thuglike
Active member
I will get into it further..but later. Could be a good discussion.
Idle with 160/30 Injectors
- Thread starter darkside708
- Start date
thuglike
Active member
Darkside,
1 more question...does the truck fire up faster cold? Does it labor at all to fire hot?
1 more question...does the truck fire up faster cold? Does it labor at all to fire hot?
darkside708
Member
Its been slower to start cold lately just because Its been cold as **** lol. Seems to be normal when I do a hot start. I could be wrong.
I got icp readings this morning. Hot idle dc was between 8.9-9.3%. PSI was mainly jumping between 448-562 with an occasional jump to 592. Also a few weeks ago I did a 60-90mph WOT run. Dc was 65% and PSI settled down around 2300.
I got icp readings this morning. Hot idle dc was between 8.9-9.3%. PSI was mainly jumping between 448-562 with an occasional jump to 592. Also a few weeks ago I did a 60-90mph WOT run. Dc was 65% and PSI settled down around 2300.
lincolnlocker
Well-known member
Normally icp will not make that big of a jump. It may fluctuate 20-30 psi but anything more then that I would say the ipr is getting weak. Especially if its fluctuating 100psi... at wot your pump is weak as hell..
live life full throttle
darkside708
Member
I figured it would be about time. Its got almost 276k on it now.
Haha..They are a challenge and since you have the newest pump, I guess thats why I put you on the hot seat a little. I do want to understand more about the science of this application. Pump guys could do more here to bring further understanding as well as develop data to better match pumps to applications.
276K will make for a tired pump and your datalog appears to show it. Smaller stage 1/1.5s run a fair amount of PW, so it will be rougher on a tired pump. From other reports, your HB should be a good upgrade under high demand.
thuglike
Active member
Yeah...that's not good at all. The pump is working far too hard to maintain 2300 psi. I'll also bet your tunes call for a DC anywhere from 10-12% at idle but it can't muster it. You ICP jumping around like it does...it's trying to compensate for some type of issue. Question is..What? ICP sensor, IPR, Injector internals, injector o-rings, pick up, hpop internals, oil leak..fun, fun
greyford1979
Active member
Meh, your truck just sucks!!! Sorry fellas I had to, OP is my brother LOL
Isn't an ipr hovering that close to 9% usually indicative of sticking? I thought if you watch on a realtime scan type monitor and ipr is at or near 9% its one way to warrant checking/replacing and ipr.
Which would cause icp issues like a mother^.
Which would cause icp issues like a mother^.
darkside708
Member
I replaced the icp last year some time in the spring.
PSD POWER007
Member
I agree with this whole heartedly. NLT did explain their pump build in a thread not too long ago and I was very appreciative for that. But all of the other pump builders treat it like it's some top secret project. Coming from a performance background, I'm surprised that there are absolutely no flow rates to compare etc with all of these pumps. I personally went with a Adrenaline when it was on sale cause it fit my budget and more importantly, I couldn't find any reports of a failure hardly anywhere. But even Bob wouldn't give ANY info on the build or flow. I get worn out by so and so saying my pump will outflow their pump with absolutely no data to back it up.
littleredstroker
New member
doesn't mean its not bad... I had one last 3 months...
I also put a new ipr in at the same time... replaced the icp AGAIN. and then about a year later after a motor swap and tunes swap I had a horrible lopey idle... spent about 3 weeks trying to figure out what it was.. finally the truck died going through a intersection ( I was "that guy") ... ipr was trashed. new one fixed all the problems... always check the simple stuff first. whats your DC at at an idle
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The Brad
New member
Darkside708, have you made any progress with this issue? I have the same idle lope, but with a good hpop.
darkside708
Member
I replaced the hpop with a honey badger jr, new ipr, new orings in fuel bowl, and a riff raff frx two weeks ago. Runs great, but still the same warm idle.
EDIT: I forgot to mention fuel pressure tends to fluctuate a few psi when it lopes like that. Don't know if that matters or not...
EDIT: I forgot to mention fuel pressure tends to fluctuate a few psi when it lopes like that. Don't know if that matters or not...
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lincolnlocker
Well-known member
What is the battery voltage at idle?
live life full throttle
live life full throttle
The Brad
New member
I've been chasing the same issue with 200/80 hybrids. Idles smooth as butter when oil is under 120*, but starts loping enough to shake the truck at 190* eot. Are you able to check perdels? I have been indentifying bad sticks by watching perdels and moving the suspect stick to another cylinder. If the bad Perdel follows, I replace the stick.
My fuel pressure doesn't budge at idle. I wonder if there's something going on with your FPR.
Here's a looong interesting read on the issue, but they seem to be talking about bigger nozzles than our puny 30-80%'s.
http://powerstrokearmy.com/forums/archive/index.php/t-16543.html
If you do find the cure I'd, appreciate an update.
Thanks
I don't know if this will help or not, but I just went through a similar situation. I just have the 160 singles with stock nozzles. My truck idled smooth as butter when it was cold. Once warmed up, it loped pretty bad. The lope was really bad when the truck was coming back to an idle after acceleration or even just throttling up in neutral. It would lope really hard anywhere from several seconds up to 30 seconds or so then it would smooth out somewhat, but not as smooth as I thought it should be. It still had a slight lope. I replaced the ICP and swapped in a brand new IPR that a buddy had. I was beginning to think I had a bad injector or maybe a torn o ring from the install. I was getting really frustrated. I have Gearhead tunes and I called Matt. I sent him some AE data and drove down to let him look at the truck. After months of spinning my wheels, he had it running as smooth as ever with a little tweaking of the tunes. I don't know what he did to the tunes, but I am a happy camper. The truck runs great now. Anyways, hope this helps y'all out.
darkside708
Member
DC is 9.7
14.3
I keep wondering if tuning would cure this. I'm starting to get tired of it idling like this. It shakes a little bit which really bothers me.
