Mac8 Posted November 3, 2016 Share Posted November 3, 2016 Started a new project, got a 1990 MJ with the inline 6 and 4x4. I installed a rough country 4.5 inch lift, and 31's. while I was in there I replaced the front brake lines, calipers, and pads. Problem is I'm not able to bleed them or get fluid to the calipers. Thinking I got a master cylinder problem. Any help is much appreciated. Link to comment Share on other sites More sharing options...
gogmorgo Posted November 3, 2016 Share Posted November 3, 2016 Did you let the master cylinder run dry? You'll need to bleed it first. Also make sure the bleed nipples are pointed up on the callipers. The casting is the same for both sides, only difference is where it's drilled for the nipple. Link to comment Share on other sites More sharing options...
DirtyComanche Posted November 3, 2016 Share Posted November 3, 2016 Sometimes the shuttle valve in the distribution block will shuttle one way or another and then fail to reset when you go to bleed it. Smack it with a screwdriver handle and see if it helps. Link to comment Share on other sites More sharing options...
Mac8 Posted November 3, 2016 Author Share Posted November 3, 2016 Will do. Thanks for the info. Link to comment Share on other sites More sharing options...
Mac8 Posted November 3, 2016 Author Share Posted November 3, 2016 Well, I got the fronts to bleed but not the backs. Got other issues, stuck in 4 wheel drive, and smoke coming from the exhaust and dip stick! Link to comment Share on other sites More sharing options...
Mac8 Posted November 6, 2016 Author Share Posted November 6, 2016 Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
DirtyComanche Posted November 6, 2016 Share Posted November 6, 2016 Is it actually stuck in 4wd, or is the indicator light just on because the vacuum switch is screwed or the CAD won't disengage? Smoke from the dip stick ain't good. Make sure it's not overfilled with oil, then compression check and go from there... The engine is probably less than healthy. Link to comment Share on other sites More sharing options...
Mac8 Posted November 7, 2016 Author Share Posted November 7, 2016 Nope, it's stuck It'll get a make over after hunting season Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Mac8 Posted November 25, 2016 Author Share Posted November 25, 2016 Also, where is the full cap for the radiator? Just through the overflow tank? Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
DirtyComanche Posted November 26, 2016 Share Posted November 26, 2016 Just the pressure bottle cap (it's not actually an overflow tank). If the system is drained you often need to bleed it. A steep hill may help with this. Link to comment Share on other sites More sharing options...
Mac8 Posted November 27, 2016 Author Share Posted November 27, 2016 Man I wish I understood. The only place that I can fill or even check the fluid level is on the over flow tank. I'm not liking it. Not sure why it's set up this way and not sure that it's factory. I'll try to post a pic tomorrow. Also I'll post a pic of the flatbed I'm going to try and build. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Mac8 Posted November 27, 2016 Author Share Posted November 27, 2016 But without the tire mounted in the middle.... Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Mac8 Posted December 26, 2016 Author Share Posted December 26, 2016 Any vendors y'all would recommend for a wiring harness? Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
MeanLemons Posted December 27, 2016 Share Posted December 27, 2016 What kind of wiring harness Link to comment Share on other sites More sharing options...
Mac8 Posted December 27, 2016 Author Share Posted December 27, 2016 For the inline 6. Motor harness for now. I'm going to get a new motor and was figuring I'd replace it while I'm there if it's a 100 or so. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Mac8 Posted December 27, 2016 Author Share Posted December 27, 2016 Will a 4.0 out of a wrangler (2000 model) work? Someone told me something about crank sensor? Link to comment Share on other sites More sharing options...
Mac8 Posted February 13, 2017 Author Share Posted February 13, 2017 Finally got around to doing a few things Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Mac8 Posted February 13, 2017 Author Share Posted February 13, 2017 And fought this..... So I'm not sure if I need to rebuild, replace, or go a different route? Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
DirtyComanche Posted February 13, 2017 Share Posted February 13, 2017 That looks bad. I'd guess there is more to the story though. I'd suggest doing a leakdown test to confirm that there is definitely dead cylinders. Or take the head off and just visual things. If it is dead, find another 4L. The 87-90 Renix version would be the most direct swap, but you can use a HO from an XJ Cherokee or ZJ Grand up until they stopped building them, but be careful with TJ/WJ engines as the later ones have different mount bosses on the block. To make the CPS work if you're using a HO engine you have to retain the flywheel or flexplate you have. Link to comment Share on other sites More sharing options...
Mac8 Posted February 13, 2017 Author Share Posted February 13, 2017 Thank you sir, it'll be making progress over the next few days. My plan is to pull the head and see what's going on before I start making big decisions. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Mac8 Posted March 8, 2017 Author Share Posted March 8, 2017 Decided to stick with a 4.0. Is here anywhere in particular that you guys like to get your motors from? Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
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