View Full Version : diesel problems

jesse Raymond
11-03-2009, 06:16 AM
ok guys,my 1980 terra and i were coming home on friday and the old girl decided to what i can determine is wipe a set of rings. The truck fell on it face and statred to smoke heavily when i got pulled over to check it out the vent for the block along with the dipstick tube had oil spuing out of them. With out pulling the motor this is the best guess i have.
Please let me know if any of you have had this problem.


11-03-2009, 08:10 AM
Sounds like a cracked head. Bad rings wouldn't make it start throwing oil out of the breather and dipstick tube. Was the smoke white or black? Where did it seem to be coming from?

jesse Raymond
11-05-2009, 07:24 AM
it was most defently oil smoke. it was being blown from the breather tube (down by the oil pan) and the dip stick tube.

11-05-2009, 09:31 AM
From the sounds of this and the message you sent earlier, I'd lean more towards the engine eating a valve. Your oil pan is getting pressure from somewhere that it obviously shouldn't be, and that means something in the head. Tear the head down and see what you find, or if you have a borescope you might be able to inspect it without taking the head off. Take out the injectors and it'll give you a good view of what's inside the chambers.

Also, no oil pressure could be a factor with it all, too, and a pretty serious one. The oil pumps on these engines don't have any pressure on the system if there's no oil to pump. You can either pull your oil pan and check out your pump, or you can re-tap the hole for the sending unit and hook up an after-market oil gauge (the non-electric style). Either way, I'd say check to make sure you're still going to get oil through the system when you fix the top end problems.

jesse Raymond
11-06-2009, 12:13 AM
sounds like a plan to start in the top end. i am dreding it cause winter is setting in and its old school gravel drive way wrecning for me.(no garage) when i swaped the good motor for the bad this spring i changed the oil. I used a 15w 40 diesel oil, ever since then the oil pressure gauge would ride on the high mark. I read the owners manuel and it suggested regular oil so i figured the thicker oil was just making the gauge register higher pressure.

11-06-2009, 08:57 AM
I've always used Rotella 15w-40 in mine; figure I've got enough money wrapped up in rebuilding it that I ought to spend the money for good oil. But go ahead and tear into the head and see what's wrong with your engine. I don't know of any better way to diagnose it from here.

jesse Raymond
11-09-2009, 12:39 AM
tearing in today, ill let you know.

jesse Raymond
11-11-2009, 12:15 AM
yeah. so i melted holes thru two pistons....

11-21-2009, 11:59 AM
Nice. At least it wasn't the head though. Pistons are a "slightly" easier problem to deal with. And a lot less expensive. Have you thought of where you're going to look for parts?

jesse Raymond
11-22-2009, 11:31 PM
i was thinking of using super scout specialist they can break it down to individual peices and not just sell me a kit full of stuff i dont need.I had to torch off one head bolt, i hope it wont be hard to find.....

11-25-2009, 08:04 PM
Super Scouts are a great place to look for parts. I've never been steered wrong by any of them. The other place to look is JESCO, but they're increasingly more and more expensive because they actually hold a lot of oringial parts and full engines for the SD-33 diesel series.

12-02-2009, 04:08 PM
Mine was running fine but when I pulled the head, I had 3 cracked pistons. These things are so underpowered that you wind up getting the pistons hot. My engine rebuild probably cost $5000 with parts from Jessco. I did the turbo and the whole thing with liners, pistons, all bearings, injectors & pump etc... Get a exhaust temp gague and a 3" straight exahust. Better yet, save some money and put a small block Chevy in it. If you need economy and you plan to keep it forever, the diesel might be right for you. I put 60K miles on my rebuild but it's been real slow and gutless the whole time. Good luck with your project. Don't give up, you'll get going again....

12-02-2009, 11:49 PM
The whole point behind having a diesel Scout isn't for the power or the money... it's the nostalgia and pride of knowing you own a piece of history. Not saying that you can't upgrade the SD-33 with a better turbo, injectors, and fuel delivery system to get a little more power from it, but I'd never in my wildest dreams think of replacing my diesel (or any of my Scout engines really) with a SBC. I'm a little old-school that way I guess.

jesse Raymond
12-03-2009, 01:49 AM
my uncle has a sbc multiport engine that he is foaming at bit to help me put in. I've already ordered my parts and have the diesel hanging in the shed to teardown. It will live again!!! and its pulse shall be rattle,rattle clack,clack....haha. Ijust feel its going to be easier to put what belongs back in and not tranplant some sbc in. If i did anything else it would be the international big block i think its a 392 or somewhere around there.

12-03-2009, 09:58 AM
Haha.... ah, the sound of those diesels is probably the most easily recognized sound I know. I've poured way more money into my Scout than it's worth on the market easily, but it's worth it to me. I rescued it because I wanted to, so I'll bear the brunt of the costs and have fun with it!!

12-03-2009, 10:02 AM
I feel the same way... half the fun is seeing ur project take shape. And knowing EXACTLY what you put in it.

Im way over my price on vehicle on cost :P not to mention the hundreds of man hours haha

You must love working on vehicles, to own an IH , its a rule :P