Motor noisy at strat up. - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 6 (permalink) Old 04-24-2012, 07:27 PM Thread Starter
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Motor noisy at strat up.

Motor started to ping at start up. It has made a little noise for some time. Changed the oil this past week. Mobil one 5w20. It almost sounds like a bag of marbles now. Oil level is correct. No low oil pressure light ( wish it had a gauge). Performance is normal. What gives. Should I flush it. Try some lucas.??????? Don't know where to go. I hate putting stuff other than oil in the motor. Anybody come across this. And any suggestions on what to do would be appreciated. Getting ready to do my superlift in a few weeks. And this is bumming me out.

2006 COMMANDER 4.7, BLACK, MEDIUM GREY INTERIOR. RC 2" LIFT WITH RR 3/8 FRONT SHIMS. FRONT HOOKS, REAR HITCH. KELLY SAFARI TSR'S 265/75/17, AIRFLOW SNORKEL, SUPERCHIPS FLASHPAQ 3875. DYNOMAX VT MUFFLER. Still waiting on my superlift...
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post #2 of 6 (permalink) Old 04-24-2012, 07:58 PM
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The oil your using isn't what is specified for that year. You should be using 5w-30, to start. I would first try to detemine where the noise is coming from. Your right, an oil additive is probably not going to fix what you have going on. Do you nean pinging, as in spark knock?

Last edited by Motorcity; 04-24-2012 at 08:01 PM.
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post #3 of 6 (permalink) Old 04-24-2012, 08:32 PM
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Have someone start it while you investigate and try to narrow it down some. Who knows might be something simple hopefully.


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post #4 of 6 (permalink) Old 04-25-2012, 07:57 AM
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probably a lifter. Had exactly the same symptoms in my 4.7 Durango, lifter noise is very common on these motors.

And yeah, definitely change to the weight the motor is spec'd for - 5w-30.

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post #5 of 6 (permalink) Old 05-01-2012, 02:12 PM Thread Starter
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Sorry I ve been tardy. It seems my lifters are the culprit. I havent checked out the exhaust, But i do suspect my drivers side probably has a broken bolt. The noise is definitely coming from under the valve covers. It is real common on the 3.7 and the 4.7 which is mine. I must have a little build up not allowing the Lash adjusters to fill. I see I can get a set for under $100. After the lift I'll look into it. Just waiting on the lift still. Superlift had to have some parts made thay didnt have it all in stock. At least thats what 4wd.com is saying. I hope that they get it here before The 14th of May, I took a vacation week so i could do install it. That way i'm not under the gun to get it done in a day or two.

2006 COMMANDER 4.7, BLACK, MEDIUM GREY INTERIOR. RC 2" LIFT WITH RR 3/8 FRONT SHIMS. FRONT HOOKS, REAR HITCH. KELLY SAFARI TSR'S 265/75/17, AIRFLOW SNORKEL, SUPERCHIPS FLASHPAQ 3875. DYNOMAX VT MUFFLER. Still waiting on my superlift...
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post #6 of 6 (permalink) Old 08-29-2012, 07:28 AM
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Did you ever get this fixed??? My XK makes the same noise...




2007 4.7 Liter XK | Front OME MD Springs w/Superlift Preload Spacer | Rear 4" Superlift Springs | Bilstein 5125 Rear Shocks | JBA UCA's | Rusty's Rear Adjustable Track Bar | Black Rock 997 Wheels | Fred Goeske 1/4 Inch Wheel Spacers | 305/70R17 Goodyear Wrangler MT/R w/Kevlar | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front E-Locker | Rear Heat/AC Delete
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