I have an 08 with 37k miles on it. 6 speed. It has had a ping issue since I bought it with 15.5k miles on it. the dealer never could figure it out. Now I am past the warranty and it seems to be getting worse (summer blend gas I think). Any ideas for me, I am worried this is going to cause serious issues down the road.
thanks!!

 

Having same problem.

 

I've heard switching to 5w-30 can help, but haven't done it...anyone confirm?

 

If the motor's burning oil running the thin 5W20 Chrysler specifies, then the slightly thicker 5W30 will reduce the amount of oil getting past the rings & valve stem seals. Excessive quantities of oil entering the combustion chambers causes deposits of carbon to build up on the piston tops, valves and cylinder heads and these deposits can cause pinging (contrary to popular belief that the carbon deposits glow & thus cause the fuel/air mixture to pre-ignite, the real reason is that the deposits take up space and reduce the volume of the combustion chamber, thus effectively increasing the compression ratio and encouraging detonation).

Carbon deposits can be removed from the combustion chamber by using various upper cylinder cleaning products readily available, however if the motor's burning a lot of oil then the change from 5W20 to 5/10W30 would only make a small difference to oil consumption, & you'd really need to change to a thicker 40 or 50 weight oil to really see a noticable improvement in oil consumption.

 

I agree with this. Try a product called SeaFoam. Just be ready for a huge cloud of smoke.

 

What octane fuel are you running? I would put in the top grade several fill ups in a row and see if that makes a difference.

 

Mine has been pinging lately. I am gonna throw some more Seafoam into the tank and even suck in another 1/2 can in through the Vacuum line again. . Just not certain if I will throw in a 1/3 of a can of the seafoam into the oil before I change it??? Also, I am gonna take apart my throttle body and clean it out as well to clean out any deposits. Then I will throw in a few tanks of the high octane fuel to help clean out the deposits.


I talked the stealership about my pinging a few times and tried that throttle body flush/injector flush at the stealership 2 years ago ($130.00) it helped somewhat.. BUT they want $246.00 to clean out my throttle body and run some chemical through my fuel injector lines this time....

If this does not help, my next step will be to change out the spark plugs and wires and go as far as switching out my knock sensor!

 

How To Seafoam Your Jeep:

Part One: Injector Cleaning

this is the easiest part of the process. Simply drive to the gas station and completely fill up your tank with 91+ octane gasoline as usual. Take 1 of the 2 cans of seafoam in the requirements above. This can of seafoam will be poured directly into your gas tank. Now, seafoam makes a great product but they didn't think too hard when they designed their can. You need a funnel in order to dump it into your gas tank. Do not try to be cool and try and beat gravity by jamming the can into your gas tank. I tried that. All I got was a car that smelled like gas and wasted seafoam on the ground. Take the long skinny funnel, put it in your gas tank, shake the can of seafoam up and pour the entire can of seafoam into the tank. Then, take your car for a nice ride so the seafoam swishes and mixes in your gas tank. The seafoam will clean out your injectors nicely. Try and run this tank pretty low before filling up so you don't dilute the mixture with more gasoline. This way, you get the maximum cleaning power of seafoam.



Part two: Top End cleaning

here comes the fun part: cleaning the engine internals! NOTE: park your Jeep in a VERY WELL VENTILATED area for this step as high amounts of toxic fumes will be pouring out of your car.

As you recall, we have half a can of seafoam left. This half a can will be used to clean out your cylinder banks. In order to do this, we need to locate a vacuum line to directly feed the seafoam into the engine. The favorite vacuum line is the brake booster line. The brake booster is the big, black saucer shaped object behind the brake fluid holder against the driver's side firewall in case you can't tell by the picture.

We will be sucking the seafoam into the brake booster hose(Note: some people prefer to suck the seafoam in through the PCV line. this is also acceptable, although I have never done it.)

