3 liter oil circulation problem to heads/cam
#1
01-16-2012, 06:55 PM
3 liter oil circulation problem to heads/cam
Hello,
I have a 1996 Plymouth Voyager with a Mitsubishi 3 liter, single-overhead cam, 12 valve engine in it. I just replaced the head gasket & had the rear head completely rebuilt by a machine shop. When I got it all back together, it started right up, no problem. But I noticed that the valve clatter was very loud, like they weren't getting any oil, even after several minutes of running.
Other than that, it seems to run fine.
So I checked the oil light, but it was off, indicating that there is sufficient pressure. Then I shut the engine off & turned the ignition switch back on, without starting the engine, to check that the light functions, & it did. So I then restarted the engine, & it went off again, indicating that there was pressure again. But the valve assembly was still pretty loud.
So then I removed the rear valve cover again to inspect the rocker arm assembly, & as I suspected, it's still completely dry & clean. Not a drop of oil on it.
This problem didn't exist before I replaced the head gasket. So is there any1 out there who is familiar with these engines that may be able to tell me what might cause the light to go off, but still not supply the heads with any oil?
Maybe there is something I forgot to do in reassembly. I can't think of what this might be. Hopefully, whatever it is, it won't require too much tear-down again to fix. I appreciate any insight or ideas that any1 may be able to offer.
Thank you.
I have a 1996 Plymouth Voyager with a Mitsubishi 3 liter, single-overhead cam, 12 valve engine in it. I just replaced the head gasket & had the rear head completely rebuilt by a machine shop. When I got it all back together, it started right up, no problem. But I noticed that the valve clatter was very loud, like they weren't getting any oil, even after several minutes of running.
Other than that, it seems to run fine.So I checked the oil light, but it was off, indicating that there is sufficient pressure. Then I shut the engine off & turned the ignition switch back on, without starting the engine, to check that the light functions, & it did. So I then restarted the engine, & it went off again, indicating that there was pressure again. But the valve assembly was still pretty loud.
So then I removed the rear valve cover again to inspect the rocker arm assembly, & as I suspected, it's still completely dry & clean. Not a drop of oil on it.
This problem didn't exist before I replaced the head gasket. So is there any1 out there who is familiar with these engines that may be able to tell me what might cause the light to go off, but still not supply the heads with any oil?
Maybe there is something I forgot to do in reassembly. I can't think of what this might be. Hopefully, whatever it is, it won't require too much tear-down again to fix. I appreciate any insight or ideas that any1 may be able to offer.Thank you.
#3
01-17-2012, 12:50 AM
Well, that's an interesting theory. But I doubt it. I was specifically pretty careful not to do that when I put it on. But thanks for your idea. Anybody have any others?
#4
01-17-2012, 01:15 AM
#5
01-17-2012, 05:51 PM
UPDATE: I pulled the rocker-arm assembly off & cranked the engine, & got plenty of oil up through the head. So it seems that I have a blockage in the rocker-arm assembly. Curious though, because there was never a problem with this before I took it apart. It just seems odd that this would occur right when I took it apart.
#6
02-10-2012, 12:22 AM
Update
Apparently, I somehow got the rocker-arm assembly assembled incorrectly. I got another 1 complete from the wrecking yard & now it works fine. Thanks for the suggestions, guys. I just wanted to let you all know.
Thread
Thread Starter
Forum
Replies
Last Post
