggish while running. I removed the stack and cut the y off the pipes and it feels a lot better, but still won't start cold.
I'd think there are between 137k and 140k miles on the truck and IP. It felt like it was really sluggish while running. I removed the stack and cut the y off the pipes and it feels a lot better, but still won't start cold.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
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
Thread
Thread Starter
Forum
Replies
Last Post
joe blow
6.0L Power Stroke Diesel
24
Jun 17, 2012 12:25 AM
yukonsly
1994.5 - 1997 7.3L Power Stroke Diesel
8
Feb 1, 2006 10:52 AM
FordPowerStroke
1999 - 2003 7.3L Power Stroke Diesel
2
May 4, 2005 12:27 PM
