High Pressure Injectors and rail issue
10-04-23, 04:11 PM
#1
8th Gear
Thread Starter
High Pressure Injectors and rail issue
I was replacing my heater exchanger "Valley Plate", while desconncting the high pressure injectore connectors 4 of them broke due to plastic beign britle, I went and blindly bought 8 BECK/ARNLEY injectors and installed them. However I did not know they have a spefic color connector. Question.
1. Does it matter the color of the connector ring (black, browm, yellow and green? does the car computer determents the timing of the injector ?
2. Ebay and amazon sells all 8 same color connector ring, what's the difference?
3. Does anyone knows the high pressure rail bolt torque specs?
Please help
1. Does it matter the color of the connector ring (black, browm, yellow and green? does the car computer determents the timing of the injector ?
2. Ebay and amazon sells all 8 same color connector ring, what's the difference?
3. Does anyone knows the high pressure rail bolt torque specs?
Please help
10-04-23, 05:43 PM
#2
Lead Lap
iTrader: (1)
You need specific injectors. Go to any Lexus parts site and get the OEM part number. Just because seller guarantees exact fit doesn't mean they will work. The car will likely throw codes. This is a complex car with multiple computers that often doesn't do well with aftermarket parts. Suggest either OEM or Denso. Maybe another member can suggest other brands that are known to be compatible, possibly Beck Arnley are fine in the right configuration. You may also potentially need Tech Stream software to initialize the injectors. I don't know for certain.
Last edited by swfla; 10-04-23 at 05:47 PM.
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maynor (10-04-23)
10-04-23, 07:15 PM
#3
Most frequent combo is 4 black + 4 brown.
1. yes
2. chinese knockoffs
3. yes, but can't do now, may add later
1. yes
2. chinese knockoffs
3. yes, but can't do now, may add later
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maynor (10-04-23)
10-04-23, 10:16 PM
#4
8th Gear
Thread Starter
Fuel injectors
Thank you for the advice,
I checked the old injectors and they all have a brown ring around the connector, I will torque the rail at 25 ft since I cannot find any information about this rail torque specs, and reassemble everything back. I’ll keep updating.
I checked the old injectors and they all have a brown ring around the connector, I will torque the rail at 25 ft since I cannot find any information about this rail torque specs, and reassemble everything back. I’ll keep updating.
10-05-23, 04:43 AM
#5
Torque:
21 N*m { 214 kgf*cm, 15 ft.*lbf }
21 N*m { 214 kgf*cm, 15 ft.*lbf }
The following 2 users liked this post by Boykie:
maynor (10-05-23),
Nospinzone (10-06-23)
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10-05-23, 06:04 PM
#8
Should be okay.
10-06-23, 03:14 PM
#9
8th Gear
Thread Starter
Misfire issues
After putting everything back, car ran rough for 10 seconds and then it even out nicely, I took it for a spin and starting to shake and running rough.. Check engine came up with , P0300, P0305,P0307. Maybe are the injectors or it needs tuning.. Please help
10-06-23, 04:00 PM
#10
Lead Lap
iTrader: (1)
Those codes indicate cyl 5 and 7 misfires. It could be fuel, spark or a number of other reasons. Did you use the random injectors that you had purchased? What color band? How was the car running before you exchanged the valley plate? Not sure what you meant as valley plate is usually just resealed and not replaced due to it leaking coolant. What sealant did you use? Mileage and year? Please answer each of these questions as the answer to each matters.
10-06-23, 04:16 PM
#11
Were the harness locking tabs on the connectors in good shape when you put things back together?
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swfla (10-06-23)
the same codes will appear if there's a problem with coils or their harness connectors also, lots of people seem to break those.
10-07-23, 07:08 AM
#15
Pole Position
I would take used OEM injectors over new non-OEM ones any time. You need to check if misfires limited cylinders 5 and 7 or the cylinders have the same issue using an OBD scanner.
Last edited by Anfanger; 10-07-23 at 07:34 AM.
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swfla (10-07-23)