So I have a couple injectors with +/- 6.0 at idle and rail at idle is 12k should I be concerned or no?
Raised Idle Rail Pressure & Balance Rates
- Thread starter D1rty-max
- Start date
i would want to know why your rail is that high and balance rates mean nothing unless you give us the main injection rate at idle as well
Raised Idle Rail Pressure & Balance Rates
Yes, idle around 6k. Kill the injectors unless you get a new fpr in there. Rated are gonna be off the wall at elevated pressures
2004 Silverado Cali lb7, Airdog ll 165, fresh sticks at 325k, Rick Fletes Dsp 5 on v2, 33x12.5 nitto at on 20 inch American Racing 20x10 wheels, Stage 5 Built Transmission by Mike Cole with triple disc billet low stall converter, 4 inch Injen cold air intake, Profab Intake Horn, Batmo Wheel, PPE Race Valve, Full EGR Removed w/ fed belt, 3.5 inch MBRP Downpipe, Full five inch MBRP Exhaust axle dump, lbz cp3 pump, Dual Platinum AGM Duralast, High Output Alternator, Cognito Pittman and idler w/ support kit, Cognito Upper Contol arms, Drilled and Slotted Rotors on all four Corners, FED Y Bridge, Shantz Custom Fab Traction Bars.
Yes, idle around 6k. Kill the injectors unless you get a new fpr in there. Rated are gonna be off the wall at elevated pressures
2004 Silverado Cali lb7, Airdog ll 165, fresh sticks at 325k, Rick Fletes Dsp 5 on v2, 33x12.5 nitto at on 20 inch American Racing 20x10 wheels, Stage 5 Built Transmission by Mike Cole with triple disc billet low stall converter, 4 inch Injen cold air intake, Profab Intake Horn, Batmo Wheel, PPE Race Valve, Full EGR Removed w/ fed belt, 3.5 inch MBRP Downpipe, Full five inch MBRP Exhaust axle dump, lbz cp3 pump, Dual Platinum AGM Duralast, High Output Alternator, Cognito Pittman and idler w/ support kit, Cognito Upper Contol arms, Drilled and Slotted Rotors on all four Corners, FED Y Bridge, Shantz Custom Fab Traction Bars.
It's raised that high to clean up the haze at idle, however Iv been having a surging issue while cruising Iv been trying to figure out.
you cant check balance rates with a raised rail pressure like that. it will throw balance rates way off. put a stock tune in and see what they are. if you give us the main injection rate, it will help with where the injectors are even with the higher pressure.
if its surging, log it and post the log.
if its surging, log it and post the log.
Doubt it will run very well with 200 overs on a stock tune. Even with that big of sticks, 12K rail seems pretty high to me. With injectors that big, and a tune as modified as needed for them, balance rates and such are probably never going to be "good".
I agree, put a tune in it with stock rail pressure to check balance rates. It'll run fine enough to get a reading.
Have you also tried playing with timing at idle to help the haze?
does it only happen with on cruise control or when you just hold the throttle steady? this is a large injector issue from the sounds of it. have you discussed this mark? did this start after the 200% installed or some time after?
It started doing it a couple weeks after install it seems to be hit or miss when it does it. Iv talked with Mark he's made a couple adjustments. He found voltage is jumping and switching tunes on the DSP5 switch, but it only switches the tuning on position 3 and 4 I'm starting to wonder if its a possible ground issue but all my grounds are tight and clean.
How do the logs look? Does it look good in the pics?
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snap shots are hard to tell from. can you record this same stuff in EFI Live Scan Tool? you will then save it, resave it as a zip file, then you can upload it here.
Here's a log of it at idle and at operating temp. Ill get one cruising in a bit!
How does it look?
How does it look?
It's hit or miss I'll log it when it's doing it and post it, how did the injectors look?
My bad for the late reply had a busy weekend, this was on the 2nd from last tune with the dsp5 switch I don't have a stock tuning file for the truck.
Also to note When I first accelerated this morning it puffed out a big cloud of white smoke and immediately cleared up.
Also attached is a log of the truck cruising.
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