Anyone ever seafoamed your 3GS??
#2
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I just have put it in the gas every 15k.....every three months for me. With a low milage car, I wouldn't run it in the vacume lines on mine. I heard that Direct Injection needs to be cleaned more often than FI. Can anyone else chime in on this?
#3
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I'm not sure how well the various vacuum lines would work either, unless they feeds air equally into all of the cylinders.
There is a TSB for this (IS250 and GS300), top engine cleaning, and Lexus' fix involves pulling all of the plugs and marinating the valves in some super solvent for quite a long time.
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I've run it in the gas tank and added to oil a few days prior to scheduled oil change. Doesn't seem to make any difference in my opionion. I have a 08 460 with over 30K on the odometer.
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Seafoam or anything else for that matter in the gas won't clean the intake valves in the slightest on a direct injection engine without the secondary port injectors on the GS350/460.
I'm not sure how well the various vacuum lines would work either, unless they feeds air equally into all of the cylinders.
There is a TSB for this (IS250 and GS300), top engine cleaning, and Lexus' fix involves pulling all of the plugs and marinating the valves in some super solvent for quite a long time.
I'm not sure how well the various vacuum lines would work either, unless they feeds air equally into all of the cylinders.
There is a TSB for this (IS250 and GS300), top engine cleaning, and Lexus' fix involves pulling all of the plugs and marinating the valves in some super solvent for quite a long time.
#10
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i know it doesn't harm the engine.
but if it doesn't work, no point spending money on it
i'm just asking because BinaryJay mentioned something about seafoam and direct injection not doing squat
#12
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Think about it, you can put the most magical cleaning stuff into your fuel, but since the fuel is injected past the intake valves and doesn't get anywhere near them how is it going to clean anything? It may help, somewhat, to clean the exhaust valves but those aren't usually the problem.
#14
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I think it goes mostly like this:
- Spark plugs out.
- Dump cleaner in
- Turn the engine over manually a few times
- Let marinate
- Drive for a while
- Change the oil
- Drive for a while
- Change the oil again (oil gets changed twice as part of the Lexus procedure).
They have it listed as taking a few good hours to complete but the majority of that time is just waiting so I'm not sure how much they should bill for it if you went in and asked for it to be done not under warranty. Make sure they aren't billing you for the marination time which is a large percentage of it.
There are some induction cleaning methods that claim now to clean intake valves, there is one from Terraclean... it involves not only running cleaner through the fuel system but also spraying it directly into the throttle body while the car is running... though I'm not exactly sure how they do that, probably with a long rod that they insert past the MAF which sprays the chemical. I have no idea how well this works but if you're going to get a service like this performed make sure that they aren't just adding stuff to the fuel line and are doing something through the air intake as well.
Hopefully this completes clearing up the idle gremlins from the car, it's not terrible but it's noticeable sometimes... if the procedure is good on this engine for another 100,000 km I don't have any problem payiing somebody a couple hundred bucks to do it again every 100K.