7.3 hard start, stalling, oil on ground
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Freshman User
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7.3 hard start, stalling, oil on ground
I have an early build 1999 7.3 that has been difficult to start last couple of days. Oil pressure gauge stays at the bottom initially then kicks up and truck starts but will soon stall. So I check the oil, nothing shows on the stick. Looked underneath and it's losing oil from somewhere. Last three places I've parked each show paper plate size oil pool. I left the truck at work until I can be sure no damage has been done internally ( I don't know how I'll know that ).
Can I assume that only enough oil has been lost that it won't run without stalling?
Where can I be losing oil from? leaves a pool with two trails of oil.
Thanks
Can I assume that only enough oil has been lost that it won't run without stalling?
Where can I be losing oil from? leaves a pool with two trails of oil.
Thanks
Lead Driver
Joined: Jun 2007
Posts: 7,760
Likes: 27
From: Hampton, Maryland.
There are lots of places you could be losing oil from. Lots of o-rings on the top. The good thing about the way the fuel system works on these trucks, they use the engine oil to drive the injectors. If you lose too much oil, there isn't enough to drive them and it won't start or it stops running, but it hasn't lost enough oil to do damage to the engine.
The first thing to do in order to investigate an oil leak, is to get the engine clean. So refill the oil and get the truck running and get it home. let it cool down. Most recommend soaking the engine down with simple green, which I have used in the past as well. Cover the alternator and power steering reservoir with a plastic bag. Cover everything really well with the Simple Green (engine cold) and let it sit for 10-15 minutes. Use a garden hose, DO NOT USE A PRESSURE WASHER, and gently rinse everything off, then start the truck and look for where the oil is leaking from. It should become obvious where it is flowing from after that. Come back here with pictures and a description and we can help you repair it.
Good luck.
The first thing to do in order to investigate an oil leak, is to get the engine clean. So refill the oil and get the truck running and get it home. let it cool down. Most recommend soaking the engine down with simple green, which I have used in the past as well. Cover the alternator and power steering reservoir with a plastic bag. Cover everything really well with the Simple Green (engine cold) and let it sit for 10-15 minutes. Use a garden hose, DO NOT USE A PRESSURE WASHER, and gently rinse everything off, then start the truck and look for where the oil is leaking from. It should become obvious where it is flowing from after that. Come back here with pictures and a description and we can help you repair it.
Good luck.
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I had replaced the glow plug relay about 1 - 2 months ago, there was some oil dampness in the valley along with a bunch of shredded mouse housing material. I evicted the squatters and the oil didn't seem to be in excess. My mechanic didn't seem worried about it.
In March I had the oil pan replaced which meant the motor was pulled and inverted, some oil may have come to settle in the valley once up-righted?
All seals and anything that could be replaced while the motor was out was done and has been dry ever since.
I replaced the oil filter right before Thanksgiving and topped off the oil.
That's the extent of recent work.
What does it mean to have oil in the valley?
Thanks
In March I had the oil pan replaced which meant the motor was pulled and inverted, some oil may have come to settle in the valley once up-righted?
All seals and anything that could be replaced while the motor was out was done and has been dry ever since.
I replaced the oil filter right before Thanksgiving and topped off the oil.
That's the extent of recent work.
What does it mean to have oil in the valley?
Thanks
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Freshman User
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thanks HK
unfortunately I can't get to it to do anything since it's Christmas and have nowhere to soak and rinse with hose cuz it's 15 below zero, snowing and blowing.
I'll be back asap
Merry Christmas!!!!!!
unfortunately I can't get to it to do anything since it's Christmas and have nowhere to soak and rinse with hose cuz it's 15 below zero, snowing and blowing.
I'll be back asap
Merry Christmas!!!!!!
Cargo Master
Joined: Aug 2009
Posts: 2,137
Likes: 13
From: Glendive, MT
A leak that bad should not be too hard to find even without cleaning it first. Start looking at the front of the valley and work your way back. Look for leaks from the HPOP pump and hoses to the heads. There are plugs in the heads, one for each cylinder. On the drivers side the IPC is in the front one, the high pressure supply hose in the second, then two more plugs as you go back. The passenger side has the same row of plugs with the high pressure supply in one of them. If you don't find it there, look deeper and farther back. A mirror or cellphone video is handy. Check the base of the turbo, the EBPV actuator, and the base of the pedistal where it mates to the heads.
You will need the engine running for a lot of this some be very careful of the fan and belts as you get intament. Let us know what you find and we will help with the repair.
Merry Christmas
You will need the engine running for a lot of this some be very careful of the fan and belts as you get intament. Let us know what you find and we will help with the repair.
Merry Christmas
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Laughing Gas
Joined: Nov 2010
Posts: 1,193
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From: D.C. but heart's in TEXAS
HD Rider brought up an excellent point...it is highly likely you blew a HPOP hose or something on the HPOP. If the valley is full of oil, that's your top suspect.
Also check to make sure your oil cooler isn't leaking badly (by the oil filter, underneath).
Also check to make sure your oil cooler isn't leaking badly (by the oil filter, underneath).
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Freshman User
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Yes, plenty of oil in the valley. Added oil and dropped it off at my local shop. the hpop o-ring was shredding apart. The pressure sensor? was no good either. All fixed for 325, including synthetic oil. not too bad I think.
However, now that its home now it won't start at all. Just turns over and over, this after being plugged in over night and batteries topped off.
I put in a new GPR not too long ago. Is it possible that that thing has burnt up already? thus no start
However, now that its home now it won't start at all. Just turns over and over, this after being plugged in over night and batteries topped off.
I put in a new GPR not too long ago. Is it possible that that thing has burnt up already? thus no start
More Turbo
Joined: Mar 2006
Posts: 582
Likes: 2
From: Eads, TN
The tin nut on back of the IPR sometimes backs itself off and falls into the valley of your engine. Look at the picture of the IPR here:
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The truck has not started since 12/31 when it came back from the shop. Sat in my driveway plugged in until 1/3, would only turn over. A puff of ether fixed that problem, started instantly. Saturday morning it started quickly for some reason, it was plugged in and 19 degrees F above zero, warmest day we've had in a long time.
I took it my mechanic's home where we replaced all glowplugs and the valve cover gasket/wiring harness. All 4 glowplugs on the passenger failed to heat up on the work bench. All 4 on driver's side passed the bench test.
A little odd that all fail on one side?
Today's low will be about 20/21 below zero in about an hour, 9am CST, if you trust the weather people that much. I will try to start my diesel with all it's new parts, unplugged, in about an hour. I'll try to video it.
This is a test for tomorrow, it's supposed to be colder.
Stay tuned.
And the GPR tested out to be functioning properly.
I took it my mechanic's home where we replaced all glowplugs and the valve cover gasket/wiring harness. All 4 glowplugs on the passenger failed to heat up on the work bench. All 4 on driver's side passed the bench test.
A little odd that all fail on one side?
Today's low will be about 20/21 below zero in about an hour, 9am CST, if you trust the weather people that much. I will try to start my diesel with all it's new parts, unplugged, in about an hour. I'll try to video it.
This is a test for tomorrow, it's supposed to be colder.
Stay tuned.
And the GPR tested out to be functioning properly.