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Bad Ju Ju

General Tech Talk

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Bad Ju Ju

Post by Nev62 »

I've got some bad Ju-Ju nosies coming from my motor :cry:

Tappets have been noisy for awhile when the engine is cold (tac tac tac). Once it warms up, everything frees up and all is good (tried that gunk in the oil and it works for a week or two then tac tac tac).

Last night I hear a buzzing noise and figure "bugger, radiator fan rubbing on the bottom of the shroud again". Then I remembered I took the bottom half of the shroud off because of the body lift, oh oh!

Lift the bonnet and give the accelerator linkage a nudge. I hear a plastic hollow sounding "buzz buzz buzz" (like the noise a peice of cardboard makes flapping on the spokes of a kids bike wheel).

No not from the shroud, dem noises is coming from under the rocker cover :shock:

Goes away when motor heats up until it is under load (any type of load).

What is going on :?: head is 4 cyl, SOHC, 12 valve.
FJ62 Crusier GM V8 Diesel Lockers 33 MTs/35 117 extremes
Macarthur District 4WD Club http://www.macarthur4wdclub.com.au
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Post by -Scott- »

Fraying timing belt? Frayed bits hitting something on the way thru', they do slightly different things depending on the load?

Stab in the dark.

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Post by bazzle »

Or if its a chain jobby tensioner shot

Bazzle
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Post by Nev62 »

bazzle wrote:Or if its a chain jobby tensioner shot

Bazzle


Just went out and checked, it is a "chain jobby". I thought the tensioner is a slide? How would it make that sort of noise? Not doubting, just curious. either way, it is going to be a bugger of a job to fix if it is.
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Post by J Top »

Easy fix,top up with "Black Magic " additive ,warm up on way to local
Patrol dealer and trade it for a 4WD.
J Top
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Post by DAZZ »

Timing chain tentioner or guide..... Might have been eaten!!!!! :cry:
09 Cruiser Tray ARB Bull Bar/side bars, dual batts, 3" Superiour lift, MTZs, other stuff. More to come!!!
90 Sierra Soft top, 3" body 2" spring lift, 31" Claws, 5.14 Calmini, more to do.
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Post by shorty.mqute »

J Top wrote:Easy fix,top up with "Black Magic " additive ,warm up on way to local
Patrol dealer and trade it for a 4WD.
J Top



:rofl: :rofl: :twisted:

i like the way you think j top....
ours is not to ask why, but to do or die!
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Post by Nev62 »

Ok, think I have found the source of the noise... catalytic converter :oops:

I got under the car and pinpointed it straight away. Don't know what is loose in there and could not find a leak but once it warms up, things must expand enough to hold things tighter. Buggered how the sound was travelling back up to the engine bay like that.

Just as a side note, I think the Raider will be going. If the engine does blow, cost are crazy, head re-build $1000, used engine from wreakers $1750-$2500, engine re-build $3500 :shock:

Looking to trade it in on a GQ and cut my losses (bloody thing cost $20000 just 5yrs ago and now worth around $6000).
FJ62 Crusier GM V8 Diesel Lockers 33 MTs/35 117 extremes
Macarthur District 4WD Club http://www.macarthur4wdclub.com.au
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DamTriton
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Post by DamTriton »

Possibly a loose heat shield??? Try a couple of large hose clamps around each end of the cat. The spot welding can come loose due to heat cycling allowing the shield to rattle like all crap. Happens on the Kia too....
George Carlin, an American Comedian said; "Think of how stupid the average person is, and realise that half of them are stupider than that".
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Post by low40 »

could be rocks in the heat sheild
or the honeycomb breaking up inside
no more forty now have a 80
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Post by low40 »

could be rocks in the heat sheild
or the honeycomb breaking up inside
no more forty now have a 80
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Post by low40 »

could be rocks in the heat sheild
or the honeycomb breaking up inside
no more forty now have a 80
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