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1997 chev truck 350 vortec oil presure gaga runing at 60 then drops to the right side of gage not to zero when step on brake comes back up to 60 psi then drops again to right side of gaga not to zero

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Posted on Jan 02, 2017

  • 16 Answers

SOURCE: 1997 chev 1500 with 350 vortec milky oil in dipstick tube

Sorry to say its your head gaskets. Probably from the overheating it wore out the gaskets. that milky stuff is your coolant mixing with your oil. Good luck. Suggest you take it to a pro. the gaskets are easy to change, it's everything else in the way to get to them that requires special tools and experience. Let me know how it goes. I have the same thing with my truck but not real bad. If your truck is running smooth and doesn't feel like its missing, or when your start it no puff of white smoke comes out your exhaust it's not that big of problem. if these are happening then i would get a quote.

Posted on Jul 27, 2009

  • 181 Answers

SOURCE: 1997 gmc sierra transmission swap to 1998 chev

IF BOTH TRANS ARE THE SAME,THEN YOU SHOULD HAVE NO PROBLEM

Posted on Oct 28, 2009

  • 17 Answers

SOURCE: truck runs great but the oil pressure gage goes zeros out

Did you find the sending unit and was that the problem?

Posted on Nov 21, 2009

  • 1608 Answers

SOURCE: the oil presure gage goes up and down from zero to

All you have to do is replace your oil pressure sending unit.It`s in the rear of the motor by the left head.This is the drivers side.You need a special socket to remove the sending unit.Good luck.

Posted on Dec 05, 2009

  • 12 Answers

SOURCE: oil pressure drops to zero when engine starts then

The 4.3 engine should have 20 to 30 psi at idle cold and around 50 to 60 psi running down the road. Has this engine had regular oil changes? If not the problem could be sludge build up. The oil pressure sending unit could be the problem. If in question about the sending unit install a mechanical gauge and watch the pressure.

Posted on Jan 02, 2011

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Oil pressure drops to zero when engine starts then goes to 60,while driving after warm,pressure drops down 4.3 V6 vortec engine


The 4.3 engine should have 20 to 30 psi at idle cold and around 50 to 60 psi running down the road. Has this engine had regular oil changes? If not the problem could be sludge build up. The oil pressure sending unit could be the problem. If in question about the sending unit install a mechanical gauge and watch the pressure.

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The oil presure gage goes up and down from zero to


All you have to do is replace your oil pressure sending unit.It`s in the rear of the motor by the left head.This is the drivers side.You need a special socket to remove the sending unit.Good luck.

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Oil pressure gauge goes up when car started, but then down to 0


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2 Answers

1997 chev 1500 with 350 vortec milky oil in dipstick tube


You have a blown head gasket.Water in the fuel.This is a classic sign of engine damage.

Jul 27, 2009 | 1997 Chevrolet K1500

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