First thing you want to do is start the Jeep and let it warm up until the engine reaches closed loop. Basically, start your Jeep and wait for the engine to warm up to normal operating temperatures (5 - 10 minutes depending on outside temperature). After the engine is nice and warm, turn the Jeep off. Now we're going to disengage the brake booster line.

Once you disengage the brake booster hose. is off, you're going to want to find a small funnel that will fit into the brake booster hose. I do not recommend simply jamming the hose into the seafoam and letting the engine suck it up. This makes it very hard to control the amount being sucked up and could flood the engine far too fast cause it to prematurely stall out.

Now that you have a funnel jammed into the brake booster hose, start the Jeep. You’ll notice your rpm's are very high, likely around 2000-3000rpms. This is because your brake booster hose being disconnected is causing a massive vacuum leak. You’ll be able to feel the engine sucking air down the funnel.

I usually only use a half a can of seafoam left (8 ounces). You should, in your head, divide that into three equal parts. You’re going to want to SLOWLY pour the first two thirds of the seafoam left in the can into the engine via the funnel. The engine will start to sputter and choke as you pour in the seafoam. You DO NOT want your engine to stall out. Go as slowly as possible pouring the seafoam into the engine as necessary so the engine does not die. Do this for the first two thirds of the mixture. With the final third of the seafoam, quickly dump it down into the funnel. The idea here is to stall out the motor, suspending the remaining gulp of seafoam in the cylinder banks (don't be alarmed if your engine bay is smoking the entire time this is happening). If your car does not stall, quickly run and turn off the key.

Do not start the Jeep for at least 15-20 minutes. We want the seafoam to soak in the motor good and hard to get all that nasty carbon out of the engine.

While the engine is sitting and soaking, with the key out of the ignition of course, get that bottle of seafoam deep creep.

Part 3 - Deep Creep - Throttle body

Seafoam deep creep is to be sprayed inside your throttle body. Disconnect your hose running to the throttle body so your throttle body blade is showing. Get a friend to push down on your gas pedal so the throttle blade opens. If you don't have a friend at your disposal, a brick or something will do just fine to hold the gas pedal down, anything to keep the throttle blade open. Again, your engine is to be OFF during all this. Or you can take the entire Thottle body off and clean it that way as well.

once you can see inside your throttle body opening, spray seafoam deep creep into throttle body, fully soaking the blades, the bottom, top, and up and down into the intake manifold behind the throttle body. Use a good amount of seafoam. Don’t be too conservative, but the whole can is far from necessary. Use your judgment. Get it in there nice and deep but there's no need to flood anything!

Reconnect the throttle body hose, the brake booster hose, the clip back on the brake booster line and anything else you may have disturbed during the sea foaming of your Jeep.

Okay, now that 15-20 minutes have passed, it's time to start your baby back up. This may be a challenge. The engine is flooded with liquid so it may be a lot harder to start that usual. This is completely normal. Once your jeep is started, let it idle for a good 10-15 minutes. Your car is likely to smoke profusely. If it does not, lightly tap your gas pedal. Do NOT rev the engine like a madman. When I say lightly tap, I mean gently tap the rpm's up to no more than 1500. A blip is all that is necessary. If it doesn't smoke too badly, it's because your engine just wasn't that dirty.

After the jeep has been sitting idling for 10-15 minutes, take the Jeep out for a spirited drive. The key word here is spirited. You want to rev your Jeep nice and high and get all that seafoam into all the valleys of the engine. This is the perfect excuse to completely run the balls off your Jeep. If you look behind you, you will likely see a long trail of blue smoke dusting out the entire highway. Say good-bye to the culprit carbon buildup killing your power, gas mileage and causing your engine to ping. It’s Mother Nature’s problem now

congratulations! You have successfully sea foamed your jeep.

 

I used to run atf fluid through my engine via an iv bag and control clip. Afterwards it was a MUST to change out the plugs.

Would running seafoam through warant changing the plugs as well?

 

I have tried all of that. I can't even run the 87 at all. I have been using the mid grade for the better part of a year.