Lexus IS250 4GR-FSE Engine Carbon Build-up (merged threads)
#1276
#1277
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Join Date: Apr 2012
Location: CA
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85 pages long so far for this serious problem. I feel bad for 250 owners having to deal with this.
Does this issue only affect the 2nd Gen IS250 or does it also affect the 3rd Gen IS250. If it does not affect the 3rd Gen IS250 what did they do to the engine design to eliminate or solve the problem. I know someone interested in a 2nd Gen IS250 and possibly a 3rd Gen but I was not sure what to tell them about the 3rd Gen IS250 with the carbon buildup.
Does this issue only affect the 2nd Gen IS250 or does it also affect the 3rd Gen IS250. If it does not affect the 3rd Gen IS250 what did they do to the engine design to eliminate or solve the problem. I know someone interested in a 2nd Gen IS250 and possibly a 3rd Gen but I was not sure what to tell them about the 3rd Gen IS250 with the carbon buildup.
I've told them about my idling issues and engine failure several times but they always make up excuses as to what the problem is.
My engine failed on me August 4th. I had the vehicle towed to the dealership. They did their tests found nothing/no codes. They told me they couldn't run misfire/engine tests until the water pump was fixed because it was leaking.
I didn't want to pay Lexus for any services so I'm getting everything fixed (water pump, drive belt) at a local mechanic (costing me $680).
Should I take it to Lexus and ask them to test for the engine misfiring? Not sure what to do since they just keep making excuses.
Next excuse I know they will probably give me is that the engine was damage because it was running with no coolant. But I know my engine didn't over heat because the temp was fine the whole time.
Last edited by 250user; 08-06-15 at 09:23 AM. Reason: specifying the year of my vehicle
#1278
Thank you for the response. I guess I better get this looked at ASAP. How hard is it to change them out your self? I have minimal mechanical experience. The biggest job I have done is replace the valve stem seals on a Toyota 2.4l 4cyl... I imagine this requires roughly the same amount of work? Is there a special tool needed for the cam gear to lock them in place before install or something like that?
#1279
Well I have a 2007 IS250. Do I have any chance of getting Lexus to fix this issue?
I've told them about my idling issues and engine failure several times but they always make up excuses as to what the problem is.
My engine failed on me August 4th. I had the vehicle towed to the dealership. They did their tests found nothing/no codes. They told me they couldn't run misfire/engine tests until the water pump was fixed because it was leaking.
I didn't want to pay Lexus for any services so I'm getting everything fixed (water pump, drive belt) at a local mechanic (costing me $680).
Should I take it to Lexus and ask them to test for the engine misfiring? Not sure what to do since they just keep making excuses.
Next excuse I know they will probably give me is that the engine was damage because it was running with no coolant. But I know my engine didn't over heat because the temp was fine the whole time.
I've told them about my idling issues and engine failure several times but they always make up excuses as to what the problem is.
My engine failed on me August 4th. I had the vehicle towed to the dealership. They did their tests found nothing/no codes. They told me they couldn't run misfire/engine tests until the water pump was fixed because it was leaking.
I didn't want to pay Lexus for any services so I'm getting everything fixed (water pump, drive belt) at a local mechanic (costing me $680).
Should I take it to Lexus and ask them to test for the engine misfiring? Not sure what to do since they just keep making excuses.
Next excuse I know they will probably give me is that the engine was damage because it was running with no coolant. But I know my engine didn't over heat because the temp was fine the whole time.
#1281
Driver School Candidate
Join Date: Jun 2012
Location: illinois
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Well I have a 2007 IS250. Do I have any chance of getting Lexus to fix this issue?
I've told them about my idling issues and engine failure several times but they always make up excuses as to what the problem is.
My engine failed on me August 4th. I had the vehicle towed to the dealership. They did their tests found nothing/no codes. They told me they couldn't run misfire/engine tests until the water pump was fixed because it was leaking.
I didn't want to pay Lexus for any services so I'm getting everything fixed (water pump, drive belt) at a local mechanic (costing me $680).
Should I take it to Lexus and ask them to test for the engine misfiring? Not sure what to do since they just keep making excuses.
Next excuse I know they will probably give me is that the engine was damage because it was running with no coolant. But I know my engine didn't over heat because the temp was fine the whole time.
I've told them about my idling issues and engine failure several times but they always make up excuses as to what the problem is.
My engine failed on me August 4th. I had the vehicle towed to the dealership. They did their tests found nothing/no codes. They told me they couldn't run misfire/engine tests until the water pump was fixed because it was leaking.
I didn't want to pay Lexus for any services so I'm getting everything fixed (water pump, drive belt) at a local mechanic (costing me $680).
Should I take it to Lexus and ask them to test for the engine misfiring? Not sure what to do since they just keep making excuses.
Next excuse I know they will probably give me is that the engine was damage because it was running with no coolant. But I know my engine didn't over heat because the temp was fine the whole time.
#1283
Driver School Candidate
Join Date: Nov 2014
Location: IN
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Thanks
Rakesh
#1285
My car seems to have developed this problem. Rough idle once warmed up. Error P0303 always comes up. As per carfax, car was manufactured on 08/09/2006 and delivered to dealer on 09/01/2006. First sold on 04/21/2007. Does that mean I have till April 2016 to get the engine fixed by the recall?
Thanks
Rakesh
Thanks
Rakesh
#1286
Piston rings are very directly related. Low tension rings allow excess combustion gases to pass down into the block, later along with oil vapors those gases recirculate thru the PCV and down the intake manifold past the valves.. Higher tension rings and revised pistons reduce the blow by, reducing PCV flow.
#1288
The engine can last, its not a wear issue its a driveability issue. There are things you can do, some ppl here have tried seafoam in the intake etc.
Audi does some procedure where they blast wallnut shells at the top of the valves..
Ive put on a set Megan racing exhaust manifold that have no cats, and ran washer fluid like meth injection through the intake at 4000 RPM. I have the pictures after posted here earlier on. It was spotless afterwards hasnt missed since.
This is a more delicate approach because if you haven't done it before, there's a small chance he could Hydro lock in the engine
#1289
#1290
How To Tuesday
Here's some more helpful info...
https://www.clublexus.com/how-tos/a/...mize-it-367282
https://www.clublexus.com/how-tos/a/...mize-it-367282