SD HPOP install write up. Part 1
New User
Joined: May 2006
Posts: 24
Likes: 0
From: San Antonio, Tx
I followed this write up, got the HPOP off, re-sealed it and got everything back together. Before started right up, now it won't start.... any ideas. Ifilled fuel bowl back to top, and hpop reservoir is full. tried with icp plugged and unplugged.
Hotshot
Joined: Feb 2009
Posts: 10,408
Likes: 75
From: Plankinton, SD
How much have you cranked it? It can take quite a bit of 15-20 second cranking intervals to get it to fire. Are the batteries fully charged? What do you mean you resealed it, new orings? Did you plug the ipr back in?
New User
Joined: May 2006
Posts: 24
Likes: 0
From: San Antonio, Tx
yeah replaced all orings, and oring metal housing gasket as well. Cranked several times for 30-45 seconds, battery's started getting weak, so I've got them charging now. IPR is pluged in and intake is sucking air while cranking. I heard its hell bleeding air from fuel system. Shoud the ICP be unplugged? could it be air in the oil lines from when I had the hpop oil lines disconnected. I know I saw the tach jumping. Maybe Fuel has air in system? any other way of bleeding it besides cranking?
Hotshot
Joined: Feb 2009
Posts: 10,408
Likes: 75
From: Plankinton, SD
You definitely have air in the oil lines and fuel lines, that is why it takes so much cranking. It will take sometimes upwards of 200 miles to get the air all worked out and starting back to normal. I'd leave everything plugged in, recheck your hpop res. and fuel bowl level, and keep cranking in short bursts and see what happens.
Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
yeah replaced all orings, and oring metal housing gasket as well. Cranked several times for 30-45 seconds, battery's started getting weak, so I've got them charging now. IPR is pluged in and intake is sucking air while cranking. I heard its hell bleeding air from fuel system. Shoud the ICP be unplugged? could it be air in the oil lines from when I had the hpop oil lines disconnected. I know I saw the tach jumping. Maybe Fuel has air in system? any other way of bleeding it besides cranking?
How tight did you get the bolt for the pump gear? Might be worth checking that the HPOP gear is spinning and not slipping.
Double check that the IPR is plugged in and clipped. Make sure the tin nut is snug on the IPR also.
Make sure all connections for the fuel bowl harness are plugged in. If the big plug on the passenger side of the fuel bowl for the fuel bowl harness is not plugged in, the truck will not start.
Sometimes it helps to keep the injectors from firing while cranking the engine so they do not use any HPO and they do not fire the fuel. To do this you need to either unplug the CPS, unplug the UVCH, or take out fuse# 9 or #22 IIRC. Try this after you double and triple check that all your connections are plugged in and tight.
New User
Joined: May 2006
Posts: 24
Likes: 0
From: San Antonio, Tx
Ok 427 Fordman, thanks for the help. I'll finish getting batteries charged up and get to cranking some more. any idea on the ICP sensor? plugged or unplugged?
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New User
Joined: May 2006
Posts: 24
Likes: 0
From: San Antonio, Tx
The only way to bleed the HPO or fuel system is to crank it or run it.
How tight did you get the bolt for the pump gear? Might be worth checking that the HPOP gear is spinning and not slipping.
Double check that the IPR is plugged in and clipped. Make sure the tin nut is snug on the IPR also.
Make sure all connections for the fuel bowl harness are plugged in. If the big plug on the passenger side of the fuel bowl for the fuel bowl harness is not plugged in, the truck will not start.
Sometimes it helps to keep the injectors from firing while cranking the engine so they do not use any HPO and they do not fire the fuel. To do this you need to either unplug the CPS, unplug the UVCH, or take out fuse# 9 or #22 IIRC. Try this after you double and triple check that all your connections are plugged in and tight.
How tight did you get the bolt for the pump gear? Might be worth checking that the HPOP gear is spinning and not slipping.
Double check that the IPR is plugged in and clipped. Make sure the tin nut is snug on the IPR also.
Make sure all connections for the fuel bowl harness are plugged in. If the big plug on the passenger side of the fuel bowl for the fuel bowl harness is not plugged in, the truck will not start.
