Hate this truck.... low coolant = lift noise?

[Lifted2wd]

I had lifter tick really bad in my 5.7l hemi to the point shops told me it needed to be repaired. I noticed a radiator leak which turned out to be a cracked radiator in the truck. Once I put a new radiator in the noise went away.

Is there anyway the two would have any correlation?


Also my MPG went from 10.2 back up to 16.2 hwy/15.8 city

 

[TheEnder]

I had lifter tick really bad in my 5.7l hemi to the point shops told me it needed to be repaired. I noticed a radiator leak which turned out to be a cracked radiator in the truck. Once I put a new radiator in the noise went away.

Is there anyway the two would have any correlation?


Also my MPG went from 10.2 back up to 16.2 hwy/15.8 city

If it overheated there you go. Hemis don’t (usually) have enough oil pressure going to the head because at idle they don’t have enough oil pressure, and if you don’t do your oil changes every 3K or 5K (at the maximum) with full synthetic oil you’ll clog up the passages in the lifters and cause them to wear.


Sent from my iPhone XS Max in my 2013 Magnum 4.7L V8

 

[Lifted2wd]

If it overheated there you go. Hemis don’t (usually) have enough oil pressure going to the head because at idle they don’t have enough oil pressure, and if you don’t do your oil changes every 3K or 5K (at the maximum) with full synthetic oil you’ll clog up the passages in the lifters and cause them to wear.


Sent from my iPhone XS Max in my 2013 Magnum 4.7L V8

All oil changes are done w synthetic no later than 5k. Truck never over heated. I'm realizing that the oil pick up is bad in these

 

[TheEnder]

All oil changes are done w synthetic no later than 5k. Truck never over heated. I'm realizing that the oil pick up is bad in these

What oil is used? I recommend redline or if you’re really going for good oil Amsoil. Pennzoil Ultra Platinum is good too. I think that high volume oil pumps are available for the 5.7 Hemi, but i’m not sure.


Sent from my iPhone XS Max in my 2013 Magnum 4.7L V8

 

[Lifted2wd]

What oil is used? I recommend redline or if you’re really going for good oil Amsoil. Pennzoil Ultra Platinum is good too. I think that high volume oil pumps are available for the 5.7 Hemi, but i’m not sure.


Sent from my iPhone XS Max in my 2013 Magnum 4.7L V8

I'll look into an oil pump. I run mobil 1

 

[kurek]

I had lifter tick really bad in my 5.7l hemi to the point shops told me it needed to be repaired. I noticed a radiator leak which turned out to be a cracked radiator in the truck. Once I put a new radiator in the noise went away.

Is there anyway the two would have any correlation?


Also my MPG went from 10.2 back up to 16.2 hwy/15.8 city

That's pretty strange!! Even if you had an overheat condition those aren't exactly known to heal themselves just from restoring coolant..

Might be worth doing a compression check to make sure all 8 cylinders really are closed up.

 

[crackerjack1957]

All oil changes are done w synthetic no later than 5k. Truck never over heated. I'm realizing that the oil pick up is bad in these

Who said oil pickup is bad.......only way they could be bad is from neglected OCI that would make them clog.

 

[Wild one]

I had lifter tick really bad in my 5.7l hemi to the point shops told me it needed to be repaired. I noticed a radiator leak which turned out to be a cracked radiator in the truck. Once I put a new radiator in the noise went away.

Is there anyway the two would have any correlation?


Also my MPG went from 10.2 back up to 16.2 hwy/15.8 city

6mpg increase from a rad replacement ??? Seems a little bit fishy,what else did you change. If you gained 6mpg from just doing the rad we all better swap rads then,lol.

 

[Octane]

Must have been replaced with one of those hi performance aluminum radiators to get a mpg increase. Lol

 

[Lifted2wd]

6mpg increase from a rad replacement ??? Seems a little bit fishy,what else did you change. If you gained 6mpg from just doing the rad we all better swap rads then,lol.

The mpg went down when the noise started. I'm not saying any of this is correlated but I'm trying to figure it out

 

[kurek]

Just spitballing since none of us knows what's really going on here... but if the coolant was low and the coolant temperature sensor was just hanging out in ****** air it might have been reading lower temp than normal, causing the engine to stay in cold start enrichment for a lot longer and resulting in worse mpg.

None of that explains the noise, or why the noise went away.

