I know there has been 101 threads on no start conditions and I read the thread in the tech folder but I need a little direction. Since I've owned the truck, it has always had a little longer turnover than most prior to start. Never been an issue though. Two days ago, started getting worse. Truck will start cold every time but won't fire at all when hot. It's not throwing any codes. With the absence of any CL's, what should be first on my list?

Thanks,

 

Check FICM first then high pressure oil problem? if it's an '03 - early '04 this thread might help:
https://www.ford-trucks.com/forums/s...d.php?t=854667

 

OK, not to hijack my own thread here but I keep blowing the hose out of the boot on the turbo outlet. The boots are only about 6 months old. I bought a new clamp from ford the other day after the 4th time it did it in 2 days. Used hair spray and everything and blew it again on the way to work today. What gives? How do you keep these dam things on?

On the no start issue, I disconnected the ICP sensor and tried to start hot....no good. Will start when temp drops to around 150 degrees. Above that, just turns over. I'm thinking IPR? Any help would be appreciated.



Thanks,

 

I was going to say STC fitting maybe? But I know you just did it....

IPR might be the right direction.

 

You can pull it out, and check the screen for garbage clogging it, or a broken screen, or the screen being pushed back.

 

Did ya replace the dummy plugs and standpipes when you did the STC fitting?

 

I did not replace the dummy plugs and standpipes when I did the job. There didn't appear to be anything wrong with them and this condition didn't exist. You think that could be my issue more so than the IPR?

 

IMO it is more likely to be a leak than the IPR if it is mainly acting up "when hot".

You might want to pull the valve covers and do an air pressure check.

 

Mark,

I will check the voltage at the ICP when hot and ensure I have at least .8 volts.

Can the air psi test be done with the motor cold or does it need to be hot because that's when I'm having my problem?

Also, <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:PunctuationKerning/> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:Compatibility> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> <wontGrowAutofit/> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> </w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" LatentStyleCount="156"> </w:LatentStyles> </xml><![endif]--><!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} </style> <![endif]-->in the "no start" thread, you stated:
If IPR is at 80% while at hot idle, then you have high pressure oil leak, failed pump or a bad ipr valve.
IPR should be around 22-24% at hot idle; up to maybe 30% but that maybe a little too high.

How can I measure this?

Thanks again,

 

what are your reading at hot idel for ICP and IPR

you got it high IPR means leak

Im betting on stand pipes and dummy plugs

05 and up can just about count on STC stand pipes and dummy plugs sooner or later

 

I'm not sure how to measure IPR at hot idle.

 

I use my SGII

what kind of gauges do you have

with being able to see both ICP and IPR you can tell if you have a leak and then air test to try and pinpoint it

 

Benny,

I've got stand alone fuel psi, oil psi, HPOP psi, pyro, boost, and an sct insight that shows me oil temp, coolant temp, volts, trans temp, throttle pos.

No ICP or IPR. When cranking the HPOP psi shows just below the 500 psi mark but that's where it's always read. I do have AE but am not very familiar with it. I've only used it a few times.

 

sounds like its time to break the AE out of the box

your HPO gauge should be the same as ICP

 

I'll do some tests after work and see what I can find out.

Thanks