95 Lexus LS400 smokes and now hesitates

Tiny
HARDY5400
  • MEMBER
  • 1995 CHEVROLET CAVALIER
I have a 1995 Lexus LS 400 with the V8 engine. The car is almost at 150,000 miles.
Recently, the car has started to blow a lot of blue smoke in the mornings - but not every morning. After a few minutes there would be no more smoke. Recently, at the end of a 70 mile freeway drive, the check engine light came on. When I got onto city streets, the car was running rough, as if it was missing. I thought perhaps I had a loose wire. I took it to my mechanic and left it for the morning. He callled and announced that two of the spark plugs were coated with oil, that they had cleaned the plugs and reset the computer.

We have been discussing the need for a valve job or doing the valves and the rings in the near future. Rough estimates are in the $2,200 to $2,500 range. All of a sudden, I'm having misgivings.

First, the check engine light came back on almost immediately. The car runs very rough in Drive, but if I put it inot 3rd or 2nd, it seems to smooth out. Other times the light will blink.

Should I even be driving the car? I was hoping to get to and from work for one more week. After that, I have to go out of town for a week, and they will have plenty of time to work on the car.

I'm also concerned that their original diagnosis was a little too cavalier - maybe I just need the valves done and not the rings - maybe the repair is in the neighborhood of a few hundred dollars, not thousands.

What are your thoughts?
Hardy
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Saturday, February 24th, 2007 AT 10:04 AM

6 Replies

Tiny
KIN CHAN
  • MEMBER
Give me the CODES from the chk engine lite !. No code no leads. As far as oil foul and blue smoke.U are pretty much into thousands. Not hundred. If anyone quote u hundreds --> turn around and RUN. Sounds too good to be true is too good to be true. Msg me and I'll follow up.I'm toyota train up to 05'. So.95' no problem!
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Saturday, February 24th, 2007 AT 12:28 PM
Tiny
HARDY5400
  • MEMBER
Don't have the codes.
How do I get them?
Hardy
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Saturday, February 24th, 2007 AT 3:03 PM
Tiny
KIN CHAN
  • MEMBER
Whoever as u said the mechanic that quote u the price for the repair should have the codes or he should pull a quote out b4 anything else. Cuz thats ur paid info. Another word thats ur property.U've owned it
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Saturday, February 24th, 2007 AT 5:21 PM
Tiny
SAPHFIRETECH
  • MEMBER
Anytime a couple cylinders have oil fouled spark plugs and oil burning in the morning, with the high miles you have on the car are not good from your pocket book's stand point. How good of shape is the transmission in?
How about all the rest of the drive train?
You have 3 options in my mind:
#1 have the source of the oil intrusion problem solved. (Big money for the shop)
This can be a very expensive band aid solution, when you open up a high mileage motor, and just replace the most worn out parts, it has a tendency to cause many other problems to occur, that you will want to blame on the repair shop. Not a good choice.
#2 Replace the engine with a re manufactured unit.
This is very expensive, but thousands less than a new unit. But here is the gamble: new renewed power from that motor could kill the transmission.
But at least you know you have a fully re conditioned motor.
#3 My Choice, install a couple plugs that oil foul, put up with the smoke, and drive it until you can get new ride. If you repair this one, it could eat you alive, or be your best friend. Your gamble, I would rather toss it!
Cheers!
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Thursday, March 1st, 2007 AT 10:12 PM
Tiny
HARDY5400
  • MEMBER
I've been told by the Lexux dealer that the trouble you describe is very rare for the LS 400 V8. Their opinion is that it will be a relatively simple valve job. The rest of the car is very tight.
Thanks
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Friday, March 2nd, 2007 AT 10:13 AM
Tiny
MMARTIN030
  • MEMBER
I have a 95 Lexus LS400 and I am only giving my opinion based on me having exact thing happen, spent way to much on unneccessary repairs only to come and find out it was the cars ECU. I heard that oh it couldn't be that, how could the ECU make the car smoke? Just google it and you'll see, the thing that really made me think that was the the Check Engine light being on, then flashing, and running really rough. Once I had the redone ECU, which is a common problem w/ these Lexus (leaking capacitors) the car ran like a brand new car. I had all kinds of new things put on and was told I even needed a new engine, just check it out at least, cheap to check, and you can even get a new one on eBay or a service where you mail the ECU into.
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Thursday, June 5th, 2014 AT 5:22 PM

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