truck turned off
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truck turned off
so i was headed back from a trip today and the truck was running good until i pulled into a store and turned the truck off.. it would not start at all all it would do is crank and crank...well i let it cool down for about 30 min. and i finally started....well we drove it for about another 4 hrs. and i pulled up to a red light and it just turned off....now it wont turn on again so i let it cool down and this time it takes awhile to turn on....and i notice the pressure gauge on the dash takes a while to build up.....and advice...
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i was hoping that wasnit it... i had it replaced about a year ago.... and i blew the heads about 2 days after that so the trucks has been down for that long i just got it running last week..... so could it be anything else
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From: Clearwater
Yes,if they replaced the pump then the fittings are updated and either have the bracket or the one piece discharge fitting so the fittings can't be bad. The other thing that causes what is generally a no-start hot is the dummy plugs in the oil manifold rails. They are towards the front on either side. When the oil is hot, the oil blows by the leak because its so viscous. When its colder the oil is thicker so it can overcome the leak more easily and once its running the pump is generally moving so fast it can overcome any leak.
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ok so i dont understand what is going on i can drive it for a few hours and have no problem but the minute i stop it turns off.. but as long as i stay on the gas it will run...also when it turned off i put a computer on it and checked the icp. as i was starting it i saw the pressure go from 150 to 169 psi but slow... this happpened over a 15 sec. start... also i notice when its cold and i start the truck when it turns on the oil gauge doesnt build pressure right away i have to wait alittle bit for it to show pressure...sorry for the long paragraph, but i need help
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Cargo Master
Joined: Mar 2007
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From: AB/BC
If you are having trouble building and maintaining low pressure oil at low RPM I would think that the oil pressure regulator is tired.The LPOP feeds the HPOP and if the HPOP starves truck doesn't run.Though a HPO leak fits the bill the low pressure problem should be solved first.
Hotshot
Joined: Dec 2003
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From: Stuttgart, Ar
Check the low oil pressure first and see what it is. If that's ok then you have a HPO leak internally somewhere. Maybe one of our good tech's can give you a better explanation of the correct procedure. Remember......the dash gauge only takes about 7 1/2 lbs to read normal AND you can get a LPO pump/cartrige for about $30 bucks.
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Joined: May 2009
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From: Clearwater
ricg, I didn't realize your truck was shutting off at idle. I see you have a model year 04, what is the build date? You could be having a high pressure problem causing the low pressure gauge to build slowly and cause stalls. If it is early 04, you have the early style pump, they have a beebee that can fall out and cause base oil pressure to drop off at idle and cause extended cranks. A quick easy way to eliminate the low pressure system is remove the oil filter, use a long screwdriver to hold down the drain back valve, and have an assistant crank the motor while you look to see if the reservoir is filling up. note: pull the ficm fuse to ensure it won't start. If the reservoir starts filling up right away then more than likely the problem is not in the low oil pressure system.
Hotshot
Joined: Dec 2003
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From: Stuttgart, Ar
That's a late model 04 truck (anything after 9/29?/03) but will have a different HPOP system than the 05's. If you determine that your LPOP is ok then you can air test the HPO system for leaks. I'm also wondering if you replaced the stand pipes that go through the HPO rails on the heads when the gaskets were done. Many times they look fine but will fail anyway. They usually come with the headgasket sets.