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1979-2004 V6 Mustang Tech Discussions

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Unread 05-16-2010   #1 (permalink)
stryker5 is offline Rookie


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Question oil pump priming and timing

The 1998 3.8L engine my husband put into the 94 mustang to replace the dead one is giving him some crap. He was unable to time it correctly because he has two number that he located for it, one was 29 the other like 10 or something. He also can't seem to find anywhere what it says about having to prime the oil pump or not because it is not a rebuild but just a used motor. I can understand with a rebuild how important it is to lubricate with the vaseline. He was thinking maybe because the engine has been sitting for a while all the oil may have drained from it and may need to be primed again. Any suggestions?:?:
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Unread 05-17-2010   #2 (permalink)
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what? did he try timing it with a timing light? Is that what you are saying? Or is it too late and too many el capitainos for tommy? Im leaning toward the first tho.
Priming any motor when you put it in is a good idea. i would do it even if we swapped it that afternoon out of another running car.
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Unread 05-17-2010   #3 (permalink)
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Quote:
Originally Posted by stryker5 View Post
The 1998 3.8L engine my husband put into the 94 mustang to replace the dead one is giving him some crap. He was unable to time it correctly because he has two number that he located for it, one was 29 the other like 10 or something. He also can't seem to find anywhere what it says about having to prime the oil pump or not because it is not a rebuild but just a used motor. I can understand with a rebuild how important it is to lubricate with the vaseline. He was thinking maybe because the engine has been sitting for a while all the oil may have drained from it and may need to be primed again. Any suggestions?:?:
You can get a priming tools from any auto parts store, remove the cam synchronizer, and prime the oilpump. However, if you do not have a mechanical gauge on the oil system, you will not know it is primed properly.

Also, about setting the cam synchronizer, check out my write-up at the top of the tech page. You do not have to worry about any other settings other than setting it on #1 TDC, and pin in the window......
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Unread 05-17-2010   #4 (permalink)
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Priming an oil pump isn't overly difficult. The peeps are correct you need to remove the cam synchronizer. Once that is removed you can use a drill with a 5/16 deep well socket and a long extension hooked up to a drill. Be very careful not to lose the socket. They also sell tools for this and you will not need to worry about losing the socket in the motor. As far as knowing if you are getting oil pressure. Believe me you will know it. The drill will slow down quite a bit and you will feel the drill trying to torque out of your hands. I usually prime the system until I see oil coming out of the top of the rocker arms. This way you know all of the lifters are primed and oil has made it's way to the top of the cylinder heads.
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Unread 05-18-2010   #5 (permalink)
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Thanks a bunch guys. My poor husband, the things he does for his 3 daughters. Well he primed it anyways to be on safe side. the engine sounded like crap, shut it down, checked the oil and it was milky. Did compression checks=good compression, there was no coolant leak and oil smelt just like new oil. . Adjusted the timing, drained the oil. Did complete oil change tonight. Running pretty good tonight after getting the rest of the water out. Apparently some condensation from when the new engine just sitting. He did use Lucas' with oil change. Says he is going to change the oil out one more time and call it good. Wow!! Can't thank this site enough for the tremendous knowledge you all shared with him via me. Hope to have some pics soon.
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