fuel injector question
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From: In the fast lane from LA to Tokyo...
The shop where I work part time at has a protocol in place for injectors......
1. Before anything else they are cleaned and visually inspected
2. Each injector is then tested for leakage
3. Coil resistance is then checked along with opening and closing of the injector
4. All that pass the first three steps are then flow tested
So to answer your question a stuck injector should be found before the flow test....
But that's at this shop.....other shops may have their own proceedures....
1. Before anything else they are cleaned and visually inspected
2. Each injector is then tested for leakage
3. Coil resistance is then checked along with opening and closing of the injector
4. All that pass the first three steps are then flow tested
So to answer your question a stuck injector should be found before the flow test....
But that's at this shop.....other shops may have their own proceedures....
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From: New York
Thanks for taking the time to respond. I asked this because I recently took my 05 150 into Ford Service Specifically for a diagnostic of injectors 5 & 6 this is what they say they did:
"Customer states check engine light on. Check 5 & 6 injector verify CEL on checked and found codes p0300, p0305, p0306 and p0316. Checked mode 6 data found misdata on 3 cylinders; 2,5,6. Checked injector flow found all injectors even flow.
Vehicle needs 2 coils, plugs and boots. Customer declined repairs owner will repair."
And I'm right back where I started with P0305 and CEL.
"Customer states check engine light on. Check 5 & 6 injector verify CEL on checked and found codes p0300, p0305, p0306 and p0316. Checked mode 6 data found misdata on 3 cylinders; 2,5,6. Checked injector flow found all injectors even flow.
Vehicle needs 2 coils, plugs and boots. Customer declined repairs owner will repair."
And I'm right back where I started with P0305 and CEL.
Technical Article Contributor
Joined: Apr 2009
Posts: 10,697
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From: In the fast lane from LA to Tokyo...
Is this happening since you changed your plugs?
If so go through and check connections to the cops and injectors....
http://www.troubleshootmyvehicle.com..._testing_1.php
If so go through and check connections to the cops and injectors....
http://www.troubleshootmyvehicle.com..._testing_1.php
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From: New York
Is this happening since you changed your plugs?
If so go through and check connections to the cops and injectors....
http://www.troubleshootmyvehicle.com..._testing_1.php
If so go through and check connections to the cops and injectors....
http://www.troubleshootmyvehicle.com..._testing_1.php
Yes to Dielectric grease.
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From: In the fast lane from LA to Tokyo...
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You can check for a leaking injector by pulling them, placing a rag under the rail and turning the key on. If you suspect on is sticking open, better not delay getting it checked out as it will hydrolock the engine.
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Jim
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From: New York
The shop where I work part time at has a protocol in place for injectors......
1. Before anything else they are cleaned and visually inspected
2. Each injector is then tested for leakage
3. Coil resistance is then checked along with opening and closing of the injector
4. All that pass the first three steps are then flow tested
So to answer your question a stuck injector should be found before the flow test....
But that's at this shop.....other shops may have their own proceedures....
1. Before anything else they are cleaned and visually inspected
2. Each injector is then tested for leakage
3. Coil resistance is then checked along with opening and closing of the injector
4. All that pass the first three steps are then flow tested
So to answer your question a stuck injector should be found before the flow test....
But that's at this shop.....other shops may have their own proceedures....
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From: New York
I'm doing this now.
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Joined: Apr 2005
Posts: 893
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From: New York
another ?: how hard is it to pull up the fuel rail? I have the bolts off and nothing budging. I also have the zip ties on already and they aren't on anything else.
Should I de pressurize before doing this?
Should I de pressurize before doing this?
Last edited by nu-supercrew; Apr 20, 2012 at 01:18 PM.
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