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-   -   Hemi tick finally cured (http://www.jeepgarage.org/f187/hemi-tick-finally-cured-37511.html)

dmsfun 02-18-2012 10:11 AM

Hemi tick finally cured
 
76k on my Hemi and have always run full synhetic oil, changed it and used injector cleaner every 5k and only run top tier 89 octane, and the tick would never go away. New EGR helped but still made the noise. It is time for an oil change after 5k on Valvoline synpower, so I added 10 oz of Seafoam to the old oil. WIthin 15 miles of driving the tick is totally gone, and the MDS is so smooth you cannot even tell when it switches on and off. It seems the lifters in the Hemi get sticky after a while and the Seafoam loosens up deposits and frees them up. I'll drive it another 20 miles or so before changing the oil with Synpower, and can't wait to feel how smooth is runs !! I was a bit of a skeptic until today about Seafoam, but am sold on it now. Just don't use it on any older motor that has any oil leaks, or it will make them worse.

Chaoul1 02-18-2012 10:46 AM

Re: Hemi tick finally cured
 
When MDS kicks in I can definitely feel it. I'll try this out and see if it fixes this symptom. I'll also be changing my EGR Valve shortly.

dmsfun 02-18-2012 10:52 AM

Re: Hemi tick finally cured
 
This does the trick for smoothing the MDS; I am now certain it is the lifters causing the hemi tick for sure, and with 4 cylinders shut down, the sticky lifters are that much more noticable.

J13ntv 02-18-2012 10:56 AM

Re: Hemi tick finally cured
 
This is what I have read about the hemi tick..

~~~~~~~~~~~~~~~~~~~~

Remember that the Hemi tick consists of 3 separate noises . 1) the injectors make noise due to lack of lubricity in the fuel. ACES IV addresses that (Fuel Additive). 2) Intake and especially exhaust valves are ticking against the valve seats because they have no cushion left from the fuel. No more lead (obviously gone since Jan 1 1986) and not even any sulfur….that is a high pressure lubricant. Mix that with 10% ethyl alcohol and you have a really bad mix. Hammering basically metal to metal. 3) the short piston skirt on the hemi causes the piston to rattle in the bores in idle. This is why they add the moly coat to the skirt so that it will quiet down. As the engine gets some miles on it, the piston slap will get louder.

dmsfun 02-18-2012 10:56 AM

Re: Hemi tick finally cured
 
ALso, when you change the EGR, do not follow the instructions and pictures posted by in the forum how to. All you have to do is remove the upper bolt, then you can rotate the EGR all the way to the left to access the lower bolt, which comes out and goes in easily clearing the alternator. You dont even have to loosen the lower bolt to rotate it, as it will move after you pull on it. Took about 15 minutes to do.

dmsfun 02-18-2012 11:01 AM

Re: Hemi tick finally cured
 
Quote:

Originally Posted by J13ntv (Post 576367)
This is what I have read about the hemi tick..

~~~~~~~~~~~~~~~~~~~~

Remember that the Hemi tick consists of 3 separate noises . 1) the injectors make noise due to lack of lubricity in the fuel. ACES IV addresses that (Fuel Additive). 2) Intake and especially exhaust valves are ticking against the valve seats because they have no cushion left from the fuel. No more lead (obviously gone since Jan 1 1986) and not even any sulfur….that is a high pressure lubricant. Mix that with 10% ethyl alcohol and you have a really bad mix. Hammering basically metal to metal. 3) the short piston skirt on the hemi causes the piston to rattle in the bores in idle. This is why they add the moly coat to the skirt so that it will quiet down. As the engine gets some miles on it, the piston slap will get louder.

THat is a theoretical explanation that some have proposed. The experimental proof with my hemi is that I have no tick or valve train noise whatosever now, all you hear is smooth V8, and that is with old worn oil. Try it is all I can say.

tom58 02-18-2012 11:03 AM

Re: Hemi tick finally cured
 
seafoam is 100 % paraffin oil isnīt it?? thatīs what the label on the bottle says,iīve heard.can anybody confirm that??

dmsfun 02-18-2012 11:14 AM

Re: Hemi tick finally cured
 
It is petroleum based solvent on the label; paraffin is also a pertoleum product but it says nothing about the formulation.

tom58 02-20-2012 10:53 AM

Re: Hemi tick finally cured
 
will it have the same affect when added to the fuel??

scootter82 09-10-2012 04:46 PM

Re: Hemi tick finally cured
 
I'm curious to know if the redesigned 09 5.7L is plagued by the "HEMI Tick"? Cause it sounds like I have a manifold leak somewhere or something....It's got 74k miles on it, if that means anything.

Rexie1983 04-24-2013 09:07 AM

Re: Hemi tick finally cured
 
Hi Guys, in all about the Hemi tick. I just want to know on why is it that the tick is gone when it idles but as soon as i start driving off the tick is back and goes faster as the revs goes up? Even when im in a low gear you can hear it when giving bit throttle ( not to much so that she gears back ) then i hear it also, when the MDS system activates you can even hear it louder. Does anyone have a cure for that irritating sound? Please.

cornax 06-03-2013 12:00 PM

Re: Hemi tick finally cured
 
I have a 2010 5.7 with 32,000 miles. Haven't noticed tick. Just changed plugs and did notice slight improvement in gas mileage. Did notice difference in old plugs based on whether they came out of the four that run all the time and the four that are shut down by MDS


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