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Old 03-23-2014, 11:21 AM   #1
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engine noise

i have a jeep jku ...and under exceration there is a loud pinging noice i hear it through all gears and when it is under load( going uphill) it gets worse....anyone have any sugestions im taking it to the dealer on thursday, but they seem to have no idea....could it be timing,pre detionation, or somthing else
thanks

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Old 05-08-2014, 08:22 PM   #2
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any updates? my 2014 does the same thing! 10000 miles on mine..

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Old 05-08-2014, 10:08 PM   #3
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Try running 89 octane or better. Also a different gas station might be the fix. It's sounds like pre detonation.
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Old 05-09-2014, 05:15 AM   #4
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I wonder if the knock sensor is bad and it hasn't thrown a code.
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Old 05-09-2014, 05:38 AM   #5
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My 07 pinged uphill/hard acceleration. Techron helped a lot. Cured running 93 octane/SC perf tune.

Also check the spot welds on the exhaust heat shield.
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Old 05-10-2014, 06:09 AM   #6
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I certainly don't want to start another gas thread, or hijack this one.
I am in the camp of: if I pay $34,000, and I need to run 93 octane, Chrysler/fiat will have a used wrangler on their hands. No way the sticker says run 87....87 it is.
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Old 05-10-2014, 06:15 AM   #7
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Quote:
Originally Posted by dewey7015 View Post
I certainly don't want to start another gas thread, or hijack this one.
I am in the camp of: if I pay $34,000, and I need to run 93 octane, Chrysler/fiat will have a used wrangler on their hands. No way the sticker says run 87....87 it is.
You're right, if it is pinging with 87 Octane gas and the vehicle was designed to run on 87 Octane have the dealer check it out. It should run problem free on 87 Octane if it calls for it.
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Old 05-10-2014, 10:45 AM   #8
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dealer told me that it was "normal, because they lean out the engines to get better gas mileage" He didn't really have an answer for me when I asked what happens in 100,000 miles, and i need some severe engine work...just looked at me.
I will be hanging on to this jk, until i can justify taking the hit to trade for the deisel! lol
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Old 05-10-2014, 10:52 AM   #9
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Sounds like your lugging the engine, try downshifting.
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Old 05-10-2014, 11:29 AM   #10
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Mine started doing it with the lift and bigger tires. I've had to change my shift points. I use to shift to sixth around 50. I noticed a lot of pre ignition after the tires and lift. Now I shift latter around 60 into sixth. Guess regearing will get it back to where I think it should be.
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Old 05-10-2014, 12:14 PM   #11
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i have tried alot of different things 93 octaine, fuel treatment only sunoco gas, but nothing worked i had it in 2 weeks ago and they did an oil comsumption test on it and it was burning oil..in 500 miles it was down 1/4 of a quart(when they origanlly drained the oil it was 1.5 quarts low in 2000 miles) they founf a bad ring seal in the 6th piston..but that hasnt fixed it yet...it goes back in on tuesday and now they might just replace the entire motor...ill let u all know how i make out

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