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Recently I have found that the coolant level in my 3.6L Pentastar is always about 1/2"-3/4" low near the bottom of the radiator neck if I check it when the engine cools down after driving the vehicle. If I fill it back up until it touches the bottom of the radiator cap, the level goes back down...

The FSM procedure for installing the cam caps states "4. Install the camshaft bearing caps and tighten the bolts finger tight 5. Using the tightening sequence shown, tighten the bearing cap bolts to 10N·m (89 in. lbs.)". There is no mention of whether this torque value should be applied when the...

One of the new cams I purchased had a couple spots of flash rust on the heel of one lobe, so I soaked it in PB blaster penetrating oil and tried to rub it off with a towel. This was not aggressive enough to remove the rust spot, so I used the least aggressive white scotch brite pad #7445...

I noticed a very minor nick and scratch on one of my cam caps that I can just feel with my fingernail. I removed the cap and immediately placed it in a marked plastic bag with the loose bolts, but was very careful when setting them down so I would be surprised if one of the bolts scratched it. I...

Hello All, I was working on replacing cam followers and lash adjusters on the driver side bank exhaust cam, and the timing chain guide wedge tool popped out when I accidentally bumped it. The chain guide released suddenly while I had the exhaust phaser removed from the vehicle, and the chain...

I purchased a new set of Mopar lash adjusters for a 2015 Pentastar 3.6L, and notice that out of the package the plunger is rock hard, and they seem like they are fully extended. Is it necessary to release the oil pressure from these lash adjusters and partially depress the plungers so they are...

Can any of the resident engine builders recommend an assembly lube for doing a top end refresh (cams, cam followers, lash adjusters) on a 3.6L Pentastar?

I have a new set of roller cam followers, lash adjusters, and cams that I will be installing in a 3.6L Pentastar engine, and am wondering what would be the best method to clean and prep these for installation. Should I soak the cam followers and lash adjusters in a solvent like mineral spirits...

I was wondering if anyone has used this product, and can comment on its effectiveness for reducing carbon buildup from piston crowns.

Hello all, I have a 2015 Jeep Wrangler 3.6L with 128,000 miles that shows wear/discoloration spots on the tip of each cam lobe on the passenger side intake cam only. Should I replace this cam?

Is it normal for the AC system to start blowing "cool" air out of the vents pretty much immediately, but take about 5-10 more minutes before it is "ice cold"? I hooked up manifold gauges to it before, and found that the high and low side pressures were within specification.

Was wondering if anyone knows where I might source one of these batteries in Wa state Puget Sound area?

The vehicle has the manual HVAC system, and I recently noticed it will cycle the AC compressor and run the engine fan on low only when it's raining outside even if the blower is in normal vent mode with defrost off and AC off. It operates as expected when it is dry outside where it will only...

I was wondering if the resident experts could weigh in on the results of borescoping the cylinders on my 2015 Jeep Wrangler with 122,000 miles. All of the piston crowns have a fair amount of carbon buildup, but also have these yellow and white specs that I can't identify. Cylinder No. 1 appears...

Hello All, I have been looking for an effective chemical gasket remover for an upcoming rear main seal job on a Chrysler 3.6L Pentastar, so I can get away with only using plastic gasket scrapers that pose no risk to the aluminum sealing surfaces. The upper and lower oil pans are sealed with...

Hello All, I am looking at purchasing a charger for a Costco Interstate 730 CCA H6 (48) size flooded lead acid battery with a 70AH capacity, although I am having a hard time determining the correct maximum charging rate and charger size (Interstate doesn't appear to publish data sheets with...

Hello all, I recently flushed the coolant in my 2015 Jeep Wrangler at the same time as a thermostat replacement using the Mopar OAT 10 year/150K mile concentrate coolant. I ended up short on the quantity of new coolant I purchased for the flush, so I had to additionally use 1 gallon of coolant...