The last 4 or 5 days i had been getting some lifter noise when truck had sat overnight. I found this weird because I have parked it up to 2 weeks with no noise on start-up. So of course I start to worry..do I have some lifters packing it in?...Is the oil pump going? etc.
I changed the oil and filter and noticed the oil filter was only half full. Problem solved..the anti-drainback valve was blown. Started the truck this morning it was back to it's normal no noise start. Just thought I would pass this along in case some of you are also getting some lifter noise at start which might be the same problem.

 

I have a exhaust leak , have you checked for a leak . Kinda sounds like a lifter

 

I have a similar thing going on. A noise that sounds like dry lifters for about 2 seconds on first startup. does it on warm starts now and then also after coming out of the store etc. I noticed I had a lifter not quite oiling right on the front most cylinder passenger side last time i opened it up to do the plenum and pump but oil was getting through, jsut looked a bit clogged.

I was thinking its just not getting oil to the top end right away [kinda like the ford motors that have a mechanical pump that lifts oil to the head that can go bad] but I do not think the dodge has something similar.

Could this just be a dry lifter/rocker not oiling right? or do i have larger problems? My valve train has been making noise on and off on that side, but this is louder than anything I have heard before. Im going to flush it with seafoam and put a run of full synthetic in it first to see if that helps

 

I'd also use a stethascope to see if I could determine exactly where the noise is coming from.

 

my 96 2500 does the same thing. my dad has a 2012 dodge ram 2500 hemi and his does the same thing i believe its a dodge thing every gasser ive heard start has always had that noise for like 1 or 2 seconds.

 

thats what lucas is for.

 

Very loud knocking noise passenger side on start up for like 30 sec. Slow to accelerate. Car was overheating so changed thermostat did spark plugs and wires a week before

 

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