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Started By
Message
7.3 diesel will not turn over under 40 °
Posted on 1/20/15 at 8:05 am
Posted on 1/20/15 at 8:05 am
If I don't plug this bitch in it will not turn over batteries are good according to battery checker dude. WTF any suggestions? Thanks for any suggestions.
8
Posted on 1/20/15 at 8:07 am to Cracker
Glow plugs
Posted on 1/20/15 at 8:10 am to KingRanch
quote:
Glow plugs
Posted on 1/20/15 at 8:11 am to KingRanch
quote:
Glow plugs
This or you have weak batteries even though they were checked.
On my Dodge, I can hear the glow plugs kicking on and off. Don't know if you can hear yours or not.
Posted on 1/20/15 at 8:13 am to fishfighter
You can definitely hear them engage on the 7.3 powerstroke
Posted on 1/20/15 at 8:13 am to Cracker
A) glow plugs
B) I'll take it off your hands
B) I'll take it off your hands
Posted on 1/20/15 at 8:20 am to Cracker
Not turning over at all isnt glow plugs. That's probably weak batteries or starter.
Turning over and not starting is probably glow plugs
Turning over and not starting is probably glow plugs
Posted on 1/20/15 at 8:22 am to Cracker
quote:
If I don't plug this bitch in it will not turn over batteries are good according to battery checker dude. WTF any suggestions? Thanks for any suggestions.
Normaly
Won't turn over under 40? Batteries
Won't crank under 40? Glow plugs
Could be a semi bad starter pulling to many amps from cold batteries.
Hope this helps
ETA you got the right answer while I was typing
This post was edited on 1/20/15 at 8:24 am
Posted on 1/20/15 at 8:39 am to cave canem
113k glowplugs & new relay under 150 bucks batteries under warranty ah starter pulling to many amps that I'll ck into or just replace it not a daily driver but will be now thanks
Posted on 1/20/15 at 8:41 am to Cracker
Batteries are done. A battery tester doesn't know the difference between a good battery or a bad one with a surface charge. Running a thinner synth diesel oil in cold weather helps take some of the strain off the batteries when cold cranking.
Posted on 1/20/15 at 9:13 am to Clames
quote:
Batteries are done. A battery tester doesn't know the difference between a good battery or a bad one with a surface charge.
Agree. That's why the good battery chargers have a load testing device on it. If you load up the battery and the voltage bleeds off...chances are that's an indication of a dead cell and it can't handle the load (starter in this case).
Posted on 1/20/15 at 9:24 am to DownshiftAndFloorIt
quote:
Not turning over at all isnt glow plugs. That's probably weak batteries or starter. Turning over and not starting is probably glow plugs
^ this
My diesel has a hard time starting below freezing, but it turns over
Posted on 1/20/15 at 9:25 am to Cracker
probably battery, is your glow plug light coming on?
Posted on 1/20/15 at 10:14 am to Chad504boy
Yeah, wouldn't it take a really long time to heat them up if they were bad? I'm not sure about the computers on the 7.3 though, so maybe not. Haven't driven one in probably 5 years
Posted on 1/20/15 at 10:19 am to Hammertime
shouldnt these truck have glow plug heaters? in temps that low arent you supposed to turn the key for a min to heat the plugs up prior to cranking?
Posted on 1/20/15 at 10:23 am to CarRamrod
my fil had an issue w glow plug light not coming on at all. we were stuck, some dude suggested we disconnect and reconnect battery, sure enough, everything worked fine after. Doesn't sound like same situation h ere.
Posted on 1/20/15 at 10:31 am to Cracker
quote:
batteries are good according to battery checker dude.
Connections. Take all of your battery connections off and clean them. Then make sure to snug them down real good. Your problem should go away.
Loose battery connections always bite people/mechanics in the arse....
Posted on 1/20/15 at 10:37 am to Cracker
Block heater?
Posted on 1/20/15 at 4:02 pm to Clames
quote:
Batteries are done. A battery tester doesn't know the difference between a good battery or a bad one with a surface charge. Running a thinner synth diesel oil in cold weather helps take some of the strain off the batteries when cold cranking.
agree it's not the glow plugs...There are performance trucks I know of in the northeast that do not have an intake heater or glow plugs in them and they still turn over in January after the motor spins over for 15 seconds or so...
compression will eventually give you the heat needed to complete the combustion process...
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