vibration? - Kia K900 Forum
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post #1 of 11 Old 07-28-2018, 02:20 AM Thread Starter
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Default vibration?

Well, I've had the car long enough to pick a few nits.

The main thing that bothers me is a bit of vibration at idle. It's not huge, but it is noticeable.

Is anybody else seeing (feeling) this? The dealer says everything is performing to spec, but still I don't think a V8 in this class should have any vibration.

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post #2 of 11 Old 07-28-2018, 03:07 PM
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no vibration in mine with 20K miles; always very smooth even cold. maybe just needs a quick treatment with the recommended Techron Fuel system cleaner?
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post #3 of 11 Old 07-28-2018, 03:49 PM
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Default Vibration

Be sure and use top tier gas, doesn't have to be premium. Be sure and do what Dave H said about the Techron
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post #4 of 11 Old 07-29-2018, 10:06 AM
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Only vibration we ever had was due to the tires. Those got changed out and smooth sailing since. Now at 25k miles and still love it!
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post #5 of 11 Old 07-29-2018, 06:01 PM Thread Starter
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I've been using only Exxon premium in it, so the current gas is not the problem, I'm sure. Possibly something lower-grade went in before I got it, though.

I'm not opposed to trying an additive, but the manual just says to consult the dealer--no specific recommendation. What kind have you guys used?

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post #6 of 11 Old 07-29-2018, 07:33 PM
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Techron Concentrate Plus; any auto parts store. Use it about every 3K miles; dealers recommend it also. My dealer advised adding the 10 oz. size to the tank when level is about half; then a couple good highway drives. Good luck; easy enough to try!
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post #7 of 11 Old 07-30-2018, 01:11 AM Thread Starter
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Originally Posted by Dave H View Post
Techron Concentrate Plus; any auto parts store. Use it about every 3K miles; dealers recommend it also. My dealer advised adding the 10 oz. size to the tank when level is about half; then a couple good highway drives. Good luck; easy enough to try!
Ah, thanks for the recommendation, Dave. I'm going on a short road trip next weekend--just a couple of hours down the interstate, but it will be a good chance to try this.

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post #8 of 11 Old 07-30-2018, 01:11 PM
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How many miles on the car?
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post #9 of 11 Old 07-30-2018, 11:33 PM Thread Starter
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Just turned 3,000, which agrees with Dave's recommendation above.

I don't know exactly what it was doing in its earlier life, but since I bought it at 2 years old with 2100 miles, I'm assuming it only made short trips--prime use for carbon buildup.

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post #10 of 11 Old 08-09-2018, 12:41 AM Thread Starter
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I did the Techron cleanse on my trip. I think maybe a little improvement. I'll try it again on my next long trip.

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