Hot start problem

Magnum PD · Apr 10, 2017

Your gonna need to check the lpop.

rusty1161 · Apr 10, 2017

Injector o-rings?

Rusty

1995f2507.3 · Apr 11, 2017

rusty1161 said:
Injector o-rings?

Rusty

Wouldn't there be engine oil in the fuel bowl if it was injector o-rings? I checked the fuel bowl yesterday and the fuel was its normal color

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Magnum PD · Apr 11, 2017

If oil isn't coming out/filling up the hpo Rez, you need to check the lpop. Then pickup tube.

1995f2507.3 · Apr 11, 2017

Magnum PD said:
If oil isn't coming out/filling up the hpo Rez, you need to check the lpop. Then pickup tube.

Will I have to pull the motor to check the pickup tube?

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Magnum PD · Apr 11, 2017

Afraid so. First step, lpop

LowFlying7Three · Apr 11, 2017

Overfill the oil. It can help confirm a pickup tube issue. Does your oil pressure 'gauge' go to normal once you crank it a few seconds?

1995f2507.3 · Apr 11, 2017

My oil gauge acts weird. Sometimes it works sometimes it doesn't. Have replaced the sensor on the hpop but it still does it

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superpsd · Apr 11, 2017

Remove the oil pressure sender on top of the resivoir and install a mechanical gauge to see if you do have a lpop supply problem.

Magnum PD · Apr 11, 2017

1995f2507.3 said:
No it isn't filling up.

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This is why I say check lpop

Patrick Feeley · Apr 11, 2017

1995f2507.3 said:
Wouldn't there be engine oil in the fuel bowl if it was injector o-rings? I checked the fuel bowl yesterday and the fuel was its normal color

If the top set of injector O-rings fail, oil will leak out around the base of the injectors (and possibly enough to not let pressure build). You can remove the valvecovers and crank it to see if there is oil leaking around the bases. Cheers!

rusty1161 · Apr 11, 2017

Patrick Feeley said:
If the top set of injector O-rings fail, oil will leak out around the base of the injectors (and possibly enough to not let pressure build). You can remove the valvecovers and crank it to see if there is oil leaking around the bases. Cheers!

This was my truck right here. Mine started as a hot long start and ended up a hot no start. Here is a thread started by GNXTC.

http://powerstrokearmy.com/forums/showthread.php?t=55804

Rusty

1995f2507.3 · Apr 11, 2017

Patrick Feeley said:
If the top set of injector O-rings fail, oil will leak out around the base of the injectors (and possibly enough to not let pressure build). You can remove the valvecovers and crank it to see if there is oil leaking around the bases. Cheers!

Would this allow the hpop to not fill up? I will try and do this tomorrow

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superpsd · Apr 11, 2017

You can test that by dead heading each hpop line to the heads one at a time. As far as not filling the resivoir. The resivoir should be filling at least by cranking. A mechanical gauge on the lpop side is easy. You can use a porter power unit to pressurize the rails and look for oil bleeding off and seeing it holds pressure.

1995f2507.3 · Apr 11, 2017

I overfilled the oil pan and still nothing was getting in the reservoir . Maybe I didn't add enough? It was a little above the full mark when I checked it yesterday and probably added 1-1 1/2 quarts earlier today

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Dirtclod · Apr 12, 2017

When mine did this it was IDM

Magnum PD · Apr 12, 2017

Again...... LPOP

LowFlying7Three · Apr 12, 2017

Magnum PD said:
Again...... LPOP

What he said.

When you overfill it, put 5 or 6 extra quarts in. If you still have nothing the lpop probably isn't moving enough. Trash can go through them and eat up the cover.

Just remember to drain the excess back off.

JCart · Apr 13, 2017

I would also check your injection pressure regulator. Get a rebuild kit from international or Riffraff Diesel. Or Ford although the last time checked they were $120.00 versus $25.00 at IH. Also check the harness that goes to the IPR as it sometimes will deteriorate from Diesel and oil causing the signal to short, also check the plug.

I'd do this before doing a L pressure oil pump and iirc you don't have to pull the block to replace the LPOP.

j

1995f2507.3 · Apr 13, 2017

JCart said:
I would also check your injection pressure regulator. Get a rebuild kit from international or Riffraff Diesel. Or Ford although the last time checked they were $120.00 versus $25.00 at IH. Also check the harness that goes to the IPR as it sometimes will deteriorate from Diesel and oil causing the signal to short, also check the plug.

I'd do this before doing a L pressure oil pump and iirc you don't have to pull the block to replace the LPOP.

j

My ipr harness has been hacked up before and when I touch I believe the red wire on the connector they put on I could shut the engine off just by running it( when it ran) I redid that wire today just didn't have much time to do anything else to the truck

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