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Old August 8th, 2009, 04:13 PM   #10
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Originally Posted by booblinker View Post
What engine? I have a 4.9 that does the same thing, the reason it drops to nothing is when it senses less then 5 psi, it drops to 0, kinda like an idiot light but in a gauge. I have ran my for 10k so far, and it still makes no noise, and ran great until I broke something else. As long as you aren't getting noise from the engine I wouldn't worry about it.
Its a 351. It knocks now and it burns a little bit of oil, but I think its just one of the rockers that popped off. When I first start the truck I have full oil pressure then after about 5 minutes it warms up and the gauge drops to 0. The pressure also goes back up when I give it gas.
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