On Going Starting Issue....
Thread Starter
|
Laughing Gas
Joined: Feb 2004
Posts: 1,080
Likes: 1
From: Elsinboro, NJ
On Going Starting Issue....
I'm at a loss. Everything its cold (35-40 degrees or less) and the truck is not plugged in it won't start. Like nothing....
I'll plug it in and let the EBH work for a little and it will crank over and fall on its face. Leave it plugged in for a while longer and it will finally stay running. (not happily) It is ignorant, nasty and shakes like an earthquake when its could. Once its up to temp you would never know anything like this is going on.
In my mine it has to be one of two things. Tuning or Injectors but I'm opening up to other possibilities...
This all started last year when we pull the engine and did the injectors and a bunch of other things.
BigRed's Engine Pull
Here are a few pictures from Screen Shots from AE and a couple videos of it trying to start. I have a excel file of data logging but can't figure out how to get it up here, so if anyone could look at it and point me in a direction I would extremely grateful.
1100 RPM CCT
Idle CCT
Let me know what you think...........
I'll plug it in and let the EBH work for a little and it will crank over and fall on its face. Leave it plugged in for a while longer and it will finally stay running. (not happily) It is ignorant, nasty and shakes like an earthquake when its could. Once its up to temp you would never know anything like this is going on.
In my mine it has to be one of two things. Tuning or Injectors but I'm opening up to other possibilities...
This all started last year when we pull the engine and did the injectors and a bunch of other things.
BigRed's Engine Pull
Here are a few pictures from Screen Shots from AE and a couple videos of it trying to start. I have a excel file of data logging but can't figure out how to get it up here, so if anyone could look at it and point me in a direction I would extremely grateful.
1100 RPM CCT
Idle CCT
Let me know what you think...........
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
The injectors are about 3 ohms, but the glow plugs are lower. I'm not saying you have bad GPs, but the tests I suggest ensure there are no electrical connection issues... a common bane of the 7.3L
Post Fiend
Joined: Sep 2006
Posts: 7,426
Likes: 6
From: Sioux Falls, SD
For the Excel file you can make the data into a graph by using Excel as well. After u make the graph you can save it as a picture and post it like u did the others..... If u have problems just let me know.
PREMIUM SPONSOR
Joined: Mar 2010
Posts: 72
Likes: 0
From: Monterey Bay. CA
Mike, did you run a buzz test? I watched the videos. Sounds like an injector issue. Are you starting on diesel or grease?
Thread Starter
|
Laughing Gas
Joined: Feb 2004
Posts: 1,080
Likes: 1
From: Elsinboro, NJ
I did run a buzz test and sounded ok in the cab. I'll record on with the phone in the engine compartment.
Going out now to ohm out the glow plugs...
Trending Topics
Lead Driver
Joined: Jun 2004
Posts: 6,340
Likes: 588
From: Amarillo, TEXAS!
New glow plugs should ohm between 0.6 and 2.1 ohms, plus the resistance in the wiring harness of maybe half an ohm or so. The resistance changes as they age, but any that are very high or infinite are a problem. Could be wiring, or the glow plug itself.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
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
PREMIUM SPONSOR
Joined: Mar 2010
Posts: 72
Likes: 0
From: Monterey Bay. CA
Its been a long time since I paid attention to a cold start but your DC seems a little high for idle. At least a warm idle. I never noticed what mine was like on a cold start. Any chance the tin nut has come off the back of the IPR?
Thread Starter
|
Laughing Gas
Joined: Feb 2004
Posts: 1,080
Likes: 1
From: Elsinboro, NJ
Ohm'd the UVCH. Each glow plug read 1.2ohms with 1 reading 1.1ohms. Verified that there was 11.5 volts on battery side of GPR and 11.5 volts on switched side while on. KOEO
I'm going to go ahead and rule out a glow plug issue....
The wire harness looked good with no burn marks. Dark marks in the pictures are from my dirty gloves touching them.
Driver Side
Passenger Side
I'm going to go ahead and rule out a glow plug issue....
The wire harness looked good with no burn marks. Dark marks in the pictures are from my dirty gloves touching them.
Driver Side
Passenger Side
Thread Starter
|
Laughing Gas
Joined: Feb 2004
Posts: 1,080
Likes: 1
From: Elsinboro, NJ
Sorry Peter, I just noticed this. That 34 you see isn't duty cycle. That engine oil temp...
Thread Starter
|
Laughing Gas
Joined: Feb 2004
Posts: 1,080
Likes: 1
From: Elsinboro, NJ
I haven't had the chance yet. This condition only really shows it's ugly head when the truck sits for a couple of days. Been driving it more now and haven't had the chance to do this.
I did however order a Stancor relay. I needed new dust seals and stub axle seals so I ordered a relay also. I'm currently using the AIH relay for me glow plugs. My original glow plug relay died last year and I took out the AIH a while ago.
Aside from the GPR being bad does is sound like it could be anything else?
I did however order a Stancor relay. I needed new dust seals and stub axle seals so I ordered a relay also. I'm currently using the AIH relay for me glow plugs. My original glow plug relay died last year and I took out the AIH a while ago.
Aside from the GPR being bad does is sound like it could be anything else?
Post Fiend
Joined: Sep 2006
Posts: 7,426
Likes: 6
From: Sioux Falls, SD
I would check the glow ply system and starter first. According to Your description it seems to be glow plug related since your injectors were just done recently. So it only does it occasionally ?