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#1 Old 10-22-2013, 05:38 AM
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Engine valve adjustment

Does the MR18 need valve adjustment?

I'm at 138,000K runs O.K but don't know if it needs some adjustments


Thanks!

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#2 Old 10-22-2013, 03:56 PM
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It probably needs a valve adjustment, but these (like many Nissan motors) use shim and bucket lifters, to bring the clearance back to spec you need to order the proper thickness shim. I've explored doing it since my 1.8 has 325 000KM on it, has sounded like a TDI at idle for a long time. It can be done i just am not sure how the shimming works, whether Nissan sells just shims, or do you have to buy a whole new lifter?

Plus you have to take out the cams to put the shims in.
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#3 Old 10-22-2013, 04:29 PM
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They are not shimmed. I just read the fsm and there set size valve lifters

heres a quote from the fsm

"NOTE:
Available thickness of valve lifter: 26 sizes range 3.00 to 3.50 mm (0.1181 to 0.1378 in) in steps of 0.02
mm (0.0008 in) (when manufactured at factory). Refer to EM-111, "Standard and Limit"."

pretty shitty setup if you ask me.

First you have to measure the valve gap then take it all apart and measure the thickness of the lifter. Not something you want to do in your backyard especially if you require the use of the car, then select a thicker lifter to compensate for wear

Look officer I'm not being a smart ass I'm just saying if you caught me you were speeding too.
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#4 Old 10-22-2013, 06:05 PM
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wow sounds complecated, let me call the dealer and ask them how much...

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#5 Old 10-22-2013, 06:15 PM
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Ok, I called the NISSAN dealer

The tech said valves do not need adjustment unless there's something wrong, and I would have to bring it in and let them do an engine diagnostic to see if there's any problems.

and as far as "How Much" $$$$$$$$ he said it depends on the problem

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#6 Old 10-22-2013, 10:33 PM
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figure 100$ an hour plus parts and shop fee so id probably say 600$ ish at least

Look officer I'm not being a smart ass I'm just saying if you caught me you were speeding too.
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#7 Old 10-22-2013, 10:47 PM
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If it aint broke, dont fix it.

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#8 Old 10-23-2013, 12:27 AM
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Lol don't need valve adjustment? They're not hydraulic lifters. Cams will wear the lifters down in a short time to the point that they will need it. Not only does it produce an audible noise when they're out of adjustment but reduces power a bit since you aren't getting full lift. They make a special tool that allows you to slip shims under the lifters.
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#9 Old 10-23-2013, 03:36 AM
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Quote:
Originally Posted by jswilson1987 View Post
figure 100$ an hour plus parts and shop fee so id probably say 600$ ish at least
probably...and even if I had factory warranty, they won't fix it unless they know for a fact something is broken

Quote:
Originally Posted by Tubtub View Post
If it aint broke, dont fix it.
I agree 100%, but there's also that little voice on the back of my head saying
YOU HAVE A PROBLEM!!!! "MUAHAHAHA!!!!"
and I have the other voice saying
"don't worry...its normal, you don't burn oil or anything

Quote:
Originally Posted by 07Versa6MT View Post
Lol don't need valve adjustment? They're not hydraulic lifters. Cams will wear the lifters down in a short time to the point that they will need it. Not only does it produce an audible noise when they're out of adjustment but reduces power a bit since you aren't getting full lift. They make a special tool that allows you to slip shims under the lifters.
are hydraulic lifters more quiet than solid lifters?
and if we had hydraulic lifters then we should not hear ticking sounds? because that would mean we have a problem for sure.

the valve ticking sound:
I can hear it when I have the windows up, and the radio down to level 5, just on idle or drivng @40MPH or less
Once I go 45MPH or more the tire road noise and wind noise drowns out the sewing machine valve noise. when I drive the engine for an hour, all I hear is valves.

at this point to really find out if there's a problem, I would need to run a compression test on all cylinders.

or crack the window open or turn the radio level 6 or higher =)

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Last edited by BluV3R18; 10-23-2013 at 03:38 AM.
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#10 Old 10-23-2013, 03:44 AM
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when I called the dealer, i think all the tech heard was

"my car sounds like bangbangbangtickticktick...well no bang but ticking when is cold, what's wrong and how much to fix it?"

bring it in and we will let you know


it is hard to diagnose a car over the phone and over the internet


will keep you guys posted if I find out any more info

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