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Discussion Starter #1
I installed my steath pumps yesterday. What a difference, /ubbthreads/images/graemlins/smile.gif I fried my stock cluth first time I got on it. /ubbthreads/images/graemlins/eek.gif My question is I noticed when I start the truck the idle revs for a second before it smoothes out, exactly like it did when I installed a mechanical gauge to the hpo rail with 40" of hose. I figure it may be lack of oil in the hpop resevoir? Has anyone else noticed this? Can a larger resevior be fabricated? I've worked in some cold places and this little rev has got me worried that it may leave me standed. /ubbthreads/images/graemlins/shrug.gif
 

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Congrats on the new Stealth!! /ubbthreads/images/graemlins/smokin.gif Sounds like you still have some air in the hp oil rails. Make a few good hard runs, after some driving it usually clears up.
 

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Discussion Starter #3
ok, air, that makes sense. I have a ofe clutch coming Friday so hopefully I'll run it out this weekend. thanks
 

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Since I got my stealth installed, I have a really rough idle problem for about 5 seconds when I start it before it smooths out. This only happens if it has been sitting for a few hours or first thing in the morning. Doesn't happen after it is warmed up. I have had it installed for 2 weeks now. Could there still be air in there?
 

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Did you have your programs adjusted to reflect the addition of the pumps?
 

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[ QUOTE ]
Since I got my stealth installed, I have a really rough idle problem for about 5 seconds when I start it before it smooths out. This only happens if it has been sitting for a few hours or first thing in the morning. Doesn't happen after it is warmed up. I have had it installed for 2 weeks now. Could there still be air in there?

[/ QUOTE ]

Do you have any leaks? Is the crank time any longer then it was before after sitting? If so there may be a resevoir problem that is draining soem while sitting causing air to get in the system after sitting for a little while.
 

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DP tuners were added after stealth was installed. Jody programmed for the pumps. As far as leaks, I don't think I have any leaks but not sure. I cannot even begin to see or feel down in the valley now that 4 line output and regulated return are in. It doesn't seem to crank any longer than before the pump was installed. It takes a couple of cranks first thing in the morning, but nothing more than before. In the afternoon, after the truck has been sitting all day at work, it fires up, but usually still goes to rough idle for a couple of seconds.
 

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I also had that problem for some dumb reason but when it had the updated feed and dual IPR's installed it went away.. /ubbthreads/images/graemlins/shrug.gif
 

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It really does sound like "Air" to me, maybe check all the fittings on the regulated return.. or wait and see what happens...
 

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Mine does the same thing. It's been on for over a year. Thats a good question? Hay Bean do ya got any other idea's besides a resevoir problem? Ben
 

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Dave, even with a single pump, my more agressive burns, (DP and Wildman's), has a little rump-rump for about ten seconds before leveling out....this is on a cold or hot start...97 strokerman has noticed the same thing with his set-up which is very close to mine.....the burns that are calling for higher icp down low in the rpm range is what I atribute it to.......you in commercial building? Been a general super for 15 years.........
 

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If his is like mine It's not a rump rump but a noticable miss for a few seconds just after starting.
 

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Discussion Starter #15
mine is a rump rump, could be tunes because they were reburned when I got the pumps. I do occasionally have a miss at idle but I'm guessing it is air because it comes and goes. I've driven it about 20 miles since the install and I have noticed it's getting better but has not gone away yet.
 

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This reservoir leaking problem could be what has been causing me the long crank over times when it sets, What do I look for here, I already replaced the hpop regulator and sending unit which made a big difference.
Greg
 

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Give it at least 50 miles.You don't have to romp the live'n daylights out of it during that 50 miles unless you like to or feel the need but after every inj swap I have done it has taken at least that to work the air out.
 

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With the single IPR you will get a small spike in pressure on startup due to it bleeding off both pumps and it not reacting fast enough. Many times even with single pumps and PCM will let the pressure go to 3000+ on startup then settle it back down once it fires, with dual pumps it takes it just a hair longer to settle the pressure down giving it the lope or romp. Dual IPRs help this because it can react quicker to the spike.
 

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[ QUOTE ]
With the single IPR you will get a small spike in pressure on startup due to it bleeding off both pumps and it not reacting fast enough. Many times even with single pumps and PCM will let the pressure go to 3000+ on startup then settle it back down once it fires, with dual pumps it takes it just a hair longer to settle the pressure down giving it the lope or romp. Dual IPRs help this because it can react quicker to the spike.

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I have dual IPR's and 4 line output. The problem doesn't really bother me that much. Truck doesn't die or anything like that. Bean, do you think this a problem worth addressing, or is it just something to live with. After all the time it took to get this thing in there, I would rather not worry about it.
 
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