Got A Problem No Start

[windrunner408]

Ok well I am restoring from my head stud install and went to crank the truck for the first time. I had the Edge CTS on and was watching ICP and FICM voltage and I had my little malibu supporting the batteries with jumper cables. Well I started cranking and ICP read 0 and FICM voltage was 49V and after cranking for about 30 seconds to a minute it fired up. ICP started at 0 and I could watch it build and it built to above 200psi and then it fired right up and was running great. Well I had an oil leak on my oil cooler delete that required me to shut the truck off that I had to attend to. Well after tightening the fitting down I went back to try and start the truck again and it was like I never started it before and I had to build ICP all over again and it would get up to just over 200 psi but still would not fire. Any ideas?? I am a total loss and can only think that it must be that my batteries are just not quite fully charged enough to spin the motor fast enough to build the ICP up enough to start but I dont know. When I did try it a second and third time ICP would only get just to 200 psi and on the third time it was like 190-195psi and FICM voltage was 48.5Vs which would indicate a dying battery. So I am thinking that I just need to get my batteries freshened up and then ICP will get to like 225psi which I think is probably required to start. Any insight would be greatly appreciated.

[npccpartsman]

How long did it run the first time and how long did you crank on the last attempts??? You can have air in the HPO system for a while and it will cause long cranks even after it's run for a few minutes. It takes a while to get the air out. Charge your batteries fully and try again. If it still isn't starting then air test it for an HPO leak. It actually takes a minimum 500 psi for your truck to crank.

[windrunner408]

Well when I got it to start, I ran it for maybe 5 minutes at most but I saw I had a low pressure oil leak and needed to fix it so I shut the truck off. Nevertheless, while it was idling ICP pressure was at like 830 psi or so. When I did my second and third attempts I cranked for probably a minute or so each time. Each attempt only allowed the ICP to get like I said to 200-210 at most and oscillate there. I am inlcined to think that it is just my batteries are not strong enough to spin the motor fast enough to get the ICP up enough to start the truck but wanted to run it past everyone and see what they thought it was. I say this because I watched the ICP build right up the first time like it was its job and it fired right up. I would say that it is more likely my batteries are not quite charged than that an oring failed in my HPO system. Hope this helps.

[PerformanceMachineMFG]

If it has an air pocket, it could take some time to get it back started. Chances are thats all it is since it ran fine previously.

[windrunner408]

Thats what I'm thinking. I ran across a guy on here about a couple of months ago that was unable to get his truck to start and it was because he did have a bad seal or something of the sort around an injector but he was only able to get his ICP up to like 50 psi tops. Thanks for the input.

[PerformanceMachineMFG]

Any update on this?

- Fred

[windrunner408]

No update yet. I have to get my buddy to loan me his charger and I have to wait for my new fittings to come in. Should have something by the end of the week. The guys over on powerstroke nation think that it could be my IPR valve. As in like maybe I sucked in some debris or dirt and cause the screen to break and the IPR valve isnt functioning properly. While I am not ruling out any possiblities, I have to say that initially I feel that this is unlikely due to the fact that the truck did in fact start and I am hoping that it just isnt being spun fast enough to build the ICP up enough to start due to the batteries not being fully charged. Nevertheless, they are also saying that it requires like 500 psi to start and I can say beyond a shadow of a doubt that the ICP reading on my insight was NOT 500 psi but just greater than 200 when it did start so therefore I dont know how accurate the 500 psi number is. Any ideas??

[windrunner408]

So I have a question about pulling the IPR valve. Can it be pulled with the turbo on?? I have the socket and can get it on but am having trouble turning the valve loose because I cant move my socket due to there not being enough space. I really hate to pull the turbo and everything off just to get to it but will do so if I have to. Any mechanic tricks???

[NYC F-350]

Extensions and universal joints............... or arms of spaghetti

[windrunner408]

Got ya. It seems like it is designed to be pulled without pulling the turbo but just want to make sure I am not trying to do something that is impossible and I end up waisting my time.