DVSseven

So I Replaced My Wiring Harness Yesterday And Still Nothing! Im So Frustrated Right Now, Just Need To Vent I Guess. I Have No Idea As Of What To Do Now, Check My Past Posts If Anyone Can Offer Any Help Thanks.... Basically The Car Pulls Great Till Right Before Transition And Then Dumps Fuel And Does Not Pull Until After Transition. I Had The Car At Pettit Week Before Last For A Week And They Could Not Figure It Out, So What The Hell Do I Do Now....

DVSseven

While At Pettit He Said That All Of The Fuel Comonents And Stats Check Out Perfect. I Wonder If Now I Should Start On The Control System, Solenoids, Sensors And So-on. Thing Is I Have Replaced Most Of The Sensors That I Would Believe To Produce This Problem. I Need Help Guys, I Need The Real Guru's Here, I So Far Have Stumped The Best In The Nation, Cam At Pettit, His Local Tuner, He Says He Tried Steve Kahn On The Phone For Help, And A Gentleman From Japtrix. Not That Thier Truly Stumped But I Wish Someone Could Point Me In The Right Direction, Im Almost To The Point Of Selling! That Infinti G35 Coupe Is Looking Better Every Day, But I Would Probably Be Miserable Without The 7......

apex_sideway

Honestly, dude i'm going to go with a LS1 conversion. Go to www.hinsonsupercars.com . I love to rotary but stories like these are making me dread the day when i start to have *SERIOUS* problems

DVSseven

I Know What You Mean No Car Is Worth This Much Headache After $30,000 Worth Of Work And I Cant Even Enjoy It. Then, I Take It To Pettit Supposedly One Of The Best In The Nation And They Say "sorry We Tried I Dont Know What Else To Tell You."aint That Some Bull-****! Thats The Second Time Ive Been To Pettit, I Have Lost My Faith. Very Nice Guys, Great At Tuning And Building, But Troubleshooting I Dont Know About That One!

HarrisRacing

I would suggest swapping out your secondary injectors with different ones. I would assume that they switch on around that time and you could have stuck injectors or a bad wire in that system. That's all I can suggest. I'm also going LS1 here and am almost finished with the first car...isn't this ironic

Patrick

apex_sideway

Well, you could go to ASI racing? I don't know man, i personally can't afford to spend more money on a engine that can blow up at any time.

DVSseven

Harrisracing, I Thought About Trying To Replace The Injectors But We Took Them Out And Benched Them While At Pettit. On Top Of That They Were Rebuilt, Flowed And Matched At Marren Fuel Injection Last Summer Before I Put The New Motor In...

speedsilver7

iTrader: (8)

what was the problem?i just saw this thread today

DVSseven

Basically The Car Comes Out Of The Hole Strong, And Pulls Great After Transition, But Right Before Transition It Dumps Fuel So My Midrange Is Shitty.

Mahjik

iTrader: (1)

Seeing as you haven't fixed it yourself, I wouldn't knock anyone else for not being able to fix it either.


Have you tried finding someone with a different ECU than the M2 and try it out?

G's 3rd Gen

iTrader: (11)

Damn.. I cant believe Pettit didnt figure it out.. Try poorman's non-sequential to see if the prob. still appears. If not start checking all the b.s. solenoids..

the knight

what are running between the tank and the motor like fuel filter, pump ect

SUPEROTARYPOWER

DVSeven You really need to PM " ICEMARK" hey says he knows everything there is to know about this kinda stuff.....SO PLEASE FORSURE ASK HIM as i would hate to see you take out your rotary for a LS1 conversion..

DigDug

What exactly do you mean by "dumps fuel"? Like it suddenly goes way rich?

DVSseven

Yes On The Dyno At Pettit, It Starts To Build Power Then Before Trans. It Just Goes Way Rich, And Basically Puts Out The Fire. But, Then After The Secondary Comes Online It Pulls Like Gangbusters. And Its Not An Intermittent Problem It Does This Everyday. Mahjik, Im Not Knocking Anyone, And I Myself Do The Work On My Car But I Was At A Point That After A Year Of Troubleshooting Had To Get It On A Dyno To Pinpoint The Problem. And For The Record I At No Time Will Be Doing An Ls1 Conversion.

DVSseven

Has Anyone Ever Had A Bad Injector Even Though It Had Spec'd Out Fine. The Injectors Are Stock But Rebuilt Last Summer At Marren Fuel Injection. And We Benched Them With Resistance And They Checked Out Fine. Question Is, Could There Be A Problem With The Injector Under-load While In The Car That We Cannot See When Bech Testing Them?

TT_Rex_7

What exactly have you replaced?

-Alex

DVSseven

Plugs, Wires, Crank Sensor, All Thermo Sensors, Air Temp, Coolant Temp, All Coil Packs, Igniter, Tested The Tps, Replaced Knock Sensor, Map Sensor, New 20b Pump, Rebuilt Injectors, Oil Injectors Are New, 99 Turbos, New Motor, Wiring Harness, Silicone Lines, New One Way Valves, Checked Flow Rate And Capacity, Etc.....

DVSseven

you know EVERYTHING!, OH AND I HAVE THE M2 ECU, BUT I HAVE TRIED A PETTIT, AND PUT MY STOCKER BACK IN. WITH NO DIFFERENCE....

POS7

I'm not the rx7 expert, but there are 4 basic systems that can go wrong. Boost, ignition, fuel, and electrical. If you pretty much checked out everything related to ignition and fuel, you may want to take a look at potential boost or electrical problems.

How do you know its dumping fuel? Is it smoking? do you have a 10-8-10 pattern? The car may be running overly rich at transition because you have a boost issue. I see no reason for the fuel system to run fine up until transition, then suddenly dump fuel into the system, then run fine after transition.

Perhaps you can check with shops in your area that specialize in electrical systems to see if you have any potential shorts in your system.

Good luck

DVSseven

My Boost Pattern Holds Strong @ Like 11-10-11 With No Leaks, And Also My Transition Is Quite Smooth So I Doubt That There Is A Problem With The Boost. Electrical Is A Possiblity But I Have Looked All Over The Engine Bay Before And After The Engine Was Installed And Have Had No Luck Finding Anything. Even Yesterday While The Harness Was Going In Me And A Friend (certified Rotary Tech. For 30 Years Inspected And Found Nothing Visibly Wrong. Its Just So Strange, That The Car Runs Great Around Town Gets Decent Gas Mileage And Has No Ignition Break-up In High Or Low Rpms. None Of Your Typical Symptoms, But Whatever Thats An Fd For You. Doesnt Help That This Pos Car That We All Love/hate Soooo Much Is Obd-1!!!!!!!!!

DVSseven

Im Going To Borrow A Friends Pfc This Weekend And Drive It Around Town And Monitor All The Sensors And The Injector Duties To See If I Can Find Anything....

moehler

iTrader: (12)

Have you slapped a widenband on it to see if you are really dumping fuel?

TT_Rex_7

I'm not an expert by any means, but i'd check out the fuel system. First off, the fuel pump on the FD's run at 9 volts, and then switches to 12 volts. I'd research to see exactly when that switch happens. It might be happening during the transition, and dumping loads of fuel. If that's the case, then either switch to a diffrent fuel pump, or get a stand alone. You said you can borrow a PFC, so i'd start there, and see what happens, and what the controller says. (injector duty, etc. etc.)

I'd also take a look at the FPR. Not sure if that could be a problem or not, but worth checking.

-Alex

DigDug

I agree, you should confirm that you are actually running rich at transition.

What injectors are you running?