Engine Knock/Tick - Dodge Challenger Forum: Challenger & SRT8 Forums
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#1 (permalink) Old 08-05-2008, 07:43 PM
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Engine Knock/Tick

I am not a gear-head so I apologize if this is an elementary topic. I have noticed lately (today) that I have a knock/tick in my engine bay from 1500 rpm and lower....at idle there is no noise and any higher than 1500 rpm I can not hear any noise.... but that could be because the engine is louder at the higher rpm than the tick/knock is. I have not noticed the sound before, but that does not mean that it wasn't there all the time. I have appx 800 miles on the car. I recently switched the oil to Royal Purple 0-40W. Should I be concerned about this noise? I will most likey bring it to the dealer to have them look but I would also appreciate the forum's advice/expertise. Given the recent tropical storm I have not been able to run it tonight to see if the sound goes away after it is heated up. Thoughts please.....
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#2 (permalink) Old 08-05-2008, 07:59 PM
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Re: Engine Knock/Tick

Did the noise start before or after the oil change? I would have kept using the Mobil 1 personally, Royal Purple is a good synth, however, they recommend you not using their product until the engine has at least 3000 miles on it. May be something to that, maybe not. Members?

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#3 (permalink) Old 08-05-2008, 08:09 PM
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Re: Engine Knock/Tick

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Originally Posted by Jack09 View Post
Did the noise start before or after the oil change? I would have kept using the Mobil 1 personally, Royal Purple is a good synth, however, they recommend you not using their product until the engine has at least 3000 miles on it. May be something to that, maybe not. Members?

Jack
I am not sure if it was there before the oil change or not. Can changing from one sythetic to another cause problems/noises with the engine? If so I'll swap it out to the Mobil 1 tomorrow. I hope it's that simple. My other vehicles are a Dodge diesel and an Escalade so I can't compare their engine noise to the Challenger.....is a small ticking sound normal? It doesn't happen at idle so I hope this is a normal sound of the engine.
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#4 (permalink) Old 08-05-2008, 10:22 PM
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Re: Engine Knock/Tick

Id hit the shop up and have them look at it asap just to cover yourself.
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#5 (permalink) Old 08-05-2008, 10:30 PM
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Re: Engine Knock/Tick

The guys with Charger SRTs have experienced a similar problem. They say that a ticking sound is common in the Hemis and can be attributed to any one of the following conditions:

1. Fuel injectors.
2. Oil squiters on the piston skirts. Last year there was a service bulletin to use 15W-
50 oil in weather above 50F instead of 0w-40. TSB 09-011-06.
3. High valve spring pressure, hardened valve seats and stainless steel valves.

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#6 (permalink) Old 08-05-2008, 11:03 PM
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Re: Engine Knock/Tick

funny now you mention it I have the same noise coming out of my magnum at times as well.
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#7 (permalink) Old 08-06-2008, 01:16 AM
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Re: Engine Knock/Tick

yea this is known as the "Hemi Tick". Its no problem at all

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#8 (permalink) Old 08-06-2008, 02:31 AM
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Re: Engine Knock/Tick

My Ram has it. The Hemi Tick. Just add 2 parts Foot and 1 part throttle and it goes away.

09 SRT8 6 Speed on the way
2005 Hemi Sport Ram
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#9 (permalink) Old 08-06-2008, 04:17 AM
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Re: Engine Knock/Tick

I also think it has someting to do with the PCV system. I had the catch can and I swear the Hemi tick went away. Billet Technology: Catch Can

08 SRT8 #6077, InTune, AFE CAI, 180 TT, Catch Can, Cabin Air Filter, Speedlogix Strut Brace, Hawk HPS brake pads. Best time of 12.78@109.22
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#10 (permalink) Old 08-06-2008, 05:45 AM
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Re: Engine Knock/Tick

The Hemi's a time bomb,baby! No worries, very common.

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Despite all my rage, I am still just a rat in a cage!
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