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Thread: replaced front crank seal, sounds like no oil

  1. #1
    turbo addict Murphy's Avatar
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    replaced front crank seal, sounds like no oil

    My car started losing oil really bad from the front of the engine. It got to the point of the lifters tapping, but never knocking. I went in and replaced the front main seal. When it pulled it into the garage, it wasn't even tapping. After putting everything back together, I start the engine, and it sounds like there is no oil in it. I have oil pressure at about 3/4 of the gauge at idle. In replacing the seal, I did not pull off anything that had a gasket on it, i was able to pull the old seal out by hand.
    95 spirit 3.0/543 15.0@91 N/A, 14.5@96 on a 50 shot
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  2. #2
    Supporting Member Turbo Mopar Contributor Ondonti's Avatar
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    Re: replaced front crank seal, sounds like no oil

    not really sure what you mean by no oil in it. The engine won't make a noise because you have a leak. If you lost oil pressure the bearings are what I worry about.
    Brent
    GREAT DEPRESSION RACING
    1992 Duster 3.0 - 11.5@125 22psi $90 Stock 3.0 Junk Motor - 516whp 519wtq 20psi 91 oct built 3.0 stock n/a computer
    Currently Megasquirt II/Extra. Stock 10:1 3.0 naturally aspirated
    1994 Spirit 3.0 - 13.85@108.8 10 psi - Daily Holset He341 280whp 304ft/lb
    1994 Spirit 3.0 A670 - Wife's
    1981 Starlet KP61 Parts
    1983 Starlet KP61 Parked

  3. #3
    turbo addict
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    Re: replaced front crank seal, sounds like no oil

    Did you change the oil? I've found a couple of brands that sound like arse... and how long did this take? IF you drive it daily and never hear tap, it's a different thing when it's been sitting 2 or 3 days, they'll bleed down. If it persists after holding it at 2000 RPM for 30 secs or so, worry, if it clears up, don't.
    '88 Voyager 3.0, Auto with shift kit, timing advance, walker sound FX muffler on 15" pumpers wrapped in 215/65/R15 H rated Nexens.... and a '95 phord escort wagon PnP head.

    I like 3.0s ... so??? ... stop looking at me like I've got two heads!

  4. #4
    turbo addict Murphy's Avatar
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    Re: replaced front crank seal, sounds like no oil

    theres the tapping which I'm not worried about but there also sounds to be bottom end noise, or something banging around that sounds really bad. I never lost oil pressure. I replaced the oil with the same brand I had it in before I blew out the front crank seal. It only took a few hours to do the front crank seal.
    95 spirit 3.0/543 15.0@91 N/A, 14.5@96 on a 50 shot
    87 shelby Z - project car, maybe I can drive it this year
    70 chevy custom camper - work truck
    89 chevy blazer - being sold
    97 chevy burb - family vehicle
    94 acura integra GSR - Wife's car
    91 spirit - roll it, chop the top, do some burnouts! RIP

  5. #5
    turbo addict Murphy's Avatar
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    Re: replaced front crank seal, sounds like no oil

    I started it up again and it didn't sound too bad. There's definitely a new sound, almost like a diesel at idle when the engine is cold. I drove it to work and back (40 miles). It runs great and isn't leaking oil
    95 spirit 3.0/543 15.0@91 N/A, 14.5@96 on a 50 shot
    87 shelby Z - project car, maybe I can drive it this year
    70 chevy custom camper - work truck
    89 chevy blazer - being sold
    97 chevy burb - family vehicle
    94 acura integra GSR - Wife's car
    91 spirit - roll it, chop the top, do some burnouts! RIP

  6. #6
    turbo addict
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    Re: replaced front crank seal, sounds like no oil

    hmmm maybe the piston pins got a little loose from lack of lube when it was leaking and it's piston slap.
    '88 Voyager 3.0, Auto with shift kit, timing advance, walker sound FX muffler on 15" pumpers wrapped in 215/65/R15 H rated Nexens.... and a '95 phord escort wagon PnP head.

    I like 3.0s ... so??? ... stop looking at me like I've got two heads!

