Cold start issues, please help. - Page 2 - Diesel Forum

Strokin' 6.0 · 10-20-2009, 03:51 PM

The batteries were just replaced with new Motorcraft OE batteries. The truck turns over no problem....just doesn't fire, unless I leave it plugged in overnight.

King Rancher · 10-20-2009, 04:57 PM

QUOTE " The batteries were just replaced with new Motorcraft OE batteries. The truck turns over no problem....just doesn't fire, unless I leave it plugged in overnight. "

Is your oil topped of to max.. and also are you running motorcraft oil.. the reason i ask is because the injectors run off the oil pressure. and if the oil is too thin or not enough in the engine then there won't be enough to kick in those injectors .. let me know what you find. thanks hope this helps.. James

billy joe jim bob · 10-20-2009, 05:21 PM

Quote:

Originally Posted by Strokin' 6.0

It will crank but will not turn over, fire whatever, unless I plug it in. Even then, after it's been plugged in, it fires, but the truck lopes, until the engine temp warms up, then it's fine and runs normal.

I'm taking it in at the beginning of the month...till then, it can sit in my driveway.

Never had this problem with either of my Cummins.

Reprogram FICM it will fix the cold start prob

LocoMike · 10-20-2009, 10:57 PM

Quote:

Originally Posted by billy joe jim bob

Reprogram FICM it will fix the cold start prob

I wouldn't bet a 6 pack on the reflash.... see this link

03- 6.0 Cold Start Please Help !!!!

King Rancher · 10-20-2009, 11:24 PM

[quote=LocoMike;1797193]I wouldn't bet a 6 pack on the reflash.... see this link

I am with you LocoMike .. mine was reflashed at the first of the year. now that it's getting into the 50's it has a bad clutter for the first 5 mins.. my dad(ex trucker) ask me about my oil level.. i siad it was full. he said what kind.. I said Synthetic .. he said that's your problem.he said oil is too thinned out. injector's not getting the proper oil pressure to work properly until the oil is warmed up to give them proper pressure. so I will be going back to Motorcraft in the next few days. i will let yall know how it goes.

LocoMike · 10-21-2009, 12:03 AM

[quote=King Rancher;1797228]

Quote:

Originally Posted by LocoMike

I wouldn't bet a 6 pack on the reflash.... see this link

I am with you LocoMike .. mine was reflashed at the first of the year. now that it's getting into the 50's it has a bad clutter for the first 5 mins.. my dad(ex trucker) ask me about my oil level.. i siad it was full. he said what kind.. I said Synthetic .. he said that's your problem.he said oil is too thinned out. injector's not getting the proper oil pressure to work properly until the oil is warmed up to give them proper pressure. so I will be going back to Motorcraft in the next few days. i will let yall know how it goes.

THANKS DUDE.... Please let me know if it helps. i just switched to synthetic this summer so these are the first cool temps this oil has seen.

i am confused though, cold oil should be thicker and my AutoEginuty says I have 600+ PSI at Idle on start-up.

In theory, thicker should be higher pressure.... BUT, I will take any ideas.

Thanks and let me know.

King Rancher · 10-21-2009, 12:28 AM

[quote=LocoMike;1797263]

Quote:

Originally Posted by King Rancher

THANKS DUDE.... Please let me know if it helps. i just switched to synthetic this summer so these are the first cool temps this oil has seen.

i am confused though, cold oil should be thicker and my AutoEginuty says I have 600+ PSI at Idle on start-up.

In theory, thicker should be higher pressure.... BUT, I will take any ideas.

Thanks and let me know.

Actually thats why people use synthetic oil in gas engines in colder climates. cause it does not thicken up like conventional oil does, as far as your AE reading that sounds good to me. but I caught myself asking is the thinner oil at 600psi hitting those injectors like 600psi of a thicker oil would be ? But i just can't wait to see if that is the problem. I also called a Ford tech to confirm my father's idea ( sshhh don't tell him i did that..lol.) and he said the same.. The way the Tech explained is that it is more Volume+pressure, rather than pressure with a thinner substance meaning the pressure reading you are getting might not always be 100% oil. since it is thinner it's mix with more air and so on.. The tech didn't say all this word for word .. But it is what I interrupted.

Strokin' 6.0 · 10-21-2009, 08:43 AM

Oil is OE Motorcraft....I don't screw around with snake oil products. The only thing that isn't stock on the truck is the coolant filter, I also had the EGR and the EGR cooler permanently "fixed" and I run Fleetrite ECL coolant, which is what International recommends for the VT-365...none of those things would affect start up.

The oil level is normal.

I'll report on the cause of the problem, after I take it in on the 6th.

