Very Hard cold starts?
Thread Starter
|
Senior User
Joined: Mar 2007
Posts: 273
Likes: 0
From: At Work!
Very Hard cold starts?
Alright I have purchaced my first f-350 powerstroke 1999 and I have replaced oil and filter air filter and fuel filter. I had trouble when outside temps fell to 25 I checked and replaced glow plug relay,was shot.. started better but still not up to par, rebuilt starter started good until temps started to drop to 20 and below so I constantly have to plug in If I don't plug in and try to start in morning I turn over and it will start ruff chug a little and die Three or more times and it will start and chug and then finaly stay running?My theory is the glow plugs are bad and I am going to have scanned tonight to check all pressures ect... By the way has anyone heard of a scanner that can check eack individual glow plug to see if they work or not??? P.S. I have checked gpr with a test llight and relay is working wait to start light stays on longer when engine is cold , so what do you guys think??????am I on the right track almost forgot removed batts and had them checked and are good
Thread Starter
|
Senior User
Joined: Mar 2007
Posts: 273
Likes: 0
From: At Work!
I have checked the glow plug relay with the test light and the relay gets power when key is on and i know that the light in the dash is an idiot light but I have not checked anything with a voltmeter I dont want to dammage wires that run in valvecover any suggestions on that ? furthermore anyone hear of a scanner that can check them? My friend has a snap-on scanner that he uses at work and he seems to think it will check each one but I dis agree any comments?
Cargo Master
Joined: Apr 2004
Posts: 3,162
Likes: 1
From: Vilonia Arkansas
The only way I know of to check the glow plugs is to pull the plug at the valve cover gasket and check with a ohm meter, but that doesn't mean there isn't another. In that plug are pins for the glow plugs and the injectors and I can't remember which are for what .Hopefully some will know I will see what I can find . I believe that your on the right track with the glow plugs .
Trending Topics
Cargo Master
Joined: Apr 2004
Posts: 3,162
Likes: 1
From: Vilonia Arkansas
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Rezvani's Latest Post-Apocalytic 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
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
Thread Starter
|
Senior User
Joined: Mar 2007
Posts: 273
Likes: 0
From: At Work!
Thanks guys for your help I will be checking into my glow plugs cause as I was reading my truck was chugin with white smoke at cold start ups I will let you guys know what I find out when I get there.Thanks again
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Ohming UVC connector:
Checking the ohms reading at the valve cover connector on the outside.
Pin Out
G G I I C I I G G
G=Glow Plug +
I = Injector +
C= Injector Common
***The injectors fire with a 115VDC signal from the IDM. Do Not pierce the wires to test.***
Test between "I" and "C" to test the injectors, should be less than 5.0 Ohms.
To check glow plugs Test between "G" and battery ground. Should be between 0.6 and 2.0 Ohms
Checking the ohms reading at the valve cover connector on the outside.
Pin Out
G G I I C I I G G
G=Glow Plug +
I = Injector +
C= Injector Common
***The injectors fire with a 115VDC signal from the IDM. Do Not pierce the wires to test.***
Test between "I" and "C" to test the injectors, should be less than 5.0 Ohms.
To check glow plugs Test between "G" and battery ground. Should be between 0.6 and 2.0 Ohms
Thread Starter
|
Senior User
Joined: Mar 2007
Posts: 273
Likes: 0
From: At Work!
I went out to do my ohm test and just want to get an opinion on the plugs are there any tricks to unplug the harnesses? from what I see you just press down on plug and pull,but want to be sure, because I don't want to damage just being carefull thanks all
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Originally Posted by rblaine9000
I went out to do my ohm test and just want to get an opinion on the plugs are there any tricks to unplug the harnesses? from what I see you just press down on plug and pull,but want to be sure, because I don't want to damage just being carefull thanks all
Hotshot
Joined: Dec 2006
Posts: 14,069
Likes: 17
From: Melbourne, Ky
It's a good idea to check the glow plugs. If, they check out to be OK, you could try letting the glow plugs work a little longer before starting. They typically burn for 2 minutes when it's cold. Just turn the ignition on and wait a minute or so after the "wait to start" light goes out. Another thing, are you using any fuel additives? Something that boost the cetane rating will help in cold starting too.
Thread Starter
|
Senior User
Joined: Mar 2007
Posts: 273
Likes: 0
From: At Work!
Hey guys I finaly made it to the garage to check glow pug pins and as I had suspected I only have four plugs with continuity four are open so there for I am trying to start my truck with four cylenders! Thanks for the help in diagnosis But one last Question, in order to change plugs on passenger side do I have to remove or loosen a/c compressor mounting bracket to remove cover thanks again
Thread Starter
|
Senior User
Joined: Mar 2007
Posts: 273
Likes: 0
From: At Work!
I changed my gp's yesterday guys and today cold startup was great no smoke and no chug! I thank all who helped me in my diagnosis. Drivers side was not to bad but I found a trick to passenger side get to lower bolts on valve cover from inside the fender well was easiest for me!!! thanks again