Lexus IS250 4GR-FSE Engine Carbon Build-up (merged threads)
02-22-12, 07:14 PM
#721
2008 IS250, 45000 miles, about to go out of 4 year limited warranty. Had a very slight rattling noise under light acceleration from cold (never really went away but got less when the engine was hot). Didn't have a significant hot idle problem and the car never misfired or threw a code.
Dealer called today and they are going to do the piston ring fix. I was a bit leery of this as the noise was minimal but they said it would only get worse. Will post when I get the car back.
Dealer called today and they are going to do the piston ring fix. I was a bit leery of this as the noise was minimal but they said it would only get worse. Will post when I get the car back.
02-23-12, 12:14 PM
#722
Possibly, but I don't think so for several reasons:
1. The car didn't do it when new (started noticing it at around 35k).
2. No other IS250/ES350 I've driven makes this noise.
3. I don't think Lexus would replace an engine (essentially) unless they were confident there was a problem.
Let's see what happens.
1. The car didn't do it when new (started noticing it at around 35k).
2. No other IS250/ES350 I've driven makes this noise.
3. I don't think Lexus would replace an engine (essentially) unless they were confident there was a problem.
Let's see what happens.
02-24-12, 08:02 AM
#723
Intermediate
Join Date: Jan 2012
Posts: 489
Likes: 0
Received 0 Likes
on
0 Posts
apparently I've got a new shortblock 
Sooo I got the car back.
They replaced the water pump
Sounds good, starts right up as usual. Power feels the same. There's some new noises though. A higher pitched fan/pump kind of of sound (new water pump maybe?)..
One major difference is that my brakes now suck. They used to be so touchy and I could NEVER get it to the floor, now... I have to push real hard on them to get some real stopping power AND I can hit the floor.
Sooo I got the car back.
They replaced the water pump
Sounds good, starts right up as usual. Power feels the same. There's some new noises though. A higher pitched fan/pump kind of of sound (new water pump maybe?)..
One major difference is that my brakes now suck. They used to be so touchy and I could NEVER get it to the floor, now... I have to push real hard on them to get some real stopping power AND I can hit the floor.
Last edited by J3ffrey; 02-24-12 at 09:56 AM.
02-24-12, 10:13 AM
#724
apparently I've got a new shortblock
Sooo I got the car back.
They replaced the water pump
Sounds good, starts right up as usual. Power feels the same. There's some new noises though. A higher pitched fan/pump kind of of sound (new water pump maybe?)..
One major difference is that my brakes now suck. They used to be so touchy and I could NEVER get it to the floor, now... I have to push real hard on them to get some real stopping power AND I can hit the floor.
Sooo I got the car back.
They replaced the water pump
Sounds good, starts right up as usual. Power feels the same. There's some new noises though. A higher pitched fan/pump kind of of sound (new water pump maybe?)..
One major difference is that my brakes now suck. They used to be so touchy and I could NEVER get it to the floor, now... I have to push real hard on them to get some real stopping power AND I can hit the floor.
02-24-12, 11:07 AM
#727
Intermediate
Join Date: Jan 2012
Posts: 489
Likes: 0
Received 0 Likes
on
0 Posts
Did you have the block replaced? Or just the rings/etc.
02-24-12, 11:32 AM
#729
Intermediate
Join Date: Jan 2012
Posts: 489
Likes: 0
Received 0 Likes
on
0 Posts
I sent the service adviser an email letting him know about the problem so at least he knows what happened. I'm sure after all the work they did on my car they were just ready to get it the F out. Even though that's no excuse for not bleeding the brakes, I might as well just do it myself tomorrow.
02-24-12, 12:47 PM
#730
The brakes are not touched they stay in the car when you drop the subframe w drivetrain... Its weird that it happened to u.... As for the short block, its not part of any bulletin, so there had to have been something more to it.. I have the bulletin in pdf format
02-24-12, 12:49 PM
#731
I finally opened my engine to check the valves n used a bore scope to see the pistons ill post pics tonight. The valves didnt improve that much but the piston domes are totally clean 66k and no trace of carbon! I ran 16oz gm to engine clean, 32oz toyota engine clean + 16oz washer fluid @ 4k rpm. In the last week my fuel trim is down to 2.1%... damn near perfect.. I doubt ill be seeing any misfires for a long time
02-24-12, 01:05 PM
#733
Intermediate
Join Date: Jan 2012
Posts: 489
Likes: 0
Received 0 Likes
on
0 Posts
can you tell me what else comes with a short block? Does this mean all the pistons/crank/etc were also new? Or did they remove old parts and use them in the new block ? Stupid stuff like Sparkplugs are not listed on the invoice.... but I'd like to know if they were changed.
I should have asked my adviser but he was busy.