worldwide73
New member
- Joined
- May 20, 2011
- Messages
- 117
- Reaction score
- 0
Ok so I've been searching, asking and talking to people about this.
Warm the truck runs great, couldn't ask for better.
"cold" starts are hit or miss.
And before we get started I've check the ficm voltage we are good there, have good fuel pressure, bypass oil filters, clean oil, all filters clean etc.
Cold start today=90* oil temp. ICP KOEO .2v, cranking went almost to 2v and 1250or so psi. Thats when it starts like crap, almost like it "rolls" over. The other day I started it and it died. When the psi gets so high it doesn't like it for sure. But started right back up.
Warm starts we are good. ICP KOEO .2v cranking to maybe 1v and psi to 600-800 fires right up.
Moving after a "cold" start today. When ever the ICP got over 2.2v and 1400 psi at 2100-2500rpm the truck starts to "miss" out = which is what i refer to as stiction. Keep it under 1800rpm or icpv under 1.9 its fine until warm.
Warm moving fine. Idle at about 600psi, at 75mph 1400psi. Nothing is erratic or fluctuates a bunch either hot or cold.
Oh yea currently I'm using valvoline premiun blue 15w40, and have used T6 with the same symptoms.
I have not preformed a contribution test as I don't have problems when warm or any other issues.
I believe that this is stiction, although I'm not sure why the icp psi get so high when starting, that seems to be the direct correlation between crappy starts. Hopefully this post may help someone with the same systems or build a better post.
So does high ICP psi on starting mean sticky injectors? Probably...
Warm the truck runs great, couldn't ask for better.
"cold" starts are hit or miss.
And before we get started I've check the ficm voltage we are good there, have good fuel pressure, bypass oil filters, clean oil, all filters clean etc.
Cold start today=90* oil temp. ICP KOEO .2v, cranking went almost to 2v and 1250or so psi. Thats when it starts like crap, almost like it "rolls" over. The other day I started it and it died. When the psi gets so high it doesn't like it for sure. But started right back up.
Warm starts we are good. ICP KOEO .2v cranking to maybe 1v and psi to 600-800 fires right up.
Moving after a "cold" start today. When ever the ICP got over 2.2v and 1400 psi at 2100-2500rpm the truck starts to "miss" out = which is what i refer to as stiction. Keep it under 1800rpm or icpv under 1.9 its fine until warm.
Warm moving fine. Idle at about 600psi, at 75mph 1400psi. Nothing is erratic or fluctuates a bunch either hot or cold.
Oh yea currently I'm using valvoline premiun blue 15w40, and have used T6 with the same symptoms.
I have not preformed a contribution test as I don't have problems when warm or any other issues.
I believe that this is stiction, although I'm not sure why the icp psi get so high when starting, that seems to be the direct correlation between crappy starts. Hopefully this post may help someone with the same systems or build a better post.
So does high ICP psi on starting mean sticky injectors? Probably...