2019 5.2 Voodoo Bbq / typewriter tick

Discussion in 'Shelby GT350 Mustang' started by hiiammarcin, Dec 28, 2019.

  1. Tomster

    Tomster Beware of idiots

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    Drive the car and enjoy it. Get the documentation it's normal in case you ever want to sell the car.
     
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  2. Rubyred17

    Rubyred17 Well-Known Member

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    Thank you for the explanation- I wish my dealer would have gone into that level of detail. They called a field service engineer in to look at mine and after a week they declared it normal (although mine is much more pronounced than your). I too extended my warranty and plan to just enjoy the car. It was interesting they mentioned Ceratech- were they suggesting you add it? I would bet that if you had a failure they would void teh warranty by telling you its unauthorized in the manual. I run Amsoil and it still does it so I am not sure if that will make a difference.

    Best of luck!
     
  3. Condor1970

    Condor1970 Well-Known Member

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    if it is some kind of cavitation, or even a lifter that makes noise when at a lower pressure, I think the real "FIX" is to figure out a way for owners to have the oil pressure pump bypass close further, so it runs at 30psi at idle, instead of 12-15psi like the GT's do. I think because the GT's have such a low idle oil pressure, this is the main reason why there is a boat load of GT's that have the BBQ tick.
     
  4. GT Pony

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    So was the rod #4 bearing out of spec - did they measure the clearance? Was is scored or otherwise worn in some way? What made them conclude it was the rod #4 bearing, and say it was "OK". Seems like double speak from Ford.

    Did they measure the rod big end side clearance while in there looking around?

    If you study journal bearings, feeding a journal bearing with oil under pressure is a super minuscule factor in their lubrication and the developed oil film they ride on. The pumped oil is just to ensure an oil supply is at the inlet to the bearing - it really has nothing to do with the super thin oil film that a journal bearing developed and rides on; that's determined mainly by the physical design of the bearing, the oil viscosity, bearing RPM.

    However, if the oil pressure is too low to actually cause a lack of oil flow below what the journal bearing would naturally "pump" itself from rotating, then that could be a problem. But I highly doubt 28 or 29 psi instead of 30 psi of oil pressure it going to break into that "lack of oil flow volume to the bearing inlet" threshold.

    If you have the AC off and it's ticking, then you raise the RPM just a hair (like 100 RPM, a needle width on the gauge) with the gas pedal, does the ticking then go away or stay there?
     
  5. OP
    OP
    hiiammarcin

    hiiammarcin Well-Known Member

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    I tried this today and I couldn’t hear anything with the ac off. Perhaps it’s there but just more quieter. I’ll have to investigate with someone else playing with a throttle while I listen.
     
  6. CoolHandLuke

    CoolHandLuke Active Member

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    #21 CoolHandLuke, Dec 29, 2019
    Last edited: Dec 29, 2019
    Doesn’t sound like the infamous “Typewriter” tick at all in terms of the intervals in between the clicks. The 5.0 motors with the issue have a constant, fast ticking noise that in my opinion clearly sounds like piston slap and appears to increase with internal engine rotation.

    My new ‘20 has 350 miles on it and I’ve heard this noise at idle only from day one after a long drive. I attributed the noise to an exhaust/ heat shield noise due to the slow, erratic and overall “infrequent” nature of the sound. I’d say my metal ticking noises are spaced about 5 seconds apart when I do hear it and they aren’t consistent at all. Someone mentioned similar noises in Corvette engines and I do remember my last ‘15 Stingray with the LT1 engine made similar noises after a long drive.

    So far I have no abnormal noises at cold start up, during warm up or while driving at 190-200 oil temp.
     
  7. Dfeeds

    Dfeeds Well-Known Member

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    You're thinking of the 2k rattle. The two sounds are completely different. This is definitely what the bbq tick sounds like
     
  8. GT Pony

    GT Pony Well-Known Member

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    So you can still hear the randon ticking at a higher RPM than idle? Can you hear it at 1000, 1500, 2000 RPM if holding those rev points in neutral in the garage?
     
  9. CoolHandLuke

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    As stated earlier, I am speaking specifically of the "frequency" of the tick. I understand what you're saying and I've scoured youtube regarding this topic. If you take the time to do the same thing, you too will find that the vast majority of the 5.0 motor noises occur at IDLE SPEED. The sound is faster and much more "rhythmic" in nature. When you watch the different videos and then listen to the ticking noise, compare the noise to the exhaust pulses...then listen to the OP's GT350 video. There is a big difference.

    Wait a minute, I think I've figured this whole thing out! There is a tiny typewriter in the engine bay and also a hamster (who powers the car) typing a letter to Ford sympathizing with them over the countless videos being created on YouTube, creating just enough worry and mass hysteria that no one can enjoy their cars anymore.
     
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  10. OP
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    hiiammarcin

    hiiammarcin Well-Known Member

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    no, it dissipates anything over idle
     
  11. Tank

    Tank 9/11 - Never Forget

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    #26 Tank, Dec 29, 2019
    Last edited: Dec 29, 2019
    A bit late in the diagnostic process but you might want to consider getting a remote microphone and do what you can to pinpoint the source before you bring ‘er in.
     
  12. UnhandledException

    UnhandledException Well-Known Member

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    Just FYI, this ticking noise is something I had since day 1 when car was cold. It doesnt happen when car is warm. I always thought this was piston slap.

    that being said, my car now at 54,0000 miles shows elevated lead levels and I am worried of bearings going out.
     
  13. GrabberBlue

    GrabberBlue Well-Known Member

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    Someone posted about this specific tick on the Facebook group. It has to do with the oiling system, they isolated the sound using a stethoscope to around the oil filter housing area. Which makes sense why it would start making noise after the first oil change.
     
  14. martinjlm

    martinjlm Retired from GM

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    Does that mean it's present but barely when the AC is off or not evident at al when the AC is off? If it's not there at all when AC is off, I'd be looking at the AC compressor. I'm thinking this because it does vary with the engine speed. I'd think a #4 bearing issue would vary with engine speed.
     
  15. ihc95

    ihc95 Well-Known Member

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    My theory all along on the typewriter tick has been mild oil cavitaion. The response from the Ford engineer seems to confirm this. Personally, I wouldn't worry about it since we've seen Coyotes run 100k+ miles no problem with this symptom. If the sound itself bothers you, Ceratec has been proven to cure it among the 5.0 community.
     
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