SeanP Posted February 21, 2021 Share Posted February 21, 2021 This past summer I bought a 1486 that my cousins bought new in 77. Before I bought it they let a friend borrow it and he blew it up while using it. It sat for probably 5 or 6 years so I was able to buy it dirt cheap. The engine has never been touched or overhauled. The friend told me that it blew either water or oil out of the exhaust stack and he shut it down right away. So he says. I figured he blew the head gasket and possibly warped the head. I dropped the fluids and oil and water both looked clean. Next I pulled the head and sent it to a machine shop to have it worked over. They told me everything looked good, ground the intake valves a little, replaced the injector sleeves, and whatever else it needed. In the mean time I noticed that the radiator was plugged and calcified so I sent it to a shop to have it rebuilt. I ordered a new water pump and temp sending unit. I reused the old injectors and did not have them tested. I installed new copper washers and dust seals. I replaced the head gasket and set the intake valves to 0.020 and the exhaust valves to 0.025. It has the old cam shaft. The engine when running has a ticking noise and I can’t locate where it’s coming from. Rocker arms are getting oil and look to be running like they should. I notice either fuel or oil running out of the exhaust manifold. I’m thinking of replacing all of the injectors next. Also engine pours out white smoke. Any thoughts or suggestions? Thanks Quote Link to comment Share on other sites More sharing options...
Thesd5488 Posted February 22, 2021 Share Posted February 22, 2021 Injectors could be junk valves should all be at .25 Quote Link to comment Share on other sites More sharing options...
J-Mech Posted February 22, 2021 Share Posted February 22, 2021 10 minutes ago, Thesd5488 said: Injectors could be junk valves should all be at .25 I think there is a SN break on the valve settings.... but I might be remembering wrong. And I think you meant .025. .25 is a lot.... Pull the injectors and pump and take them to a shop. You have fuel issues. Quote Link to comment Share on other sites More sharing options...
TB5288 Posted February 22, 2021 Share Posted February 22, 2021 You said the injector sleeves were replaced, make sure they are fully seated. This would not cause ticking noise but it would the white smoke. Been there, done that. Quote Link to comment Share on other sites More sharing options...
dale560 Posted February 22, 2021 Share Posted February 22, 2021 You said engine was thought to be ruined or blown up and radiator plugged? I would be surprised just by your description that it didn’t get severely overheated and has a piston and sleeve that is screwed up pretty badly.take a temp gun to see which cyl isn’t firing. Common , very common thing to happen. Quote Link to comment Share on other sites More sharing options...
Jacka Posted February 22, 2021 Share Posted February 22, 2021 12 hours ago, SeanP said: This past summer I bought a 1486 that my cousins bought new in 77. Before I bought it they let a friend borrow it and he blew it up while using it. It sat for probably 5 or 6 years so I was able to buy it dirt cheap. The engine has never been touched or overhauled. The friend told me that it blew either water or oil out of the exhaust stack and he shut it down right away. So he says. I figured he blew the head gasket and possibly warped the head. I dropped the fluids and oil and water both looked clean. Next I pulled the head and sent it to a machine shop to have it worked over. They told me everything looked good, ground the intake valves a little, replaced the injector sleeves, and whatever else it needed. In the mean time I noticed that the radiator was plugged and calcified so I sent it to a shop to have it rebuilt. I ordered a new water pump and temp sending unit. I reused the old injectors and did not have them tested. I installed new copper washers and dust seals. I replaced the head gasket and set the intake valves to 0.020 and the exhaust valves to 0.025. It has the old cam shaft. The engine when running has a ticking noise and I can’t locate where it’s coming from. Rocker arms are getting oil and look to be running like they should. I notice either fuel or oil running out of the exhaust manifold. I’m thinking of replacing all of the injectors next. Also engine pours out white smoke. Any thoughts or suggestions? Thanks Well you went to a lot of effort,the injectors should be tested.I am at the point where ANY motor work gets done other then a water pump,I pull injectors, pump and usually first. It is almost a mainttance thing, kinda like a tune up on a gas engine.I am not saying what you did was not needed just it is one more step to eliminate your problems. Quote Link to comment Share on other sites More sharing options...
