Suzeroo

I use Berryman Chemtool B12 in my cars. I put a can in a full tank of fuel about every 2 or 3 months the tank full right before the oil change. I don't know if that would make any difference in this situation in Canada. I'd like to know what "gummed up valves" means exactly. "Dirty" fuel can cause problems, but I'm surprised it is the cause. The fuel would have to be seriously contaminated or badly formulated. Why only 2 valves out of 24???

OOPS! I made a mistake - it was premium ESSO we used b4 the valve job, not Shell.

Suzeroo

Exactly. I call BS. 2 valves gummed up only? Last I checked, all fuel in Canada is virtually identical. This sounds more like bad batch of parts affecting certain ranges of vehicles.

All the valves were replaced, not just 2. We were told that this problem has only affected IS250s and not IS350s. U could b right about bad batch of parts. That's why I think we will b trading this car in, a lot sooner than we anticipated.

Sure makes u lose confidence in the Lexus brand tho. Our other Lexus, an ES300, never had any problems.

I use Berryman Chemtool B12 in my cars. I put a can in a full tank of fuel about every 2 or 3 months the tank full right before the oil change. I don't know if that would make any difference in this situation in Canada. I'd like to know what "gummed up valves" means exactly. "Dirty" fuel can cause problems, but I'm surprised it is the cause. The fuel would have to be seriously contaminated or badly formulated. Why only 2 valves out of 24???

The dealer replaced ALL the valves, not just 2. We had been using premium Shell b4 this problem. Now we r using Sunoco 94 octane.

Not sure it should or would make such a big difference.... since premium gas should be clean enough, no matter what brand!

The dealer NEVER suggested adding any cleaning solution 2 the gas, but it's certainly worth checking into.

Suzeroo

What kind of gas were you using for the first 17k miles? With the same report in your area it is probably crappy gas. If I were you I wouldn't go to Sunoco anymore.....i've never even heard of them. Try Shell, Texaco, or Chevron. (I use Shell V-Power) It's expensive but for a good reason. Not to end up where you did.

We used premium Esso gas, not sure what octane it is???

Hi-

I'm sure this topic has been discussed before on here...

My LOW TIRE light will come on even if my pressure is normal.

Probably due to the change in temp I'm assuming?

LEXUS said they were 30psi--so they made them 32psi last week.

The light came on again this am.

Am I doomed to keep checking them every week or two during the winter?

LEXUS offered to replace with NITROGEN...said it should help.

Ideas?

Opinions?

Its not my spare tire, because its just a donut spare.

Thanks!

We had the same problem - it turned out 2 b the spare tire, don't 4get 2 check that 2.

Suzeroo

Needed a valve replacement job - due 2 gummed up valves @ 28 kilometers = 17,500 miles.

Dealer said there were 7 other IS in Ontario Canada, that were in the same boat.

Our VSC light came on, then the engine light and then the engine would almost die. Had 2 turn it off and then restart it. The dealership didn't know how to fix it and eventually (after a month) sent parts to Toronto, to have the experts look at them. Apparently even tho we put in premium gas, they said it was due 2 dirty gasoline.

Since the new valves were installed we've had no more problems - yet!!! We now use only the highest octane of 94, from Sunoco.

Did any of u have this problem???

Suzeroo

If the car is under warranty during the time I own it then it will run the cheap stuff unless they can claim my cheap gas causes a problem. But I am also a person who runs that fuel system cleaner treatments in my car. For what its worth...

Brain(?):

Don't kid yourself. Here's the scenario. You come into the dealership, under warranty, with a car that traditionally has ZERO problems running hi-test fuel for the 70K miles of the warranty, and you're having trouble. So they take a look at the engine. Compression is around 75 psi, and the only way that would occur is from bad valves or bad rings. The valves are most suspect.

So they tell you that they'll take a look, but the only way that this car goes through valves is if you don't use Premium gas. So they ask "have you used Premium Gas?" Now, whatcha gonna say, because they will know for a certainty when they open up that engine.

And then they'll give you the bill for the $6 - $7K that they'll charge for a set of valves and rings to bring the engine up to spec. Or else, you'll just drive your poor car home, limping with your tail between your legs. And all because you wouldn't pony up the extra $3.50 per tank. But you'll put in some gas additive every few tankfuls in your car for roughly the same amount of money.

Go figger. I sure can't. But like Bart said -- It's yer car, you can do what you want.

larry

I own an IS250 AWD, 2006 that had a valve replacement already - under full warranty, of course.

We have used nothing but premium gas in our car from the start. We live in Canada and the dealer recommends the highest octane available, which is 94 from Sunoco.

Apparently our valves were totally gummed up - even with the premium gas!!! We were told that there were 7-8 other IS, that had this problem in Ontario, Canada.

We wanted 2 keep this car 4 a while, but now we may trade it in, when the warranty is up. Hard 2 trust it, with that kind of track record :-(

Suzeroo