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V 6, 2001 Dodge truck 1500. Oil pressure gauge goes to zero.

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v 6, 2001 Dodge truck...
v 6, 2001 Dodge truck 1500 . Oil pressure gauge goes to zero. After sitting and restaring all is fine for perhaps a day. motor recently overheated and boiled out all water. Bad radiator. Put in fresh and statred engine. lots of valve clatter, but while engine reached operating temp, noise solowly died away. Truck runs cool. [185-195 degrees] Oil presure is manitained at 40-50 except expected increase with engine revs. Did drain 1 quart of fresh oil and pour in Marvel oil. Truck ran great all day. Valves started clattering, Oill pressure dropped to zero. Left truck sitting. What is going on?
Submitted: 8 years ago.Category: Dodge
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Answered in 3 minutes by:
3/19/2010
Dodge Mechanic: Richard, Dodge Technician replied 8 years ago
Richard
Richard, Dodge Technician
Category: Dodge
Satisfied Customers: 4,141
Experience: Over 26 years of experience as lead tech and shop foreman.
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Hello and welcome to Just Answer!

Do you have a mechanical gauge installed or are you just going by the gauge in the instrument cluster?

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Customer reply replied 8 years ago
I do not have a mechanical gauge. I am assuming the gauge is electicallly powered as are all the gauges in the dash panel.
Dodge Mechanic: Richard, Dodge Technician replied 8 years ago

The first thing we need to do is install a mechanical pressure gauge to see if the oil pressure is dropping off. Most mechanics have an oil pressure gauge and I would suggest getting it checked. This will rule out the the electric gauge system in the truck.

This is the first thing I do every time when I have a complaint of oil pressure drop off.

The gauge should be screwed into the port where the sending unit is.

Let me know if the pressure drops to 0 with a mechanical gauge. If it does you will likely have an oil pump/pick up screen issue or worn engine bearings.

Thanks,

Richard

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