Engine overheat help

Good luck with this Brian! Couldn’t happen when when it’s warm outside

 

Should be a available at any parts store.

 

Bear in mind that those leak detectors are not always accurate, should be, but sometimes false negatives happen
I've had mixed results with them

 

That’s it. Just got back from town. Make sure you don’t suck up any anti freeze or that batch needs to be dumped and refilled with new.

 

Try running engine with the pressure gauge on without any pressure, watch the gauge needle closely and see if it twitches, may not, but see if it builds pressure quickly
Also, must be done on cool engine with all air purged to give accurate info

 

Does the cap test good?
Generally the heat in the cab goes away from an air lock in the heater core,

 

You bet! Keep us posted!

 

For the guys with experience with it, I see that have several...one better than the next?
K&W - BRANDS
Copper Block Weld™ Permanent Block & Radiator Sealer, 16 Fl Oz ?

 

Yes you can flush the core. I doubt it would cause an overheat but I literllay have 0 experience “feeling the love”

 

I should try some of it on my buddies duramax, he's not really wanting to do the head gaskets on it

 

You can try it, hets messy though

 

I'll give it a shot next week, i think book time on the dmax is something around 30 hours

 

That’s the stuff right there. Just time consuming, mostly in the house drinking beer and waiting for it to set. Drain, remove t-stat, flush fill with h20 and sealer run to temp and let sit 24 hours or something. Drain, fill, install t-stat, and run to temp. Should be good to go. Possibly need a second dose but rarely.