Sometimes it helps to keep the injectors from firing while cranking the engine so they do not use any HPO and they do not fire the fuel. To do this you need to either unplug the CPS, unplug the UVCH, or take out fuse# 9 or #22 IIRC. Try this after you double and triple check that all your connections are plugged in and tight.
Ok tatsch, I'll double check everything, I torqued the gear to 95ft/lbs as I've read in different forums. I'll unplug and replug everything and give it a shot. thanks
Senior User
Joined: Jan 2004
Posts: 475
Likes: 0
From: Pugetopolis
Something to check:
I noticed when I put my IPR back together the wiring plug was sort of out of place and had been that way for a while. I was tough to get back on properly and I am sure it's still goobered a bit. If the IPR is not connected to the wiring properly, it will not start.
I noticed when I put my IPR back together the wiring plug was sort of out of place and had been that way for a while. I was tough to get back on properly and I am sure it's still goobered a bit. If the IPR is not connected to the wiring properly, it will not start.
Lead Driver
Joined: Apr 2011
Posts: 8,259
Likes: 346
From: Northern California
So after replacing the starter I figured I better go double check everything.
Turned out that even though I had the bolt that holds the gear on tight. The gear itself was not actually seated properly on the shaft.
So I removed the bolt, realigned the pulley and revolted the pulley onto the shaft.....this time I could actually feel the pulley cinching down on the pump shaft with each turn on the ratchet. Whe. It was finally fully seated I toured the bolt to spec.
Fired right up.
Getting the pulley ( gear ) on the pump shaft was tricky on mine.
Worth checking out on yours
Camo
Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
I cranked mine untill I finally Burnt the starter up.
So after replacing the starter I figured I better go double check everything.
Turned out that even though I had the bolt that holds the gear on tight. The gear itself was not actually seated properly on the shaft.
So I removed the bolt, realigned the pulley and revolted the pulley onto the shaft.....this time I could actually feel the pulley cinching down on the pump shaft with each turn on the ratchet. Whe. It was finally fully seated I toured the bolt to spec.
Fired right up.
Getting the pulley ( gear ) on the pump shaft was tricky on mine.
Worth checking out on yours
Camo
So after replacing the starter I figured I better go double check everything.
Turned out that even though I had the bolt that holds the gear on tight. The gear itself was not actually seated properly on the shaft.
So I removed the bolt, realigned the pulley and revolted the pulley onto the shaft.....this time I could actually feel the pulley cinching down on the pump shaft with each turn on the ratchet. Whe. It was finally fully seated I toured the bolt to spec.
Fired right up.
Getting the pulley ( gear ) on the pump shaft was tricky on mine.
Worth checking out on yours
Camo
New User
Joined: May 2006
Posts: 24
Likes: 0
From: San Antonio, Tx
Well, no luck. I tried cranking it several times for 30 seconds each time and didnt start. Today I took the reservoir off and checked the gear. It looked good, but I took the bolt out and checked it. It appeared that it was seated all the way. Never the less I seated it all the way again and torqued the bolt down to 95lbs again and put all back together again. Only problem is batteries are weak again. Charging them again and gonna try cranking on it tomorrow.
Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
Well, no luck. I tried cranking it several times for 30 seconds each time and didnt start. Today I took the reservoir off and checked the gear. It looked good, but I took the bolt out and checked it. It appeared that it was seated all the way. Never the less I seated it all the way again and torqued the bolt down to 95lbs again and put all back together again. Only problem is batteries are weak again. Charging them again and gonna try cranking on it tomorrow.
Also, how old are your batteries? I worked on a truck about a month ago that wouldn't start after it got hot one day and wouldn't start cold either. I pulled the IPR and changed the o-rings thinking that's what caused it not to restart, but it still wouldn't start after I got done. The batteries were weak, but we had a charger on each battery. It sounded like it cranked pretty good, but still wouldn't start. Jumped it off with my truck and it started right up, no problem. So you might try jumping it. Could be weak batteries not getting charged enough and it won't spin fast enough.