UNPLUG the harness from the injector, put your V.O.M. meter on OHMS and put the leads accross the two connectors ON THE INJECTOR ,it should read about 11-16 OHMS in most cases, a few are designed to read up to 19 ohms, or as low as 9 ohms ,if its out of that range by a wide margin ITS MORE THAN LIKELY DEFFECTIVE, checking the OHMS reading as a first step will frequently detect a deffective injector, naturally useing your trouble codes , a shop manual and a fuel pressure gauge won,t hurt and a shop scope , or engine analyzing software with a read out to your laptop computer helps and can further isolate the problem, at IDLE speeds placing a finger tip on the side of the injector will usuially allow you to feel it (CLICKING) adding a couple cans of injector cleaner and about a pint of MARVEL MYSTERY OIL to a full tank of fuel can sometimes free a sticky injector that partly clogged, but don,t do it frequantly as its very hard on the CATS and O2 SENSORS if done constantly
notice, the injector resistance is usually stated in the description
Brand: ACCEL
Product Line: ACCEL Fuel Injectors
Part Type: Fuel Injectors
Part Number: ACC-150826
Injector Advertised Flow Rate (lbs/hr): 26 lbs./hr.
Injector Advertised Flow Rate (cc/min): 269.0cc/min
Injector Impedance: 14.4 ohms
Driver Type: 12 V saturated circuit
Overall Height (in): 2.880 in.
Seat to Seat Height (in): 2.270 in.
Manifold O-Ring Outside Diameter (in): 0.573 in.
Fuel Rail O-Ring Outside Diameter (in): 0.574 in.
Outside Diameter (in): 0.943 in.
Injector Plug Style: Bosch/Amp-style
Wiring Harness Included: No
O-Rings Included: Yes
Quantity:
MORE INJECTOR INFO
Like all electrical devices, injectors have an internal resistance to the flow of electricity. The amount of resistance is measured in Ohms, or impedance. The higher the number, the more the resistance. Injectors are either high impedance or low impedance. It's crucial to get the proper type. While high and low impedance injectors may look identical on the outside and fit the same, if they are the wrong type they can fry your ECU, injector resistor pack, or other expensive parts. High impedance injectors are sometimes called "peak and hold" injectors, while the low impedance injectors are often called "saturated injectors." Make sure you get the right type. If you're not sure what you've got, you can check the resistance of your injector with a DMM (digital multi meter) set to measure Ohms. Saturated injectors have a resistance between 10-18 ohms and peak-hold injectors have a resistance around 2-6 ohms.
your corvette was designed to use the 10-18 ohm rated injectors
if the injectors and the fuel rail were disconnected , while you tested the injector function, having removed them from the cars intake manifold temporarily, theres an excellent chance that the wire harness was not correctly plugged into all the injectors and the injectors were not properly grounded, the injectors only open when an electrical pulse caused the internal pindel solenoid to pop open.
ID suggest REPLACING YOUR FUEL FILTER and ADDING A CAN OF INJECTOR CLEANER to your next tank of fuel as a first step, and checking for loose injector O-rings and vacuum leaks once the injectors are re-installed,
http://garage.grumpysperformance.com/index.php?threads/locating-vacume-leaks.882/#post-45944
ID sure verify the OHMS resistance on EACH AND EVERY INJECTOR, and GET ANY CLEANED THAT WERE SIGNIFICANTLY
DIFFERENT READINGS
http://wikicars.org/en/Fuel_injection
http://garage.grumpysperformance.com/index.php?threads/calculate-fuel-injector-size.1200/#post-31258
http://repairpal.com/OBD-II-Code-P0171-and-P0174
http://garage.grumpysperformance.com/index.php?threads/changing-fuel-injectors.3429/#post-9084
http://garage.grumpysperformance.com/index.php?threads/fuel-injector-resistance.607/#post-806
http://users.erols.com/srweiss/tableifc.htm
http://www.conleyracing.com/article_fuelinjectors.htm
http://garage.grumpysperformance.com/index.php?threads/fuel-pressure-drops.12123/#post-58318
notice, the injector resistance is usually stated in the description
Brand: ACCEL
Product Line: ACCEL Fuel Injectors
Part Type: Fuel Injectors
Part Number: ACC-150826
Injector Advertised Flow Rate (lbs/hr): 26 lbs./hr.
Injector Advertised Flow Rate (cc/min): 269.0cc/min
Injector Impedance: 14.4 ohms
Driver Type: 12 V saturated circuit
Overall Height (in): 2.880 in.
Seat to Seat Height (in): 2.270 in.
Manifold O-Ring Outside Diameter (in): 0.573 in.
Fuel Rail O-Ring Outside Diameter (in): 0.574 in.
Outside Diameter (in): 0.943 in.
Injector Plug Style: Bosch/Amp-style
Wiring Harness Included: No
O-Rings Included: Yes
Quantity:
MORE INJECTOR INFO
Like all electrical devices, injectors have an internal resistance to the flow of electricity. The amount of resistance is measured in Ohms, or impedance. The higher the number, the more the resistance. Injectors are either high impedance or low impedance. It's crucial to get the proper type. While high and low impedance injectors may look identical on the outside and fit the same, if they are the wrong type they can fry your ECU, injector resistor pack, or other expensive parts. High impedance injectors are sometimes called "peak and hold" injectors, while the low impedance injectors are often called "saturated injectors." Make sure you get the right type. If you're not sure what you've got, you can check the resistance of your injector with a DMM (digital multi meter) set to measure Ohms. Saturated injectors have a resistance between 10-18 ohms and peak-hold injectors have a resistance around 2-6 ohms.
your corvette was designed to use the 10-18 ohm rated injectors
if the injectors and the fuel rail were disconnected , while you tested the injector function, having removed them from the cars intake manifold temporarily, theres an excellent chance that the wire harness was not correctly plugged into all the injectors and the injectors were not properly grounded, the injectors only open when an electrical pulse caused the internal pindel solenoid to pop open.
ID suggest REPLACING YOUR FUEL FILTER and ADDING A CAN OF INJECTOR CLEANER to your next tank of fuel as a first step, and checking for loose injector O-rings and vacuum leaks once the injectors are re-installed,
http://garage.grumpysperformance.com/index.php?threads/locating-vacume-leaks.882/#post-45944
ID sure verify the OHMS resistance on EACH AND EVERY INJECTOR, and GET ANY CLEANED THAT WERE SIGNIFICANTLY
DIFFERENT READINGS
http://wikicars.org/en/Fuel_injection
http://garage.grumpysperformance.com/index.php?threads/calculate-fuel-injector-size.1200/#post-31258
http://repairpal.com/OBD-II-Code-P0171-and-P0174
http://garage.grumpysperformance.com/index.php?threads/changing-fuel-injectors.3429/#post-9084
http://garage.grumpysperformance.com/index.php?threads/fuel-injector-resistance.607/#post-806
http://users.erols.com/srweiss/tableifc.htm
http://www.conleyracing.com/article_fuelinjectors.htm
http://garage.grumpysperformance.com/index.php?threads/fuel-pressure-drops.12123/#post-58318
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