Valve Clatter on 4.0L?
06-21-07, 08:26 PM
#1
Lead Lap
Thread Starter
Valve Clatter on 4.0L?
Ok so as I am becoming more familiar with JDM engines Im realizing they seem to make different noises from what Im used to with domestic, and european motors. It seems they each have their own caucaphony as it were...
Both my moms 1999 3.2TL Acura and this Lexus seem to make what I feel is an abnormal amount of valve ticking noises.
The Honda's have something called Hydraulic lash adjusters, which over time need to be corrected when the motor starts making noise, and from what little I have been able to find on the 4.0L LS motor, valve clatter on the gen 1 motors (90-94) can be a sign that the valves are badly out of adjustment but I cant find anything on 95+??
Its not that noisy, but its not the lexus level of quiet I would expect either. Im assuming I probably need to have the valves adjusted... is it possible for this happen at 66000 miles? I know my moms car has had Valve noise since she bought it at 73k miles.
Is NOT having the valves adjusted asking for trouble, or will the car continue to operate ok the way it is? I checked the oil for sludge and at least with the basic check I did at the dispstick and inside the crank-case fill hole I didnt see anything of consequence.
In another bit of irony, both this car and the Acura were sold new in Palm Beach, and a friend had noted to me that cars from there undergo alot of stop and go driving even at low mileages. I dont think its of any consequence, but I thought it bring it up anyway.
Other than this I absolutely love the car.
TIA,
Ian.
Both my moms 1999 3.2TL Acura and this Lexus seem to make what I feel is an abnormal amount of valve ticking noises.
The Honda's have something called Hydraulic lash adjusters, which over time need to be corrected when the motor starts making noise, and from what little I have been able to find on the 4.0L LS motor, valve clatter on the gen 1 motors (90-94) can be a sign that the valves are badly out of adjustment but I cant find anything on 95+??
Its not that noisy, but its not the lexus level of quiet I would expect either. Im assuming I probably need to have the valves adjusted... is it possible for this happen at 66000 miles? I know my moms car has had Valve noise since she bought it at 73k miles.
Is NOT having the valves adjusted asking for trouble, or will the car continue to operate ok the way it is? I checked the oil for sludge and at least with the basic check I did at the dispstick and inside the crank-case fill hole I didnt see anything of consequence.
In another bit of irony, both this car and the Acura were sold new in Palm Beach, and a friend had noted to me that cars from there undergo alot of stop and go driving even at low mileages. I dont think its of any consequence, but I thought it bring it up anyway.
Other than this I absolutely love the car.
TIA,
Ian.
06-30-07, 07:41 AM
#3
Driver School Candidate
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you are playing with fire to not adjust the valves on this lexus
it can and has caused very large bills to repair failure, ask me how i know
i would urge you to learn how to make this adjustment or have it done asap
regards
sam
it can and has caused very large bills to repair failure, ask me how i know
i would urge you to learn how to make this adjustment or have it done asap
regards
sam
06-30-07, 11:39 PM
#4
07-02-07, 11:58 AM
#5
Lexus Champion
more than likely you are hearing the injectors ticking. the valves normally dont' have to be adjusted until 120k and even then most of them that i've seen don't need anything.
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