SasaniFab
Proven Member
- 2,433
- 782
- Dec 1, 2013
-
Mexico,
Connecticut
1). Any boost, vac, or exhaust leaks?
Boost leak tested 5psi above your max boost with no leaks?
Car was boost leak verified to 30psi
2). Verified mechanical timing?
yes
3). Verified base timing?
yes
4). Ignition system
COP or Stock Coil:stock
Wire brand and Age: ngk blue
Spark Plug brand, type and Gap: ngk 7 heat range
5). Motor health (Compression Test)
Cylinder 1: 155
Cylinder 2:155
Cylinder 3:155
Cylinder 4:155
6). Performed basic throttle body adjustments?
Idle Switch:yes
Throttle Cable:yes
TPS:.63 volts
BISS:yes
7). Compression ratio
8.3:1
8). Any known bad sensors or brittle wiring?
no known, need to check rewire connections at pump
9). Any DTC/CEL codes?
no
10). Electrical system
Car off (not running):
Car running:
11). Base fuel pressure and injector values
Base Fuel Pressure: stock 1g
Injector Size (cc/min): 1000 pte
12). Properly calibrated and configured wideband sensor
Sensor Brand: lm2
Calibration Date: last month
13). Type of fuel
Type: ms100 vp
Percent of Ethanol:meth injection 50/50
14). Watched ECMlink how-to videos?yes
Ok so
I just wanted to start by sharing my observations over the past few months. As some of you may know i recently built my first motor(complete) last week I happened to look down at my log and saw that my injector duty at 145% this was with a walbro 450 and pte 1000cc injectors at 20psi on pump. My last motor never had this issue, i added a log to show the difference between the two. At idle my injector duty hovers around 20%. At the shop yesterday I completely tore apart my fuel system and didnt find anything in fact it was spotless. What i did find was some of the wires leading to the pump from the rewire frayed underneath the heatshrink tubing. I made a repair and it didnt change anything. Now before i started my new motor I had to replace my cam position sensor because it went bad, it was fine when it was removed. I ordered one from rock auto and the car fired up without hesitation. Looking at the log currently at idle the INJON stays at 24.58ms and does not fluctuate. On the old motor the injon would fluctuate. Its almost like the injectors are stuck open? Doesnt the cam position sensor dictate when the injectors fire depending on cam position?Any ideas would be appreciated
Boost leak tested 5psi above your max boost with no leaks?
Car was boost leak verified to 30psi
2). Verified mechanical timing?
yes
3). Verified base timing?
yes
4). Ignition system
COP or Stock Coil:stock
Wire brand and Age: ngk blue
Spark Plug brand, type and Gap: ngk 7 heat range
5). Motor health (Compression Test)
Cylinder 1: 155
Cylinder 2:155
Cylinder 3:155
Cylinder 4:155
6). Performed basic throttle body adjustments?
Idle Switch:yes
Throttle Cable:yes
TPS:.63 volts
BISS:yes
7). Compression ratio
8.3:1
8). Any known bad sensors or brittle wiring?
no known, need to check rewire connections at pump
9). Any DTC/CEL codes?
no
10). Electrical system
Car off (not running):
Car running:
11). Base fuel pressure and injector values
Base Fuel Pressure: stock 1g
Injector Size (cc/min): 1000 pte
12). Properly calibrated and configured wideband sensor
Sensor Brand: lm2
Calibration Date: last month
13). Type of fuel
Type: ms100 vp
Percent of Ethanol:meth injection 50/50
14). Watched ECMlink how-to videos?yes
Ok so
I just wanted to start by sharing my observations over the past few months. As some of you may know i recently built my first motor(complete) last week I happened to look down at my log and saw that my injector duty at 145% this was with a walbro 450 and pte 1000cc injectors at 20psi on pump. My last motor never had this issue, i added a log to show the difference between the two. At idle my injector duty hovers around 20%. At the shop yesterday I completely tore apart my fuel system and didnt find anything in fact it was spotless. What i did find was some of the wires leading to the pump from the rewire frayed underneath the heatshrink tubing. I made a repair and it didnt change anything. Now before i started my new motor I had to replace my cam position sensor because it went bad, it was fine when it was removed. I ordered one from rock auto and the car fired up without hesitation. Looking at the log currently at idle the INJON stays at 24.58ms and does not fluctuate. On the old motor the injon would fluctuate. Its almost like the injectors are stuck open? Doesnt the cam position sensor dictate when the injectors fire depending on cam position?Any ideas would be appreciated
