94... broken chain slipper! They were redesigned after that I think.
My first post, go head an give it to me.
- Thread starter BenjaminYamuddah
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semlin
curmudgeon
to verify rick's persistent but nonetheless speculative chain slipper hypothesis, use the wooden dowel or hose trick while idling. the noise will be coming from the very front of the motor if that is the cause of the problem.
incidentily, the chain slipper on my 93 was pristine when i pulled the head so they are not all bad
incidentily, the chain slipper on my 93 was pristine when i pulled the head so they are not all bad
OK, I'll bite.
What is a chain slipper?
I may be new to Toyotas, but not new to mechanics. This sounds similar to a pallet stretcher.
Jonald
I'm not sure what the guy is doing with his truck, but any time there is a good chance of this type of failure you really don't need to be fooling around with it. I wouldn't even run the engine until I did a visual on the slipper.
semlin
curmudgeon
it's a partly plastic guide piece that, in conjunction with the tensioner, gathers up and tensions the timing chain as it leaves the cam gear and keeps the chain in place. Bit like the front deraileur on a geared bicycle only fixed.
They have been known to break and fit his description really well, especially the increase with RPM.
In 1995 they redesigned it and with the exception of me ham fisting mine I think the problem has been resolved.
In 1995 they redesigned it and with the exception of me ham fisting mine I think the problem has been resolved.
semlin
curmudgeon
saw your advice not to run it rick. i agree there is a risk in further use whatever it is, but I would like him to listen better and narrow it to inside the head and location first as removing the valve cover might be unnecessary. other thoughts are that if this truck has had a head gasket done he might have a loose bearing cap or badly adjusted valve. not easy to spot the latter even with the valve cover off but if he knows what cylinder he will know to keep digging.
While on this topic
What are tell tale signs that your 80 has had a head gasket done by a previous owner? Anything on an 80 that stands out? Factory inspected/checked paint on bolts or anything like that?
What are tell tale signs that your 80 has had a head gasket done by a previous owner? Anything on an 80 that stands out? Factory inspected/checked paint on bolts or anything like that?
semlin
curmudgeon
i'm still not sure even after doing my h/g. on the front face of the head just beneath the valve cover are two semicircular plates inset into the head. The one on the right must be popped out to remove the cams and then resealed. Look to see if the sealant surrounding it is the original factory RTV (might be hard to do since i can't recall what colour factory rtv is!) and matches the rtv on the other semicircle. mismatched rtv or the common blue rtv is a give away.
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If your referring to the rubber cam plugs, I have always resealed them when doing a valve cover gasket. So not a very good indicator of headgasket replacement?
semlin
curmudgeon
rubber cam plugs? title seems right except the rubber part. mine are aluminum. i am talking about the semicircle piece you pop out of the front of the head so you can get a socket on the cam.
I will bet most mechanics wouldn't mess with those things when replacing a valve cover gasket unless they adhered to the old gasket.
anyway, if i'm wrong then I have no other ideas
I will bet most mechanics wouldn't mess with those things when replacing a valve cover gasket unless they adhered to the old gasket.
anyway, if i'm wrong then I have no other ideas
I always look at those cam plugs as a way to tell if the hg wasn't done. If they are sealed with Grey goop then they haven't been removed.
NaterGator
On Gilligan's Island
The half moons??? When I did my VC gasket I had to reseal both as they basically just fell out. The FIPG that Mr. T sold me at the local parts dept in a pinch was exactly the same color as the stuff that was sealing them before... black...
welcome http://images.ih8mud.com//images/smilies/thefinger.gif
Put your kids on notice their college fund will be depleted in short order and all future vacations will revolve around your rig"Hey kids let s go"camping"!
Timing chain failure is a tragic thing,just ask my 944(took down the whole top end)
D
Put your kids on notice their college fund will be depleted in short order and all future vacations will revolve around your rig"Hey kids let s go"camping"!
Timing chain failure is a tragic thing,just ask my 944(took down the whole top end)
D