  7. #7
    Supporting Member Turbo Mopar Contributor Ondonti's Avatar
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    Re: replaced front crank seal, sounds like no oil

    how bad was your oil leak?
    Brent
    GREAT DEPRESSION RACING
    1992 Duster 3.0 - 11.5@125 22psi $90 Stock 3.0 Junk Motor - 516whp 519wtq 20psi 91 oct built 3.0 stock n/a computer
    Currently Megasquirt II/Extra. Stock 10:1 3.0 naturally aspirated
    1994 Spirit 3.0 - 13.85@108.8 10 psi - Daily Holset He341 280whp 304ft/lb
    1994 Spirit 3.0 A670 - Wife's
    1981 Starlet KP61 Parts
    1983 Starlet KP61 Parked

  8. #8
    turbo addict Murphy's Avatar
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    Re: replaced front crank seal, sounds like no oil

    pretty much a steady drip. I would lose a quart every approximately 20 minutes. It still held good oil pressure.
    95 spirit 3.0/543 15.0@91 N/A, 14.5@96 on a 50 shot
    87 shelby Z - project car, maybe I can drive it this year
    70 chevy custom camper - work truck
    89 chevy blazer - being sold
    97 chevy burb - family vehicle
    94 acura integra GSR - Wife's car
    91 spirit - roll it, chop the top, do some burnouts! RIP

  9. #9
    Supporting Member II Turbo Mopar Contributor minigts's Avatar
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    Re: replaced front crank seal, sounds like no oil

    I tried sealing the oil pan twice with cork gaskets and had an oil leak like that. Not sure how you sealed the pan (if you pulled it), but if you didn't seal it well on the install you'd have an oil leak similar to that. Worth checking.


    Jon Trotter

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    1985 Dodge Shelby Charger, Currently decommissioned
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    1987 Shelby Lancer, #628

    Quote Originally Posted by Reeves View Post
    I can be ready. Please send pics of wife.
    _____DodgeZ add comments here______

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    Re: replaced front crank seal, sounds like no oil

    probably a combo of wristpin slap and upper end sound is prob some beat up lifters.

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    Re: replaced front crank seal, sounds like no oil

    Timing belt too tight? Idler noisey? Waterpump noisey? Timing belt hitting covers?
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  12. #12
    Supporting Member Turbo Mopar Contributor Ondonti's Avatar
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    Re: replaced front crank seal, sounds like no oil

    I don't think you have any sort of piston slap going on. Bad sounds in a 3.0 are either really bad, or harmless.
    Multiple times I have thought there was a problem and it was an exhaust leak that sounded like metal on metal.

    Check if any of the lifters are soggy. Post up a video of the sound.
    Brent
    GREAT DEPRESSION RACING
    1992 Duster 3.0 - 11.5@125 22psi $90 Stock 3.0 Junk Motor - 516whp 519wtq 20psi 91 oct built 3.0 stock n/a computer
    Currently Megasquirt II/Extra. Stock 10:1 3.0 naturally aspirated
    1994 Spirit 3.0 - 13.85@108.8 10 psi - Daily Holset He341 280whp 304ft/lb
    1994 Spirit 3.0 A670 - Wife's
    1981 Starlet KP61 Parts
    1983 Starlet KP61 Parked

  13. #13
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    Re: replaced front crank seal, sounds like no oil

    lol- i thought he's been talking about a 2.2 or 2.5 lol

  14. #14
    turbo addict Murphy's Avatar
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    Re: replaced front crank seal, sounds like no oil

    so I drove the car to school today. I drove it 40 miles yesterday and the tone didn't change so I was thinking(hoping) i thats something in the timing belt area, or a dead lifter. I got about 3/4 of the way to school and the sound got worse. When I went to leave school, the engine ran for a minute then died. when I cranked it, it sounds like it has no compression. I pulled off the front cam cover and the cam gear did move when I cranked the engine. I'm going to have it towed home tomorrow and pull off the valve covers and oil pan to see what happened.

    I know it was stupid move driving the car when it was making a bad noise, but I can never learn things the easy way....
    95 spirit 3.0/543 15.0@91 N/A, 14.5@96 on a 50 shot
    87 shelby Z - project car, maybe I can drive it this year
    70 chevy custom camper - work truck
    89 chevy blazer - being sold
    97 chevy burb - family vehicle
    94 acura integra GSR - Wife's car
    91 spirit - roll it, chop the top, do some burnouts! RIP

  15. #15
    boostaholic
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    Re: replaced front crank seal, sounds like no oil

    you and me both, my man.
    Pete Faggella
    03 PT Cruiser, 2.4L N/A 5 speed. Daily driver. All stock with baby moon wheels.
    85 LeBaron 2.2TBI auto. Hoped I'd see a difference with bumped compression, but I didn't. Still slow.

