13BT Diesel puzzle

[Brewsterfire]

Had some leakage on the drivers side of the engine, seemed liked fuel/oil mix. Increased with highway use, many hours of brain scratching. Thought it might be the rear intake port gaskets failing or IP, but found this yesterday.... need to know if it can be capped off or where it would connect to?

The fsm

for the engine doesn't speak of it.

The return line is run to the tank. Help please!

 

[Brewsterfire]

It is the smaller one on the right of the return feed metal line.

 

[roma042987]

Looks like an alignment dowl

 

[lostmarbles]

Looks like an alignment dowl

Yep. Pretty sure there's been threads before from people who expect these to go somewhere or be capped. But in fact they're meant to be left just like that.

It can't be the source of your leak in my opinion...

 

[Brewsterfire]

Dang!!

 

[Brewsterfire]

Seems like the oil/fuel leak was in the injection pump, dried out gaskets and seals. Thanks to Jon at Okanagan Diesel Injection.

 

[Brewsterfire]

Well here's an update. had the IP repealed, put it back in and the 40 runs great, good idle but still is blowing blue smoke and getting crankcase pressure. I figured it was a stuck ring that might loosen off as it got driven. Put about 400 miles on around town driving and blue smoke is getting more evident.
Looks like the James Bond smoke screen.

 

[Brewsterfire]

Guess going to do a compression test and check on a ring job. The engine reportedly had 110k km when pulled. The mechanic/technician that did the pump said it was like new.

What's the opinion on just doing rings and rod bearings? Or full rebuild?
It's going to be expensive as the rebuild kit is $2000 alone.

Has any one done a 13BT rebuild?

 

[gerg]

If it is a stuck ring you can try gm upper cylinder engine cleaner through the glow plug hole. It disolves carbon. Blast the stuff out through the glow hole when your done to make sure you don't hydro before you start. Stuff needs to be in for 2 hrs but no more as it will dry out and recake. Worked for 2h guys with stuck rings.

http://www.amazon.ca/Genuine-88861803-Engine-Injector-Cleaner/dp/B00BK7LR36

For rusty rings I'd use metal rescue the same way I decsribed. Can get it at canadian tire for about the same price as the gm cleaner. Sitting engines are very vulnerable to ambient humidity through the intake and exhaust valves.


You either empty your engine oil prior or change it after. Might be worth a try before you spend some serous dollars.
g

 

[Brewsterfire]

Thanks Gerg
What do you mean by hydro?

I will have to pull the injectors as I don't have glow plugs. Would that work?

 

[Dougal]

Thanks Georg
What do you mean by hydro?

I will have to pull the injectors as I don't have glow plugs. Would that work?

Hydraulically lock the engine. Liquids don't compress so having a piston bowl full of liquid on startup can cause significant problems.

 

[Brewsterfire]

If it is a stuck ring you can try gm upper cylinder engine cleaner through the glow plug hole. It disolves carbon. Blast the stuff out through the glow hole when your done to make sure you don't hydro before you start. Stuff needs to be in for 2 hrs but no more as it will dry out and recake. Worked for 2h guys with stuck rings.

http://www.amazon.ca/Genuine-88861803-Engine-Injector-Cleaner/dp/B00BK7LR36

For rusty rings I'd use metal rescue the same way I decsribed. Can get it at canadian tire for about the same price as the gm cleaner. Sitting engines are very vulnerable to ambient humidity through the intake and exhaust valves.


You either empty your engine oil prior or change it after. Might be worth a try before you spend some serous dollars.
g

Would the metal rescue work putting it in the injector holes and turning it over after the 2 hours to push liquid out?

 

[gerg]

Yes it would. Sorry I forgot you had a 13bt and not a 3b

 

[RufusTheDufus]

I used the upper cylinder cleaner to free up a stuck ring on an H. Didn't solve my problem though because the ring lands looked like this:

You can certainly do only pistons, rings and rod bearings. Just be sure to get an accurate dial bore gauge and check the cylinders to be sure they are in spec. They tend to become barrel shaped as they wear out. The cylinder that was the home to that piston was within spec and I cleaned it up with a honing stone. (The type that looks like a chimney cleaning brush.)

 

[RufusTheDufus]

Also, some people might think this is snake oil, but I've used it in a 3B and have seen very positive results. Auto RX. Compression in the 3B went from just barely firing at 290-ish PSI on a couple cylinders to a range of 340 - 350 across all cylinders. It took two full treatment cycles to see any progress due to so much sludge buildup from previous owner's neglect.

The direct injection engines are supposed to run much cleaner than the IDIs. I've read some posts here about oil looking clean 1,000 miles after an oil change. A stuck ring seems unlikely. Cracked ring, maybe.

 

[gerg]

I've read some very good things about auto Rx, but I wouod think that it might be prudent to increase oil change frequency, or at the very least the filter as you can release a lot of deposits. I honestly think it should be on the menu for all the folks here with compression issues as it could save them quite a few dollars if you don't need a rebuild and merely have frozen rings.

 

[RufusTheDufus]

Auto RX is a slow-acting product. Not a harsh engine flush. Changing the filter is a good idea but if you change the oil you also flush out the very expensive de-gunking esters.

Sorry to derail the topic.

 

[Brewsterfire]

Good discussion!

 

[Brewsterfire]

Well trying the upper cylinder cleaner as we speak. The injectors were cleaned a couple of months ago at time of swap.
Found carbon flakes on the injector tips. The ip was not working before and the added oil influx via crankcase pressure, caused the carbon build up as well.
Going to suck out the fluid/carbon, change oil and take it for a longer drive to see if it loosened the ring(s).
Fingers crossed, hoping to take it 500 miles to the Coastal Cruiser meet this weekend.

 

[Brewsterfire]

Update!

Tried upper chamber cleaner. Took truck for a run to go to Cruiser days , up the pass and the engine kept blowing blue. Engine heated on climb, cooled it off and drove straight home.

Just did a compression check and found cylinder 3 super low reading 20 psi.

Guess it's rebuild time dang it anyway, want to be driving it!

Going to have to do some fund raising!