INTERNATIONAL 1466 Posted February 24, 2021 Share Posted February 24, 2021 Ticking sounds like a tappet gap too wide. I would readjust your tappet gap, not uncommon for one to not be correct when the head has been removed. Lot of places for a little piece of foreign matter to hide. White smoke seems like it is burning coolant to me. Most often that is an injector sleeve issue though, which you have fixed. I would check out the injectors as others said. An inexpensive tractor gets expensive quickly I know. $2000 will cover a pump and injector rebuild, but I wouldn't do that yet if it was me. Just get the injectors tested first. Let us know what you find. 1 Quote Link to comment Share on other sites More sharing options...
SeanP Posted February 24, 2021 Author Share Posted February 24, 2021 Well I just replaced all of the injectors and I still have this ticking sound. I watched all of my rocker arms and I noticed #4 exhaust push rod doesn’t have near as much lift as the other exhaust valves. Wouldn’t the cam lobe be the only thing that would effect the poor lift? The push rod doesn’t seem to be bent or broken either Quote Link to comment Share on other sites More sharing options...
mkrsmoke Posted February 24, 2021 Share Posted February 24, 2021 I had a 1466 with a DT 436 that had a couple cam lobes badly worn. Replaced the cam and it run great. It was bending push rods before I figured out what was going on. There’s nothing else that could cause it not to have enough lift. Not a small job though. Quote Link to comment Share on other sites More sharing options...
TB5288 Posted February 24, 2021 Share Posted February 24, 2021 8 minutes ago, SeanP said: Well I just replaced all of the injectors and I still have this ticking sound. I watched all of my rocker arms and I noticed #4 exhaust push rod doesn’t have near as much lift as the other exhaust valves. Wouldn’t the cam lobe be the only thing that would effect the poor lift? The push rod doesn’t seem to be bent or broken either If the valves were adjusted properly it still should not tick. Is the valve adjustment way off on the rocker? Did the adjuster get left loose? Sounds like you may need a camshaft but it shouldn't be causing ticking noise if they were adjusted. Quote Link to comment Share on other sites More sharing options...
SeanP Posted February 24, 2021 Author Share Posted February 24, 2021 Yeah the only thing I can figure is maybe the lifter causing the noise. I checked my exhaust valves again and they are all at 0.025 Quote Link to comment Share on other sites More sharing options...
TB5288 Posted February 24, 2021 Share Posted February 24, 2021 4 minutes ago, mkrsmoke said: I had a 1466 with a DT 436 that had a couple cam lobes badly worn. Replaced the cam and it run great. It was bending push rods before I figured out what was going on. There’s nothing else that could cause it not to have enough lift. Not a small job though. I don't know how a bad cam love could bend a push rod unless it was able to come out of the rocker arm adjusting ball Quote Link to comment Share on other sites More sharing options...
SeanP Posted February 24, 2021 Author Share Posted February 24, 2021 Might be time to call in a professional haha Quote Link to comment Share on other sites More sharing options...
mkrsmoke Posted February 25, 2021 Share Posted February 25, 2021 15 minutes ago, TB5288 said: I don't know how a bad cam love could bend a push rod unless it was able to come out of the rocker arm adjusting ball I’m not really sure either, it bent a couple twice. I was watching it run with the valve cover off & noticed the lift wasn’t near the same on a couple rockers, don’t think it was a coincidence that those were the ones bending pushrods... All I know is that I put a new cam in it & it hasn’t done it since & that was about 7 years ago. Quote Link to comment Share on other sites More sharing options...
dale560 Posted February 25, 2021 Share Posted February 25, 2021 30 minutes ago, SeanP said: Might be time to call in a professional haha Quote Link to comment Share on other sites More sharing options...
dale560 Posted February 25, 2021 Share Posted February 25, 2021 With the problems you list , no lift on a valve and a ticking noise. You probably are better off to just bite the bullet and spend the money on sleeves and pistons , full overhaul kit on engine with new cam. Put the cam in it might run for a bit you are just better of to go through it all. 3 Quote Link to comment Share on other sites More sharing options...
