Strange startup noise?

Discussion in '80-Series Tech' started by tucker74, Oct 24, 2005.

  1. tucker74

    tucker74 Moderator

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    My FZJ's been making a strange noise on cold startups - kinda like a "bruunnnt" lasting less than a second right after firing, and only when the ambient temp is below 60 or so. I don't know where to start - the belts have less than 6k on them and it doesn't "sound" like the starter. I'm not sure though - this truck has an aftermarket starter so I haven’t done the contacts/plunger. Anyone come across something similar?

    Tucker
     
  2. KliersLC

    KliersLC

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    Is it a rattle? Or could it be described as a valve train noise? If so, search for startup rattle to find out a bunch, but it is solved by the newer toyota filter and if you want, a higher viscosity oil.
    Good luck,
    Dan
     
  3. tucker74

    tucker74 Moderator

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    Doesn't sound like valve tap ... using 15W-50 M1 and Purolator PureOne so it's pretty unlikely. More like a screaching/grinding sound ... but not starter (or what I've heard from 1FZ starter in the past).

    Anyone else?

    Tucker
     
  4. Beowulf

    Beowulf

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    Could be the chain tensioner not pumping up quickly and you're getting some slap on the cover. Might also be a busted chain guide.

    -B-
     
  5. tucker74

    tucker74 Moderator

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    That doesn't sound good :frown: Anybody else seen this? Better get out the stethoscope ...

    Tucker
     
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