truck was towed in .... no start.
IPR 84.75
ICP 22 PSI***** no BIAS ICP
Ficm SYNC yes
ficm MAIN 48.00+

HPO oil leak test=no leak
replaced HPOP and oil cooler changed oil and filter motorcraft filter NO WIX.

still no start pulled valve covers visual inspection all good
pulled HPOP again checked STC fitting and branchline for cracks towards base= good

what im a missing? i want to beat my head against 6.0 btw im a surporter of 6.0 seen it all well at least i thought so!

 

need help bumping to top of post

 

What were the symptoms leading up to the 'no start'?

 

What year model? Any codes?

FWIW--you could have simply gotten a bad HPOP out of the box. It's all to common for my taste.

 

original syn was limited power then died while towing with trailer.... got towed to me . codes were CKP code replaced it . the codes that spoke A no Start P2290 and P2291.

 

NPCC... i thought so to about out of box HPOP being bad so i had warrantied still same results

 

How long did you crank on it to get it to start after the repair? What is the ICPV's at KOEO? Have you tried to start it with the ICP unplugged? What did the IPR screen look like after attempting to start it after the oil cooler was done?

 

CKP code was from long crank, no start. No need to replace the sensor.

Need to know what year truck to help diagnose further.

Josh

 

Did you change the ipr screen? If not, did you clean the ipr screen. How careful were you keeping lint out of the oil cooler sump. It can clog the ipr screen. Always change or clean the ipr screen when doing an oil cooler. Then be surgically clean when changing the oil cooler.

I assume the gages you listed were while cranking. Your ipr is high ... meaning the ipr valve is commanded almost closed, yet still no hoop. Get the ipr voltage apt KOEO to see if the ipr could be bad. If it is, that could have been the problem all along.

If the ipr checks out, pull it and check the screen. There have been many posts reporting ipr damage from clogging the ipr screen and blowing the screen.

 

Ps, refill the last three or four quarts of oil through the oil filter housing after an oil cooler job and it will refill most of the up oil system and start up faster. You may have to hold the oil return port closed to keep it from draining into the engine. Others need to come in here to confirm this.

 

Im thinking IPR Too Pull N Check it

Definatly Bit a Few folks doing an Oil Cooler

 

So...what year model is it? That will make a difference in the direction of diagnosing this truck.

 

The HPOP wasn't It If he Cranked Long enough


Do you have LPO??

 

Maybe it Syncs but wont Fire until 500 ICP

 

Can you clarify how you did the hpo leak test? Over 80% ipr is the only number needed sofar. 65-70% should yield around 3000 icp. if it's the ipr, a proper leak test should yield no change when the ipr is commanded closed.

Hopefully Benny didn't hit it on the head with his question about having lpo. That would be my VERY FIRST thing to check,, remote crank it and watch for gurgling oil in the oil filter housing. You can hold the black, spring loaded, button in the bottom of the housing to see how much flow, but just cranking it will flow enough oil to rule out a catastrophe.