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1990 w150 no oil pressure

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Old 02-18-2018, 07:51 PM
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Exclamation 1990 w150 no oil pressure

I have a 1990 power ram 5.2l 318 with 10k miles since the engine was rebuilt i started it up and it has completely no oil pressure so I pulled the valve cover to make sure it was a faulty sensor and still no oil pressure so I pulled the oil pan and checked the oil pump and it's still in good working condition it was replaced when the engine was rebuilt so I checked the shaft and it spins with the engine so I put it all back together with new 5 qts of oil and a new filter and still no oil pressure any ideas???
 
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Old 02-18-2018, 08:31 PM
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have you checked with a mechanical gauge? when in doubt i always go old school. mechanical oil pressure gauges are cheap and let you see exactly what the oil pressure is doing.
 
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Old 02-18-2018, 08:33 PM
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I haven' tried that but if its not getting oil too the rockers what would be the point?
 
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Old 02-18-2018, 09:33 PM
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with a mechanical gauge you would see if the engine is building oil pressure or not
 
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Old 02-18-2018, 11:32 PM
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If it is getting pressure why would the rockers not be getting oil?
 
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Old 02-18-2018, 11:34 PM
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Your rockers are dry?
 
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Old 02-18-2018, 11:35 PM
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Yeah it no oil at all to the rockers on the driver side I will check the passenger side tomorrow which will probably be the same
 
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Old 02-18-2018, 11:39 PM
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You check if the pickup tube was clear?
 
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Old 02-18-2018, 11:41 PM
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Ya I cleaned it out and blew air through it and I checked the oil pump by putting a Alan bit on a drill and it seems to pump and push just fine
 
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Old 02-18-2018, 11:46 PM
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Does it sound like like dry lifters? Check dipstick when its warmed up should be thin and high on it. Old trick for oil pressure problems is put 1 qrt of tranny fluid in.
 

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