J-Mech Posted February 25, 2021 Share Posted February 25, 2021 53 minutes ago, SeanP said: I watched all of my rocker arms and I noticed #4 exhaust push rod doesn’t have near as much lift as the other exhaust valves. By eye? With it running? Is that rocker adjusted out more than the others? As long as the lash is correct, even with a bad lobe it shouldn't "tick". Is the engine missfiring? Quote Link to comment Share on other sites More sharing options...
SeanP Posted February 25, 2021 Author Share Posted February 25, 2021 I’m not hearing a misfire, it seems to run good besides the ticking. And yes I watched it while it was at idle. Do the worn cam lobes usually destroy the lifters? Quote Link to comment Share on other sites More sharing options...
SeanP Posted February 25, 2021 Author Share Posted February 25, 2021 I might just go for a lower end rebuild. I don’t really want to tear this back apart in 2 years because I cut corners. Especially after it was ran too hot Quote Link to comment Share on other sites More sharing options...
dale560 Posted February 25, 2021 Share Posted February 25, 2021 1 minute ago, SeanP said: I’m not hearing a misfire, it seems to run good besides the ticking. And yes I watched it while it was at idle. Do the worn cam lobes usually destroy the lifters? You can definitely see a valve that doesn’t open. It is very noticeable when watching height of other valves. The oblong cam wears off not pushing lifter and valve train up to open valve enough. If exhaust doesn’t open it will push air back into intake manifold. The proper way to diagnose cam lift is with dial indicator , but if you have a noticeable lift difference and more than likely adjusting screw on that rocker is in farther than others you found your problem. 1 Quote Link to comment Share on other sites More sharing options...
dale560 Posted February 25, 2021 Share Posted February 25, 2021 1 minute ago, SeanP said: I might just go for a lower end rebuild. I don’t really want to tear this back apart in 2 years because I cut corners. Especially after it was ran too hot That is usually what happens, you can change cam bearings in frame with right tools but block needs to come out for those bearings so you might as well spend the money now. Quote Link to comment Share on other sites More sharing options...
SeanP Posted February 25, 2021 Author Share Posted February 25, 2021 I could maybe try tightening the tappet screw down a tad bit on that valve and see if the tick gets any better 1 1 Quote Link to comment Share on other sites More sharing options...
mkrsmoke Posted February 25, 2021 Share Posted February 25, 2021 Do you have a stethoscope? They are great for trying to pinpoint where the noise is coming from. You could put it on the rocker stud to see if it’s that’s where it’s coming from at idle. Quote Link to comment Share on other sites More sharing options...
J-Mech Posted February 25, 2021 Share Posted February 25, 2021 55 minutes ago, dale560 said: You can definitely see a valve that doesn’t open. It is very noticeable when watching height of other valves. Listen.... that is true to a trained eye, but this guy is here asking for help, so obviously isn't trained or he wouldn't be asking. Second, you nor I have heard it. For all we know, he is just hearing the injection pump tick that all the 400 series has. He says he doesn't hear a missfire, which may be that he just isn't familiar enough to hear one, or it isn't missing. We both know it should have an odd sound if a valve isn't opening, so how about cooling down on trying to convince him to go ripping the motor apart until we can confirm that is what it really needs??? Now..... 49 minutes ago, SeanP said: I could maybe try tightening the tappet screw down a tad bit on that valve and see if the tick gets any better Is the tappet in spec? Why don't you take the valve cover off and confirm you aren't just seeing things? I'm pretty skeptical at this point. Quote Link to comment Share on other sites More sharing options...
dannyredfan Posted February 25, 2021 Share Posted February 25, 2021 56 minutes ago, SeanP said: I could maybe try tightening the tappet screw down a tad bit on that valve and see if the tick gets any better I wouldn’t have a problem doing it for diagnostic purposes brings up a good point are you familiar with 400 engines The pump has a pretty good tick. I have a video that amplifys it but can’t load it from phone Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.