Hi everyone. I started my 2002 D last night at first the lifters where makinga lot noise,then when it warmed up it ran fine. has this happend too anyone else. It was cold but not that cold 35. Thanks for all and ant help.

 

First off are you sure its the lifters, or an exhaust leak?

for noisy lifters make sure you have enouh oil , or try using a different viscosity oil (osmething more suited for colder temps).

a more expensive fix is an engine pre-luber. It works the same way as a fuel pump basically. It primes the whole engine with oil when the key is in the ON position in a few seconds, preventing dry startups.

 

I noticed the same thing on my 4.7 recently. Just changed over to Mobil 1 real recent. Not sure if its related or not. I don't recall hearing it prior. Haven't seen any real hard core answers on this one.

 

IT IS THE OIL!!!!

yep when I switched to mobil 1 I had the noise on startup too, drove me nuts

switched to pennziol platinum and all is quiet again ,same weitght oil as mobil one and is dead quiet figure that!!!

and all the harping about mobil 1 and it makes the durango sound like a dieselI just dont know!!!

 

Thanks for the replies.I'm going to change the oil this morning.I'll let you know how things turn out.My wife had the oil changed at jiffy lube last time.I don't know what they put in for oil.It's almost time for a chnge anyway.I will use castro 5w30.thanks again have a good weekend.

 

I change the oil it seems to running smoother.A little tic at first start up but then goes away.

 

Guys:

I have run Mobil 1 5w 30 in my D for 4 years now. No weird noises here. Also, no offense but I would not put Pennzoil in my lawnmower let alone a 20 k vehicle.

Sounds more like the exhaust leak that several folks have experienced with the 4.7 when the manifold bolts break.

BMW, Mercedes Benz, Cadillac, and the makers of the Corvette and Viper useM1 for a reason.

Don

 

I'm gonna replace the filter see if I got a bad one, seems like the oil pressure takes a bit to get where it needs to be. Once its warmed runs like a champ with steady pressure. Am I wrong in thinking the oil pressure should be there almost immediately after start up.

 

No more engine noise.After I change the oil the noise is gone.I wont be going back to jiffy lubeever again.Thanks for all your imputs.

 

Heimer:

The 4.7 engine is weird that way. When I first bought mine, right away I noticed that the oil guage would run up to 1/4 scale, then a second or so later head on up to ~3/4 scale.I had much discussion with my dealer aout this, and we also started up a new 4.7 sitting on the lot. Same thing.

I must say this is the 1st engine I have seen in my 30 years of auto enthusiasm that operates this way by design. As long as it works and runs without problems, "that does not befront me none!"


Don