Injector problem - Ford Powerstroke Diesel Forum
 
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post #1 of 5 Old 01-28-2020, 02:19 PM Thread Starter
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Injector problem

So my truck stalled and would not start it sat for a week until I got a new phone and CPS still wouldn't start until I got the gas rag it started but there is a lot of smoke and runns a little weird
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post #2 of 5 Old 01-29-2020, 03:18 AM
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What color is the smoke?

Did it smoke while cranking? Whats your fuel pressure? Is the HPOP full before and after cranking?

Are the valve cover connections good? Any burnt connectors? Any oil in the ICP connector?

Few things to check before saying injectors.
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post #3 of 5 Old 01-29-2020, 04:03 AM Thread Starter
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Originally Posted by White95f250 View Post
What color is the smoke?

Did it smoke while cranking? Whats your fuel pressure? Is the HPOP full before and after cranking?

Are the valve cover connections good? Any burnt connectors? Any oil in the ICP connector?


Few things to check before saying injectors.
The smoke is white it did smoke while cranking I checked the connection the icp and the hpop they are fine
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post #4 of 5 Old 01-29-2020, 05:59 AM
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Good, at least the injectors are firing.

I would then make sure your glow plug relay is working. You can check resistance of the glow plugs to see if they are good.
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post #5 of 5 Old 01-29-2020, 09:49 AM
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For checking the injector/glowplug wiring: From each valvecover gasket connection's outermost pins (2 per connector) to ground you should get 0.1 to 2 ohms (indicates good plug and wiring). From each valvecover gasket connection's center pin to each immediately adjacent pin, you should get around 3 ohms (indicates good injector solenoid and wiring). You should not get any continuity from any of the outer pins to the 3 inner pins (indicates no shorts between injector and glowplug wiring). You should also get 0 to 1 ohms from each of the external harness connectors outer pins back to the Glowplug Relay's large terminal on the GP side (indicates good wiring from external connections back to the relay).

To check the glowplug relay (GPR), measure the voltage drop across the GPR's large terminals. While the GPR is active (up to 1.5 to 2 minutes after the key is turned to Wait-to-Start) put your meter leads on the large terminals (one lead on one large terminal and the other lead on the other large terminal). The measures how much voltage is being "lost" across the relay. A reading of 0.3V or more indicates a bad relay. Also, check the relay’s control wires (smaller wires) disconnected from the relay for battery voltage at the Red/Light Green striped wire and ground at the Purple/Orange striped wire (check both when the key is turned to Wait-to-Start).

Cheers!

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