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Old 01-03-2014, 01:13 PM
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HPOP Air Test Questions

I have a no start issue that I believe is HPO related.

I did an air test on my late 04 6.0L but I've got some questions. First of all, when I pulled the ICP to install the air plug, I noticed oil on the tip of the ICP. My question is, is it normal to have any air at all coming from the oil fill pipe on the passenger side? I don't hear any leaks, but there is a slight escape of air from the oil fill tube with the camp removed. Is this normal or is this indicative of a HPOP or other issue?

Also, I'm towing it in to have codes pulled next week. If I do have a failed HPOP or ICP, what codes should I look for?
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Old 01-03-2014, 02:59 PM
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Try this first:
Unplug the ICP spray some brake clean or carb cleaner into the pigtail plug for the ICP if there is any oil in it. Let dry and then try starting it.

If you are leaking oil out of your ICP it's bad and will cause a no start issue.
No codes will be from HPOP put your ICP back in and with wiring unplugged start it up.
I hope for your sake

Last edited by mhatlen; 01-03-2014 at 03:08 PM.
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