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Mixing valve i have a 2004 mazda 3 with the 2.ol engine in it it just turned over to 300000km and i need to know it this engine has hydraulic lash adjudsters for the mixing valves, if not i need more information on how to carry out a valve lash adjustment on this engine. thanks, Josh

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IT will have hydraulic tappets and no adjustment is necessary . It is making a tappet sound then at that mileage I would be inspecting the rocker bushes and shafts for wear as this is a Mazda problem when the engine s get old. Replacement is the best option.

Posted on Oct 12, 2013


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SOURCE: I have a 2004 mazda mpv 3.0 engine it shows code

do ou have dohc

if so sounds like the vvt actuator.....
just a thought!!

Posted on Feb 15, 2011

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SOURCE: I want to know the valve clearance adjustment.

intake .22 to .28 mm
exhaust .27 to .33 mm
rate me solved...this is all I can find

Posted on Jun 27, 2008

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How do I check the valve lash on my toyota 5k engine with hydraulic valve lifters?

it is not necessary and impossible to do so as the lash is taken up by the hydraulic lifter operation. There will be no adjusting screws on the rockers for the adjusting purposes. If it is making aclicking/tapping noise similar to loose tappets and the engine has done miles then it is possible that either the rocker shaft and rocker bushes are worn or the hydraulic followers need replacing.

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How to adjust valve lash on a 1990 Geo Storm

its an Isuzu engine.
there are 3 engines.
4XE1, SOHC 1.6L (base)12valves
4XE1, DOHC , 1.6L same as above but now with 16valves.
4XE1, DOHC, 1.8L bends valves if belt snaps...
note the bad idea of ISUZU calling all 3 engine same name.
a horrid idea.
which one? the second was in USA and Canada only.
the second one was offered as the GSI. is yours that?

so I will attempt to guess for you, its the base engine.
(odds of coin toss)
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No job stated so i guess 3 times.
Just lash.
SOHC 1.6L only (FSM book quote)
Check the valve lash between the rocker arm and valve stem on both the intake and exhaust valves on the number 1 cylinder, the intake valve(s) on the number 2 cylinder and the exhaust valve on the number 3 cylinder. If the valve lash on the intake valves is not 0.006 in. (0.15mm), adjust the valve lash. If the valve lash on the exhaust valve is not 0.010 in. (0.25mm), adjust the valve lash.

1.6L twin cam has shims.
1.8L has HLA , no lash to set.

HLA= Hydraulic Lash adjusters.

I posted this before, search for it. Im only doing 1 engine.

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1 Answer

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95 Mazda b2300

Sounds like there is unburnt fuel. Could be a spark plug that's burnt out and therefore just flooding a cylinder. Which would push out fuel through the exhaust valve on the exhaust stroke. So once the fuel hits the inside of the exhaust manifold, it burns white, as if you're boiling it off. That one cylinder could have a damaged compression ring on the piston, so the fuel is bypassing it and going into the oil.

I would have your engine tuned up, and check the compressions on the cylinders.

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1 Answer

Top of the engine is ticking. friend told me it could be a valve that is clogged or stuck open and thats its not a huge problem but it might be mixing gas and oil. to me that sounds like a problme....

It sounds like hydraulic lifter noise. The lifters open and shut the valves and can be helped by using a good synthetic oil and frequent oil changes. Lash is the clearance between the valves and lifters.

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I need the engine valve spec for a 1984 chevy 6.2 diesel. We are adjusting the valves.

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1 Answer

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