LocoMike · 10-21-2009, 08:54 AM

[quote=King Rancher;1797273]

Quote:

Originally Posted by LocoMike

The way the Tech explained is that it is more Volume+pressure, rather than pressure with a thinner substance meaning the pressure reading you are getting might not always be 100% oil. since it is thinner it's mix with more air and so on.. The tech didn't say all this word for word .. But it is what I interrupted.

Humm, it's got me thinking. It is a fact that pressure is not an indicator of viscosity (flow).

Ford has my truck right now and is charging me $ 150 for just a diagnoses (I am totally out of ideas) and that is after $ 126 for a total reflash

Make ya a deal......

Report back on your oil change and I will report back on what Ford says.

Glad I have my AE to weed out what I expect them to say

LocoMike · 10-21-2009, 09:33 AM

[quote=King Rancher;1797273]

Quote:

Originally Posted by LocoMike

The way the Tech explained is that it is more Volume+pressure, rather than pressure with a thinner substance meaning the pressure reading you are getting might not always be 100% oil. since it is thinner it's mix with more air and so on.. The tech didn't say all this word for word .. But it is what I interrupted.

Humm, it's got me thinking. It is a fact that pressure is not an indicator of viscosity (flow).

Ford has my truck right now and is charging me $ 150 for just a diagnoses (I am totally out of ideas) and that is after $ 126 for a total reflash

Make ya a deal......

Report back on your oil change and I will report back on what Ford says.

Glad I have my AE to weed out what I expect them to say

teamroper60 · 10-21-2009, 11:35 AM

Quote:

Originally Posted by LocoMike

i am confused though, cold oil should be thicker and my AutoEginuty says I have 600+ PSI at Idle on start-up.

In theory, thicker should be higher pressure.... BUT, I will take any ideas.

The only problem with your theory is, the PCM is calling for a certain amount of ICP at idle. Everything above that ICP is bled off by the IPR. So your oil could be as thick as crude and you would still only get 600psi.....

King Rancher · 10-21-2009, 01:45 PM

Quote:

Originally Posted by teamroper60

The only problem with your theory is, the PCM is calling for a certain amount of ICP at idle. Everything above that ICP is bled off by the IPR. So your oil could be as thick as crude and you would still only get 600psi.....

And that is exactly what i explained .. is if you have 600psi of thinned out oil .. compared to the "same" 600 PSI of thicker oil .. the 600 psi pushing the thicker oil gives you more oil moving through your system.

teamroper60 · 10-21-2009, 02:10 PM

Quote:

Originally Posted by King Rancher

And that is exactly what i explained .. is if you have 600psi of thinned out oil .. compared to the "same" 600 PSI of thicker oil .. the 600 psi pushing the thicker oil gives you more oil moving through your system.

Not more oil. Just more dense oil. The HPOP system is a low volume, high pressure system, so there is a finite amount (volume) of oil that can move through it at any one time. Nonetheless, 600psi is 600psi, regardless of the oil thickness. The only real differences are how hard the HPOP has to work to create that pressure and what the duty cycle of the IPR will be to maintain it.

LocoMike · 10-21-2009, 03:28 PM

Quote:

Originally Posted by LocoMike

I wouldn't bet a 6 pack on the reflash.... see this link

03- 6.0 Cold Start Please Help !!!!

Well, after having the truck for 3 days and $300 Ford just called and wants more money/time authorization. "says they are not sure of what is causing it". Hey, at least they are honest.

I think NOT. After a reflash of all modules and 2 hrs extra on the Ford Service IDS computer, if they aint figured it out by now I am afraid they are going to start guessing.

I don't wanna hijack this gentlemans post but we seem to be having the same common problem that just began when the night temps here in WV dropped below the 50's.

Just a recap:

I changed the alternator and discovered I had one bad battery. I replaced both batteries with 850 CCA new ones.

I purchased an AutoEnginuity scan program and verified the following:
13.5 volts from system battery/alternator
48 Volts from FICM
600 to 1100 Oil Rail Pressure
Injector Buzz Test = Pass
Installed Fuel pressure gauge and am getting 50 psi.

The truck is throwing no codes. Cam and Crank are in synch but cam always reads 'zero'

Any ideas of similiar experiences are aprreciated !!!!

Strokin' 6.0 · 10-21-2009, 05:01 PM

Quote:

Originally Posted by LocoMike

...I don't wanna hijack this gentlemans post but we seem to be having the same common problem that just began when the night temps here in WV dropped below the 50's.

Too late on that, Mike, but no worries, I'm reading some good posts, which give me good ideas to suggest to the mech, when I see him. Of course, he'll look at me and say, "Well, since you seem to know it all, you fix it", and I'll shut up at that point.