2000 Excursion running rough
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2000 Excursion running rough
Newbie here. Had a used 5.4L motor installed in my 2000 Ford Excursion. A week later the oil gauge went crazy and a tanish yellow sludge started erupting from the radiator overflow. The mechanic who installed the motor said that the engine oil cooler had failed and that the oil was forced into the cooling system. So I replaced the engine oil cooler and spent an entire day trying to flush the sludge from the engine cooling system. The truck was running nice and smooth until I did the flush of the cooling system. Now it is running very rough. The engine was sprayed down to rinse off all residual from flush. Now it acts like it is missing. Driving down the road causes it to seem to bog down at certain speeds. Could the belt have slipped and the timing be off causing this issue? Any other clues or suggestions are greatly appreciated?
David
Year : 2000
Make : Ford
Model: excursion
Engine: 5.4L gas
David
Year : 2000
Make : Ford
Model: excursion
Engine: 5.4L gas
Cargo Master
Joined: Jul 2009
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From: Chino, California
You'll need to pull the COP and boots off and blow them out with compressed air. While you have them off, get yourself a new set of boots. Reinstall using dielectric grease.
Hopefully your COPs are still ok and didn't get shorted.
Hopefully your COPs are still ok and didn't get shorted.
Hotshot
Joined: Mar 2011
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The oil cooler fails a week after the mechanic installs the motor and you wind up with oil in the cooling system.
My initial reaction is that you've got a bad head or bad head gasket on the new motor and oil and water are mixing in places where the aughtn't be mixing.
Can you pull the plugs and inspect them? You know that oil has been forced through a gasket into the cooling system somewhere. If a plug is wet (oil or coolant) you've got a lot more serious problems with this motor than just a misfire.
My initial reaction is that you've got a bad head or bad head gasket on the new motor and oil and water are mixing in places where the aughtn't be mixing.
Can you pull the plugs and inspect them? You know that oil has been forced through a gasket into the cooling system somewhere. If a plug is wet (oil or coolant) you've got a lot more serious problems with this motor than just a misfire.
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Can you tell me what COP stands for?
Replacing the engine oil cooler has resolved the issue, there is no more oil/antifreeze mix. Engine runs fine, it is a missing timing issue.
Thank you for the input! Greatly appreciated!
Replacing the engine oil cooler has resolved the issue, there is no more oil/antifreeze mix. Engine runs fine, it is a missing timing issue.
Thank you for the input! Greatly appreciated!
Hotshot
Joined: Mar 2011
Posts: 11,950
Likes: 5,076
COP = Coil Over Plug.
The 5.4 motor has one coil per plug, with each coil located at the plug.
The 5.4 motor has one coil per plug, with each coil located at the plug.
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You guys are GREAT! Thank you. Is there a link to spark plug replacement?
Seems like it would have been quite difficult for H2O to have gotten in there but I will have a look! Lots of compressed air!
Thanks again.
Seems like it would have been quite difficult for H2O to have gotten in there but I will have a look! Lots of compressed air!
Thanks again.
Cargo Master
Joined: Jul 2009
Posts: 2,885
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From: Chino, California
A crack in the old rubber boot could allow water to seep through and make an electrical connection to the hot wire to your plug. That's why it is always a good idea to replace those boots when you change the plugs.
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Well folks all plugs and new boots installed. The engine starts but runs VERY rough, even at idle. At 35-40 truck starts shaking violently. (OK maybe a little extreme) What can be done to adjust the idle?
Cargo Master
Joined: Jul 2009
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From: Chino, California
You can try pulling each COP one at a time to see which one may be misfiring, if that is the issue. If you pull one and there is no change in how the engine idles, then that's the one.