2000 Blazer with low oil pressure.
#11
![Default](https://blazerforum.com/forum/images/icons/icon1.gif)
Nice, so the rod bearings would make that knocking noise I am hearing? Around how much would it be to get the rod bearings done if I needed to get em replaced?
#12
![Default](https://blazerforum.com/forum/images/icons/icon1.gif)
Rough Idle as in, sittin at 20 PSI rough, i think my bearings might be going bad inside the crankcase (i believe that is what its called) I might have to send them to a machine shop. Im still on the case of low oil pressure. i think the ticking might be a small "knocking" noise instead of "ticking" due to my inexperienced ears. I might have to end up getting a 3yr/100k mile motor in a box which would be awesome ![Big Grin](https://blazerforum.com/forum/images/smilies/biggrin.gif)
If I end up having to get a new motor you guys know what to put on it before I throw it in to get a natural increase in HP?
Edit: No codes at the moment, also noted when the motor is drivin about 15+ miles the oil pressure doesn't even go above 40 PSI anymore, so its steadily declining as the motor gets hotter. As you said before hot temps kill the pressure cause it makes the oil so lubed up (rofl). Which makes me refer to the bearings inside the case.
![Big Grin](https://blazerforum.com/forum/images/smilies/biggrin.gif)
If I end up having to get a new motor you guys know what to put on it before I throw it in to get a natural increase in HP?
Edit: No codes at the moment, also noted when the motor is drivin about 15+ miles the oil pressure doesn't even go above 40 PSI anymore, so its steadily declining as the motor gets hotter. As you said before hot temps kill the pressure cause it makes the oil so lubed up (rofl). Which makes me refer to the bearings inside the case.
When you say knocking, can you feel the knock. Does it sound somewhat "deep" as in the frequency of the noise, if you can tell what I'm saying?
#13
![Default](https://blazerforum.com/forum/images/icons/icon1.gif)
When I got my truck the rod bearings were completely shot, took it for a ride and the oil pressure would drop to nothing after it warmed up, anytime I stopped the pressure would bottom out and you could hear the knock knock knock of the crank at idle... picked up a used motor with 49k on it, cheapest way, only cost me $1100 all together with gaskets, hoses, new radiator, mounts, trans lines, motor was $525... everything is peachy now... was a bitch to put in tho...
#14
![Default](https://blazerforum.com/forum/images/icons/icon1.gif)
When I got my truck the rod bearings were completely shot, took it for a ride and the oil pressure would drop to nothing after it warmed up, anytime I stopped the pressure would bottom out and you could hear the knock knock knock of the crank at idle... picked up a used motor with 49k on it, cheapest way, only cost me $1100 all together with gaskets, hoses, new radiator, mounts, trans lines, motor was $525... everything is peachy now... was a bitch to put in tho...
![Icon Dance Twist](https://blazerforum.com/forum/images/smilies/icon_dance-twist.gif)
Either route is gonna be expensive.
Does it sound somewhat "deep" as in the frequency of the noise, if you can tell what I'm saying?
Thread
Thread Starter
Forum
Replies
Last Post
encryptedzion
Full Size K5 (1969-1991) GMT415 (1992-1994) Tech
1
05-17-2009 07:19 AM