[Dman98]

I replaced mine, it wasn't leaking that bad though. When I replaced mine I put the hughes engine heavy duty replacement belly pan and gasket. They claim you'll never have any leak problems again, its been 3yrs and no problems. If your contemplating installing an M1 or other type of intake, now's the time to do it. I wish I had done that, because now I'll have to do the job again. I intend on replacing the intake with a hughes engine stage I, if I was going to do the cam and put in roller rockers I'd get an M1.

 

[butch1581]

are the 3923's a good plug for the older 318 5.2l also?? I have Bosch platinum 2's in now and it runs pretty smooth, but its getting to be that time to change again!! How exactly can you tell if you engine "pings"??

 

[Silver Ghost]

are the 3923's a good plug for the older 318 5.2l also?? I have Bosch platinum 2's in now and it runs pretty smooth, but its getting to be that time to change again!! How exactly can you tell if you engine "pings"??

Yes, the Autolite 3923's are fine for your engine (My son had them in his '99 Dak 5.2L and they were great.)

Pinging sounds like you have marbles banging around your engine. It's probably most noticable under load or while accelerating.

Joe

 

[Dman98]

Replacing those bosch +2 is a must, I just replaced mine with the autolite AP2923's(platinum.) I have bosch +4 in my ford, 7 years and the plugs still look new. I only changed the cap, rotor and wires during that time. When I bought my +2's over a year ago they were great, truck ran flawless. Over the last three months I developed a cold start problem, pulled the plugs and they looked decent. After doing research I found these things could cause a cold start problem. Crank sensor(changed 2 yrs ago), Fuel pump(changed 1 year a ago), coolant temp sensor(had corrosion around the threads changed 7 days ago), pickup coil(camshaft sensor changed 7 days ago), I even changed the cap & rotor. It ended up being the plugs, I had so much success with bosch plugs they were the first thing I purchased for the "D". I had them in 3 months, before I joined any forum. I refused to replace them after only 3 month's wheneveryone said bosch were no good for magmun engines. A year ago, a couple hundred dollars in unnecessary parts and frustration on cold days I wished I'd've listened. I learned from experience, stay away from bosch. The "D" now starts like it's new, if you live in a warm climate you probably won't experience what I did.

 

[butch1581]

I live in wisconsin and just had a cold winter, but no problems, but I'm going to try the autolites, just to see if there's a dif.

 

[Dman98]

How long have you had the bosch in your "D"? I also have the Msd6A, Msd 8.5 superconducter wires, accel coil, maybe this plus the way I drive was to much for the bosch plugs. The bosch tip is surrounded by ceramic, so once the top of the tip get carbon on it you have a problem. Other plugs the spark can come from the tip, or the sides to the electrodes.

 

[butch1581]

OK I think My engine actually does ping, I just never knew that's what it was, I always assumed that it was a ratle or something. I'm going to get rid of the bosch plugs and go with the autolites?Now here's where I'm confused?Four different plugs were mentioned in this thread?the AP2923, the 2923, the 3923, the 4923 and when you go to autolites website, it says that the 5224 is for my truck?Which are the best for the 318?? Any help would be great. I want to have the right plugs in there! thanks again

 

[Silver Ghost]

Autolite 3923 is what you want (I made a typo when I said 4923 - now corrected.)

Joe

 

[butch1581]

sounds good, how come when I look up at walmart or on the autolite website it says I need the 5224"s just curious? thanks

 

[Silver Ghost]

The 5224's are the equivalent of the stock Champion plugs.
The 3923's are a cooler heat range and a shorter tip and will help with the pinging issue.
Generally stores won't recommend anything other than a direct offset for the stock plug -so the 5224's are what you'd get if you went into Wal-Mart, NAPA, AutoZone, etc. and said "I want to replace the plugs in my 1999 Durango 5.2L V-8"
Hope that helps.

Joe

 

[butch1581]

That answers my question?Thanks a lot I'm going to pick up the 3923's after work?

 

[Dman98]

Mine was a typo also, it's ap3923 and ap means it's platinum. Sorry for the mixup.

 

[butch1581]

Thanks for the clear up. Are the platinum any better or are the copper core good enough?? The platinum look a little nicer, how do you like those??

 

[D Tyrone's Ride]

Currently, I have Bosch Platinum2s in my D 5.2L for around 44K+ miles, two winters without any issues. Later after spring arrives, plan on swappin' out with another set of Platinum2s. After the swap, I'll post photos of how they look for a motor that has 178K miles.

:mrgreen:
-Steve