Strange startup noise?

tucker74

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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
 
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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
 

tucker74

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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
 

tucker74

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

Tucker
 
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