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  16. #16
    turbo addict Murphy's Avatar
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    Re: replaced front crank seal, sounds like no oil

    I am REALLY wondering about what happened since it was driving smooth and strong for 50 miles then got worse. I don't think its bottom end related, but that might just be wishful thinking. It didn't sound like a rod knock, at least not like you hear in a 2.2/2.5 engine.
    95 spirit 3.0/543 15.0@91 N/A, 14.5@96 on a 50 shot
    87 shelby Z - project car, maybe I can drive it this year
    70 chevy custom camper - work truck
    89 chevy blazer - being sold
    97 chevy burb - family vehicle
    94 acura integra GSR - Wife's car
    91 spirit - roll it, chop the top, do some burnouts! RIP

  17. #17
    Supporting Member II Turbo Mopar Contributor minigts's Avatar
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    Re: replaced front crank seal, sounds like no oil

    Good luck Murph, I hope it's nothing too expensive to fix.


    Jon Trotter

    1984 Dodge Shelby Charger, SCCA E Production Class
    1985 Dodge Shelby Charger, Currently decommissioned
    1987 Shelby GLHS, #937
    1987 Shelby Lancer, #628

    Quote Originally Posted by Reeves View Post
    I can be ready. Please send pics of wife.
    _____DodgeZ add comments here______

  18. #18
    Supporting Member Turbo Mopar Contributor Ondonti's Avatar
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    Re: replaced front crank seal, sounds like no oil

    Junkyard engine be cheap n fast!

    I drove 1000+ miles on a spun bearing, and it never let go. I split a piston in half (after already killing 4 ringlands) and that was the only thing that could stop her. 3.0 rod knock is something that is obvious to someone familiar with 3.0's but not to people who work with other engines. That motor I drove 1000+ miles (including Washington to Utah), nobody would agree that it was rod knock. Mechanic said he thought it was okay to drive back to school in the car. I was still able to drive the car home 4 miles, but I bought some oil to keep replacing it as I drove home.

    Thats why 3/S people just ask to hear some audio. 3.0 rod knock is hallow sounding but not very loud.
    I had another motor with a bad bearing that I installed after that (was in the spare tire well in the duster, in a foot of water) and I just threw in a new bearing, didn't know what I was doing. That motor made a terrible clattering sound then locked up. I took it apart and nothing was wrong inside except that the bearing spun again. Not sure if the piston contacted the head or what.

    3.0 spun bearings are always caused by low oil unless you have a weird issue like detonation breaking the piston and the piston smashing that ringland against the head and blowing out the bearing
    That means they are always preventable.
    Brent
    GREAT DEPRESSION RACING
    1992 Duster 3.0 - 11.5@125 22psi $90 Stock 3.0 Junk Motor - 516whp 519wtq 20psi 91 oct built 3.0 stock n/a computer
    Currently Megasquirt II/Extra. Stock 10:1 3.0 naturally aspirated
    1994 Spirit 3.0 - 13.85@108.8 10 psi - Daily Holset He341 280whp 304ft/lb
    1994 Spirit 3.0 A670 - Wife's
    1981 Starlet KP61 Parts
    1983 Starlet KP61 Parked

  19. #19
    turbo addict
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    Re: replaced front crank seal, sounds like no oil

    Something that I thought was rod knock ended up coming from the tranny.
    '88 Voyager 3.0, Auto with shift kit, timing advance, walker sound FX muffler on 15" pumpers wrapped in 215/65/R15 H rated Nexens.... and a '95 phord escort wagon PnP head.

    I like 3.0s ... so??? ... stop looking at me like I've got two heads!

  20. #20
    Supporting Member Turbo Mopar Contributor Ondonti's Avatar
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    Re: replaced front crank seal, sounds like no oil

    yeah, they thought my rod knock was intermediate shaft sound "getting worse"
    Of course that sound would go away with the clutch in but who really has their brain on duty when it really matters.
    Brent
    GREAT DEPRESSION RACING
    1992 Duster 3.0 - 11.5@125 22psi $90 Stock 3.0 Junk Motor - 516whp 519wtq 20psi 91 oct built 3.0 stock n/a computer
    Currently Megasquirt II/Extra. Stock 10:1 3.0 naturally aspirated
    1994 Spirit 3.0 - 13.85@108.8 10 psi - Daily Holset He341 280whp 304ft/lb
    1994 Spirit 3.0 A670 - Wife's
    1981 Starlet KP61 Parts
    1983 Starlet KP61 Parked

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