*****UPDATE on engine ticking******
02-18-12, 10:36 PM
#32
Instructor
So I'm guessing both heads got taken to the machine shop?
Was it exhaust valves? Were the buckets damaged?
Do you have a probable cause?
More info please, your story is uncommon for that mileage...
Thanks
Was it exhaust valves? Were the buckets damaged?
Do you have a probable cause?
More info please, your story is uncommon for that mileage...
Thanks
02-18-12, 10:40 PM
#33
If you haven't read his prior story... It was about his engine making ticking noise and loss of power/fuel economy. He decided to take it to the Lexus dealer to get the valves adjusted. The dealer found out 2 of his lifters were no bueno. After replacings those and valve adjustments his car became the "beast".
02-18-12, 11:39 PM
#34
If you haven't read his prior story... It was about his engine making ticking noise and loss of power/fuel economy. He decided to take it to the Lexus dealer to get the valves adjusted. The dealer found out 2 of his lifters were no bueno. After replacings those and valve adjustments his car became the "beast".
02-19-12, 06:07 AM
#35
02-19-12, 08:41 AM
#36
Instructor
I did read his story, maybe Jawnpawn thinks it's funny.
In twenty years of working on Toyotas I have never seen a UZ with burnt up valves, I just wanted to know the reason, my guess is that it was oil starved, if that is the case you may have a motor that has lost its longevity.
That's cool if Jawnpawn wants to pass on my inquiry, I did not believe it to be too technical.
...better you than me.
Lol
In twenty years of working on Toyotas I have never seen a UZ with burnt up valves, I just wanted to know the reason, my guess is that it was oil starved, if that is the case you may have a motor that has lost its longevity.
That's cool if Jawnpawn wants to pass on my inquiry, I did not believe it to be too technical.
...better you than me.
Lol
02-19-12, 04:59 PM
#37
Guy, guys, guys...didn't he mention rings were replaced? Are these the piston rings? If so, NO WONDER why he gained power because his compression is restored close to new engine condition! Worn rings = loss of compression = loss of power and bad gas mileage. I am sure the other items helped that he got done but the real power gain (or restore) came from replacing the rings. Of course dropping 1500 - 2000 on engine restoration/repair will restore lost power. Any one of us can do this.
The following users liked this post:
Tammy4473 (05-15-23)
02-19-12, 10:21 PM
#39
I did read his story, maybe Jawnpawn thinks it's funny.
In twenty years of working on Toyotas I have never seen a UZ with burnt up valves, I just wanted to know the reason, my guess is that it was oil starved, if that is the case you may have a motor that has lost its longevity.
That's cool if Jawnpawn wants to pass on my inquiry, I did not believe it to be too technical.
...better you than me.
Lol
In twenty years of working on Toyotas I have never seen a UZ with burnt up valves, I just wanted to know the reason, my guess is that it was oil starved, if that is the case you may have a motor that has lost its longevity.
That's cool if Jawnpawn wants to pass on my inquiry, I did not believe it to be too technical.
...better you than me.
Lol
Car runs amazing and looks amazing, ... Sounds like you may potentially have this problem or are coming up on it, seeing as your so anxious to get a reply, wish u luck with yours....
Last edited by DosyBoy; 02-19-12 at 10:42 PM.
02-19-12, 10:23 PM
#40
Guy, guys, guys...didn't he mention rings were replaced? Are these the piston rings? If so, NO WONDER why he gained power because his compression is restored close to new engine condition! Worn rings = loss of compression = loss of power and bad gas mileage. I am sure the other items helped that he got done but the real power gain (or restore) came from replacing the rings. Of course dropping 1500 - 2000 on engine restoration/repair will restore lost power. Any one of us can do this.
Last edited by DosyBoy; 02-19-12 at 10:44 PM.
The following users liked this post:
Tammy4473 (05-15-23)
02-19-12, 10:24 PM
#41
I did read his story, maybe Jawnpawn thinks it's funny.
In twenty years of working on Toyotas I have never seen a UZ with burnt up valves, I just wanted to know the reason, my guess is that it was oil starved, if that is the case you may have a motor that has lost its longevity.
That's cool if Jawnpawn wants to pass on my inquiry, I did not believe it to be too technical.
...better you than me.
Lol
In twenty years of working on Toyotas I have never seen a UZ with burnt up valves, I just wanted to know the reason, my guess is that it was oil starved, if that is the case you may have a motor that has lost its longevity.
That's cool if Jawnpawn wants to pass on my inquiry, I did not believe it to be too technical.
...better you than me.
Lol
02-20-12, 09:29 AM
#43
Instructor
Jawnpawn, the thing that sticks out to me in your story is, you say lifters were replaced. Well the UZ motor has no lifters. Cam lobes ride on buckets and shims that are in direct contact with the valve stem.
Also you said that two valves were replaced, Without removing the head(s) valves would be impossible to replace...Or did they remove the heads?
My motor is fine with 210,000 miles and compression between 175psi and 181psi in all cylinders.
I love Toyota quality...
Also you said that two valves were replaced, Without removing the head(s) valves would be impossible to replace...Or did they remove the heads?
My motor is fine with 210,000 miles and compression between 175psi and 181psi in all cylinders.
I love Toyota quality...
02-20-12, 03:59 PM
#45
Jawnpawn, the thing that sticks out to me in your story is, you say lifters were replaced. Well the UZ motor has no lifters. Cam lobes ride on buckets and shims that are in direct contact with the valve stem.
Also you said that two valves were replaced, Without removing the head(s) valves would be impossible to replace...Or did they remove the heads?
My motor is fine with 210,000 miles and compression between 175psi and 181psi in all cylinders.
I love Toyota quality...
Also you said that two valves were replaced, Without removing the head(s) valves would be impossible to replace...Or did they remove the heads?
My motor is fine with 210,000 miles and compression between 175psi and 181psi in all cylinders.
I love Toyota quality...