Rattling noise from engine after oil chane???? - Page 2 - Ranger-Forums - The Ultimate Ford Ranger Resource


4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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  #26  
Old 10-06-2010
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Has anyone ever found a fix for this. mine dose the same but it also does it after the truck sits for a few hours.
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  #27  
Old 10-06-2010
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By consensus of the other posts, it seems that alot of the 4.0L SOHC do this. It's not going to damage your engine in anyway. Your engine has little to no oil in it after an oil change. Thus without lubrication there is going to be some top end noise from not having any oil until the engine is able to obtain correct oil pressure. You could try filling the oil filter up 3/4 full then cranking over the engine. Just make sure that you only put in 5qts. Don't put all 5qts on top of the engine then add oil to the filter from another quart of oil. This will cause a fouled plug or busted head gasket b/c of too much oil.

However about the noise coming from the engine after letting it sit is kind of the same scenario. Depending on how long you let it sit, such as parking the truck at 8am and starting it back up at 5pm to go home. After the engine cools the oil will drop out of the heads b/c of no oil pressure b/c the engine is not on. Thus again it may take the engine a few seconds to regain proper oil pressure and lubrication so there might be some "knocking" sound. My truck always does this after sitting at home when on vacation for a week and then starting it back up on the day of return to go somewhere and a dry knocking sound will occur, but it goes away in less than 10 seconds.

I have changed my oil (every 4,000 miles) from 30,000 to 100,000 miles and have never filled the new oil filter up before installing it; I have had zero problems with that and prob never will.

Hope this may answer or at least comfort some questions you have.
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  #28  
Old 10-07-2010
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Quote:
Originally Posted by whippersnapper02 View Post
Who changes their own oil? Raise your hand. Well I have noticed that after I change my oil and I start the engine I get a rattling noise from the engine for the second it has no oil pressure. As soon as it gets pressure in the system the rattling goes away. I do nothing special when I change my oil other than letting the oil drip for a good 10 minutes and I fill the filter with oil before it goes on. WTF?? Oil pump on its way out or something or am I just hearing another normal Ford noise.
What weight oil do you use… Ford calls for 5-20, anything heavier can cause lifter noises.
Check your book...

Quote:
Originally Posted by Jimmeh View Post
I have NEVER filled my oil filter with oil before an oil change. Never even HEARD of doing that. I just dab some oil on the rubber gasket near the threaded hole, and screw it on.
Standard practice, not all the way but add some...

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Originally Posted by rangerboy101 View Post
I change my own oil and ive never heard this noise before.
Only time I got lifter noises is when I used 10-30 oil, oh ya also when I used some of that silicone additive $hit, never do that again !
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  #29  
Old 10-08-2010
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Most engines do this. When I change oil on my 4.6 it does this almost as loud as my 4.0. ALL the OHC engines I have had to this, not quite so much with the pushrod motors. Although this noise is more pronounced in my 4.0 than anything else I've ever owned. Just my .02
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  #30  
Old 10-09-2010
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well i did as ford told me and put a heavyer oil in it and it still did it he also said it could take a few days or a couple hundred miles to take effect. this is what u get when you put that crappy quaker water in there, stupid owners before me.
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