[SGT JUNK]

well I fix one thing and another breaks. Got the air intrusion fixed and now this.

I look in my coolant reservoir and I see pea soup. It smells of diesel, no black oil, pull the radiator cap off and I don't smell a thing. The water pump is working.

We flushed the reservoir tank out real good, and then topped off the radiator, it was slowing filling up and it looked/smelled like diesel was getting in some how.

I check my oil dipstick and it black and thick. not watery, milky, or anything else other than oil.
No smoking out the back except on start up.
No black oil spots in radiator coolant so shouldn't be cavitation, I have been running SCAs since I got it 5yrs ago.

I just did my injector o-rings and caps, is there a way diesel gets into the coolant from there like on a power stroke? I'll do a compression test tomm otherwise I'm at a loss. Thanks for any info

 

[oldrebuiltdodge]

Do you have a heat exchanger somewhere that maybe warms your fuel up using radiator coolant?

The oil conversions use those a lot.

 

[SGT JUNK]

not that I have installed. It's bone stock.I thought I had injector caps that the 7.3 powerstroke, but as far as I can tell we don't. I'm just gonna flush it real good and see what happens.
I did add some of the Bars stop leak a week ago and then topped off the fluid. maybe it unblocked itself and churned up a bunch of sediment and rust from the radiator.
I just don't know where fuel and coolant meet.

 

[oldrebuiltdodge]

I've never heard of Bars Leaks doing that, but that doesn't mean it can't happen. Did you pour it directly into the radiator, or into the make-up bottle? Another question would be... How much did you put in?

 

[madpogue]

Are you sure it's fuel? Is it the E4OD truck in your signature? If so, check the tranny fluid.

Or, what you're seeing could be that stop leak stuff itself. My brother used to work in the cooling system service industry, and they called that stuff "Bars Heat", for its uncanny ability to clog heater cores. That, and it would just circulate around in the coolant making it look icky, and not stop any leaks. What sort of leak were you trying to stop? You might try fixing whatever that leak is the right way, changing the coolant out, and then seeing if you still get whatever foreign substance in the cooling system.

 

[SGT JUNK]

I'm pretty sure I figured it out. Its the bars stop leak.

I poured in the whole bottle that has the little nuggets in it. I have a weeping leak at the bottom of my water pump. I just needed a quick fix for a week or 2 while I finish up a few jobs.

I also put a cheapy raidiator cap on from Adv auto. I don't think its working write.

Any way, I flushed the entire system till clear water came out, then ran radiator flush and water thrrough it. I dont see any sludge or oil coming out, so I'm content to fill it back up and get back on the road.

 

[oldrebuiltdodge]

If you don't over use Bars leaks, it doesn't cause any problems, and I personally have seen it seal up the lower sleeves on some old Waukesha engines. I don't use the stuff unless it is a get by for a short time, but it does work, and unless over used, I've never seen it stop up a heater core. For that matter I've seen black pepper used, and it works too. It won't however seal up a water pump seal.