SickNasty99GST
10+ Year Contributor
- 33
- 0
- Sep 24, 2009
-
Pearl Harbor,
Hawaii
Alright, so I'll start with the mod list first:
-Evo III Intake Manifold -Evo III 16G Turbo -Crushed 1G Blowoff Valve -RC Engineering 750cc Injectors -Walbro 255lph fuel pump -Forced Performance Manual Boost Controller -JM Fabrication Header Heatshield -Stainless Steel Turbo Oil Line -B&M Shortshifter -Full Apexi Exhaust, 3'' piping (Mandrel Bent) -Optima RedTop Battery -Apexi Intake w/ K&N Filter -No-name Front Strut Bar -Magnecore Spark Wires -NGK BPR6ES Spark Plugs
So, the Eclipse got tuned back in January on Dynapacks, the weekend before I left on deployment. It got tuned conservatively to 14 psi, plenty for my wife to handle while I was away. The car drove fine for about a month. One day, out of the blue, it died on the side of the highway. And my wife does not abuse the car... just normal driving in light traffic, and she said it leaned out on the Uego and died.
Fast forward: I came home off deployment in August and started digging into the issue. As of now, I have replaced the fuel pump with a brand new Walbro 255, I pulled the injectors out and had them sent to RC to be cleaned. Injector number 2 was reported as "dripping," it was cleaned, and all 4 tested excellent after the process. I am throwing a check engine light, but my reader reports it as "failing number 2 injector" even after the cleaning.
I replaced the fuel pressure regulator, the fuel filter, the MAF, and have done a boost leak test, to no avail.
When you drive the vehicle, it drives fine up until about 3,000 rpms and roughly 5psi of boost, then it leans out and starts to shudder and bog. I thought maybe it was a tuning issue, so last Saturday I took the Eclipse to a local shop here in Hawaii and Chris from AMS in Chicago put it on the dyno. He couldn't complete a single full out run... tried a few times while he was playing with the settings on the Neo, and then brought it down off the dyno. He said the way the car's running, it seems like the fuel pressure is dropping as the RPMs climb. I don't have a fuel pressure gauge, so I can't verify that theory just yet. After this next paycheck I'll be ordering one and installing it just to see if this really is my issue.
I was wondering if maybe I should test the voltage on the fuel pump, and if so, where do I connect the multimeter leads? Also, should I do the rewire?
(As clarification, during normal acceleration, say from a stop light in first gear, AFR's will go from 13.x to anywhere 16.6 up to 18...blanking out the Uego. At cold idle, the AFR's are 11.0-14.0...at warm idle, AFR's are from 16.5-17.8)
Any input would be greatly appreciated. The car's been down since February and it really is a shame because she's a beast when she runs right! Thanks for your time guys! Any questions feel free to ask, and I'll answer as best I can
-Evo III Intake Manifold -Evo III 16G Turbo -Crushed 1G Blowoff Valve -RC Engineering 750cc Injectors -Walbro 255lph fuel pump -Forced Performance Manual Boost Controller -JM Fabrication Header Heatshield -Stainless Steel Turbo Oil Line -B&M Shortshifter -Full Apexi Exhaust, 3'' piping (Mandrel Bent) -Optima RedTop Battery -Apexi Intake w/ K&N Filter -No-name Front Strut Bar -Magnecore Spark Wires -NGK BPR6ES Spark Plugs
So, the Eclipse got tuned back in January on Dynapacks, the weekend before I left on deployment. It got tuned conservatively to 14 psi, plenty for my wife to handle while I was away. The car drove fine for about a month. One day, out of the blue, it died on the side of the highway. And my wife does not abuse the car... just normal driving in light traffic, and she said it leaned out on the Uego and died.
Fast forward: I came home off deployment in August and started digging into the issue. As of now, I have replaced the fuel pump with a brand new Walbro 255, I pulled the injectors out and had them sent to RC to be cleaned. Injector number 2 was reported as "dripping," it was cleaned, and all 4 tested excellent after the process. I am throwing a check engine light, but my reader reports it as "failing number 2 injector" even after the cleaning.
I replaced the fuel pressure regulator, the fuel filter, the MAF, and have done a boost leak test, to no avail.
When you drive the vehicle, it drives fine up until about 3,000 rpms and roughly 5psi of boost, then it leans out and starts to shudder and bog. I thought maybe it was a tuning issue, so last Saturday I took the Eclipse to a local shop here in Hawaii and Chris from AMS in Chicago put it on the dyno. He couldn't complete a single full out run... tried a few times while he was playing with the settings on the Neo, and then brought it down off the dyno. He said the way the car's running, it seems like the fuel pressure is dropping as the RPMs climb. I don't have a fuel pressure gauge, so I can't verify that theory just yet. After this next paycheck I'll be ordering one and installing it just to see if this really is my issue.
I was wondering if maybe I should test the voltage on the fuel pump, and if so, where do I connect the multimeter leads? Also, should I do the rewire?
(As clarification, during normal acceleration, say from a stop light in first gear, AFR's will go from 13.x to anywhere 16.6 up to 18...blanking out the Uego. At cold idle, the AFR's are 11.0-14.0...at warm idle, AFR's are from 16.5-17.8)
Any input would be greatly appreciated. The car's been down since February and it really is a shame because she's a beast when she runs right! Thanks for your time guys! Any questions feel free to ask, and I'll answer as best I can
. I've pulled the injectors since and inspected them as well, with no cracked or torn seals. It seems as though fuel isn't even getting to the rail at the psi it should be...
