how the f do i get engine know after an oil change?
Thread Starter
CF Veteran
Joined: Dec 2011
Posts: 3,237
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From: albany, new york
Year: 1988
Model: Cherokee
Engine: i6
Originally Posted by mtnance
On another forum for another type vehicle, it is suggested to "annually" use a bottle of seafoam in the tank, and also 1/2 bottle for an intake ingestion and the other 1/2 in the crankcase,...after 500-1000 miles, change the oil using all oil. I've heard of good/bad depending on mileage (or well kept engine). I've heard of low mileage/well kept engines benefiting from this but on the flip side,...a high mileage/poor maintained engine,...getting worse because it loosened up everything. Seafoam does help get rid of moisture quite well as opposed to those "on sale" products. It isn't thick either.
Thread Starter
CF Veteran
Joined: Dec 2011
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From: albany, new york
Year: 1988
Model: Cherokee
Engine: i6
Originally Posted by 89Laredo
Id say lazy lifters... Mine does it on really cold mornings. Little tap of the throttle after a minute usually stops it, or going 1/4mi down the road.
Seasoned Member
Joined: Nov 2011
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From: pa!
Model: Cherokee
Please for the love of baby jeezus don't use Lucas oil stabilizer ! Have you seen what it does on the inside of an engine? They made a video and a short and simple is that it foams your oil up and stays foamed for hours after u let it sit, your normal anti foaming agents in your oil can't keep up, or ifnot you like foamy oil go for it lol
Senior Member
Joined: Jun 2010
Posts: 703
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Year: 1993
Model: Cherokee
Engine: 4.0
Please for the love of baby jeezus don't use Lucas oil stabilizer ! Have you seen what it does on the inside of an engine? They made a video and a short and simple is that it foams your oil up and stays foamed for hours after u let it sit, your normal anti foaming agents in your oil can't keep up, or ifnot you like foamy oil go for it lol
Member
Joined: Jan 2012
Posts: 124
Likes: 1
From: Texas
Year: 1995
Model: Cherokee
Engine: 4.0
The cold Lucas (38 degrees) could be clogging up your hydraulic valve lifters and whatnot. Let it warm up good, see if the knocking goes away. If not, put a piece of cardboard in front of the radiator and take her for a spin, warm her up hot, then drop the oil again, replace it with 10W-40, replace the filter and ix-nay on the Lucas. That's my advice.
Banned
Joined: Jan 2012
Posts: 143
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Model: Cherokee
Umm ok maybe its just me. But doesn't the 4.0 take 6qrts? I've always ran 6qrts from the start..I now run 6.5qrts after the big oil filter upgrade mod thing. I run 5W40 Rotella. I run the extra .5qrt because I have a huge oil filter. Doesn't burn a drop either.
My guess is that sound in the video is probably the mech. fan. Mine sounded very similar, turned out 1 blade was bent ever so slightly. And yes it also sounds like its missing on 1 cyl. When you drive it does it have a very slight sputter?
I left my 5cyl spark plug off after a tune up one time. Drove for 2 or 3 days before I figured out what was wrong, sounded exactly like that.
My guess is that sound in the video is probably the mech. fan. Mine sounded very similar, turned out 1 blade was bent ever so slightly. And yes it also sounds like its missing on 1 cyl. When you drive it does it have a very slight sputter?
I left my 5cyl spark plug off after a tune up one time. Drove for 2 or 3 days before I figured out what was wrong, sounded exactly like that.
Thread Starter
CF Veteran
Joined: Dec 2011
Posts: 3,237
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From: albany, new york
Year: 1988
Model: Cherokee
Engine: i6
Umm ok maybe its just me. But doesn't the 4.0 take 6qrts? I've always ran 6qrts from the start..I now run 6.5qrts after the big oil filter upgrade mod thing. I run 5W40 Rotella. I run the extra .5qrt because I have a huge oil filter. Doesn't burn a drop either.
My guess is that sound in the video is probably the mech. fan. Mine sounded very similar, turned out 1 blade was bent ever so slightly. And yes it also sounds like its missing on 1 cyl. When you drive it does it have a very slight sputter?
I left my 5cyl spark plug off after a tune up one time. Drove for 2 or 3 days before I figured out what was wrong, sounded exactly like that.
My guess is that sound in the video is probably the mech. fan. Mine sounded very similar, turned out 1 blade was bent ever so slightly. And yes it also sounds like its missing on 1 cyl. When you drive it does it have a very slight sputter?
I left my 5cyl spark plug off after a tune up one time. Drove for 2 or 3 days before I figured out what was wrong, sounded exactly like that.
oh and the knock from the original post is gone, i think it was just to cold for the thick oil mix, or it didnt get to fully cycle after my change...
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Joined: Aug 2011
Posts: 43,971
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From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
yes it takes 6qts, i used 5 oil, 1 lucas, it does sputter a tad, i'll be doing plugs, wires cap and rotor this weekend, so i'll be checking plugs then, im not using it as a dd yet so its not a huge deal, it dark by the time i get home from work, so i only work on it over the weekends, i wanna get rid of the mech fan anyway... i'll update sat or sunday
oh and the knock from the original post is gone, i think it was just to cold for the thick oil mix, or it didnt get to fully cycle after my change...
oh and the knock from the original post is gone, i think it was just to cold for the thick oil mix, or it didnt get to fully cycle after my change...
Thread Starter
CF Veteran
Joined: Dec 2011
Posts: 3,237
Likes: 1
From: albany, new york
Year: 1988
Model: Cherokee
Engine: i6
i need to get to some junk yards stat... like i said its not a dd yet, theres no snow or reason to rush it, id rather work on it now and get everything situated before i dd it.