 

[RedSRT4Me]

If it overheated there you go. Hemis don’t (usually) have enough oil pressure going to the head because at idle they don’t have enough oil pressure, and if you don’t do your oil changes every 3K or 5K (at the maximum) with full synthetic oil you’ll clog up the passages in the lifters and cause them to wear.


Sent from my iPhone XS Max in my 2013 Magnum 4.7L V8

Curiosity has me wondering if you could be a little more specific to which hemi's you've experienced with low oil pressure? How low is low?

I've never seen nor heard of them running low pressure or that oil pressure itself was ever a problem.

 

[TheEnder]

Curiosity has me wondering if you could be a little more specific to which hemi's you've experienced with low oil pressure? How low is low?

I've never seen nor heard of them running low pressure or that oil pressure itself was ever a problem.

I’ve never experienced a Hemi with low oil pressure, but there are many reports of people with the 5.7 that have low oil pressure at idle, and it’s somewhat of a known issue with the 5.7. I’m not exactly an expert in this, and you should go to the Synthetic Oil thread and ask Burla for more information.


Sent from my iPhone XS Max in my 2013 Magnum 4.7L V8

 

[RedSRT4Me]

I’ve never experienced a Hemi with low oil pressure, but there are many reports of people with the 5.7 that have low oil pressure at idle, and it’s somewhat of a known issue with the 5.7. I’m not exactly an expert in this, and you should go to the Synthetic Oil thread and ask Burla for more information.


Sent from my iPhone XS Max in my 2013 Magnum 4.7L V8

I'll pass on that thread. I can't read through 2200 of posts. My A.D.D kicks in and I'll forget what I'm even doing.

My rig always idles with 39psi of pressure at idle which isn't a problem. If guys are getting down into the teens for pressure I can see how a 5.7 oil pump which is crank driven to begin with should be replaced.

 

[TheEnder]

I'll pass on that thread. I can't read through 2200 of posts. My A.D.D kicks in and I'll forget what I'm even doing.

My rig always idles with 39psi of pressure at idle which isn't a problem. If guys are getting down into the teens for pressure I can see how a 5.7 oil pump which is crank driven to begin with should be replaced.

Thats pretty high for a Hemi, how many miles?


Sent from my iPhone XS Max in my 2013 Magnum 4.7L V8

 

[Wild one]

Thats pretty high for a Hemi, how many miles?


Sent from my iPhone XS Max in my 2013 Magnum 4.7L V8

Actually that's not high at all.My truck idles right around 50 psi hot,with a relocated filter set-up,both my wifes Challengers idle in the 51 psi range hot,one was her old 2016 5.7 and her new one is a 2019 6.4. All 3 idle in that 50 psi range,and the truck has 500 nitrous drag strip passes on it and 44,000 miles of somewhat spirited driving,lol. Truck also shifts at 6600 rpm.

 

[James OBrien]

Just spitballing since none of us knows what's really going on here... but if the coolant was low and the coolant temperature sensor was just hanging out in ****** air it might have been reading lower temp than normal, causing the engine to stay in cold start enrichment for a lot longer and resulting in worse mpg.

None of that explains the noise, or why the noise went away.

I was thinking the same thing. Also, if you don't have proper coolant flowing through the engine I think you could make a case for a tolerance going out of whack due to something being too hot, and expansion where it shouldn't be... I could almost make a case for this happening.

 

[TheEnder]

I'll pass on that thread. I can't read through 2200 of posts. My A.D.D kicks in and I'll forget what I'm even doing.

My rig always idles with 39psi of pressure at idle which isn't a problem. If guys are getting down into the teens for pressure I can see how a 5.7 oil pump which is crank driven to begin with should be replaced.

Thats pretty high for a Hemi, how many miles?


Sent from my iPhone XS Max in my 2013 Magnum 4.7L V8

 

[TheEnder]

Actually that's not high at all.My truck idles right around 50 psi hot,with a relocated filter set-up,both my wifes Challengers idle in the 51 psi range hot,one was her old 2016 5.7 and her new one is a 2019 6.4. All 3 idle in that 50 psi range,and the truck has 500 nitrous drag strip passes on it and 44,000 miles of somewhat spirited driving,lol. Truck also shifts at 6600 rpm.

Nice!


Sent from my iPhone XS Max in my 2013 Magnum 4.7L V8

 

[Octane]

I had oil pressure so high on a small block chevy once,80 to 90 psi cold that I was concerned the seals were gonna pop out!