I have a 98 Rodeo, V6, 4x4. I have let a couple people listen to my
engine and both of them said that the engine noise is from my lifters.
I asked my dad about the difficulty of adjusting them myself and he
stated that it depends of whether they are hydrolic or mechanical but
doable. so.. I went to my auto parts store to purchase some MORE oil
for it and found out it was mechanical lifters. So, after finding out
that they don't carry a repair manual for 98 rodeo could someone tell me
the about adjusting my lifters? tightening order? torque presure?
While it could be your lifters making the noise it doesn't mean they
need adjusting. The V6 is well known to make this ticking noise often
when new. There is a TSB out for it but not really a fix. I believe
the TSB has you change to 5W-30 Mobile 1 for a 1000 miles or so.
Something about a small oil gally that gets clogged up. Others have
stated the ticking noise is the injectors.
I haven't adjusted the lifters on this particular engine. Normally it
is not a matter of torque or particular order for mechanical lifters.
It is setting a correct clearance gap using a feeler guage.
This engine's valve clearances are adjusted with shims.Valves are operated
by the camshaft via the timing belt gear. There are no lifters. Clearance
measurements are taken between the cam and the tappet when the nose of the
cam is opposite to maximum cam lift (pointy part of cam opposite of tappet,
round part of cam in contact with tappet).
6VD1 3.2L engine
Valve clearance standard value for a cold engine:
Intake: 0.23 mm - 0.33 mm (0.0091 in - 0.0130 in)
Exhaust: 0.25 mm - 0.35 mm (0.0098 in - 0.0138 in)
Shim to be selected= (thickness of removed shim) + (valve clearance
measurement) - (standard value)
You will need a selection of shim stock in 0.02 mm increments (0.008 in)
ranging from 2.4 mm -3.2 mm (0.0945 in - 0.1260 in)
But, like Miles said, it's more likely that the noise is coming from the
injectors. Make sure your oil level is correct. Valve noise occurs if you
let your oil level drop, and that's easy to do with this engine. Many V6
owners have to add oil between oil changes. It's a "feature".
'96 Rodeo owner here, and I can attest to the fact that it gets noisy when
the oil level drops. ;) I can't figure where it's leaking the oil though.
It appears to be around the valve covers, but I'm not 100% sure. Anyway,
it's been like that for quite a while now(170,000 on the odo, probably
60,000 or less when it started), and I just try to make sure the oil doesn't
get too low.
I'm intrigued about this injector noise though... this is the first I've
read about this. Can you explain more?
It may or may not be a leak. The 3.2 burns some oil, although you typically
don't see the smoke from the tailpipe. To look for the leak - spray the
suspected area with Simple Green cleaner and brush it with a brush (a cheap
2" paint brush works well for this) then rinse. Repeat if necessary. Use low
water pressure-you don't want to inject water where it doesn't belong. Now
you have a clean engine and if you see new oil after a while, you've found
They're just that way - noisy. Well, they sound like clockwork really.
Nothing wrong with that because it's a truck, not a limousine. If it's
running well, consider it music.
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