cat 3126 overheat & excessive blowby

[cat 3126 overheat & excessive blowby]

22 hours ago, sstgermain said:

That is exactly what my son said. He is a mechanic at Cat for 25 years. He said even though it is rare it does happen.

hay all you guys  thanks for the info. i guess my next move is take it to a cat dealer. if you can find one. i have learned from past experience even a heavy equipment dealer will service that engine. 

[cat 3126 overheat & excessive blowby]

14 hours ago, wildebill308 said:

If it was low on coolant it may still be purging air from the system. I agree with Carl. New thermostat and cap would be good.

Bill

thenks for the info. Bill & Carl. i will try the simple things first.

[cat 3126 overheat & excessive blowby]

On 8/6/2021 at 11:29 AM, jleamont said:

Hydronic Heating system in lieu of a propane furnace? 

I would cap off the heater hoses up to the front (back at the engine), see if it still leaks down. There is a lot of places where that coolant could go while running down the highway with little to know trace between the engine and the dash on a pusher. 

got propane furnace. checked heater hoses to dash. found 1 leak repaired it. ran yesterday for at least an hour @idletime with no overheat. saw coolant gush back into overflow tank and popped the cap open. may have leak between cylinder and coolant channel pressureizing coolant system.

[cat 3126 overheat & excessive blowby]

On 7/31/2021 at 6:17 AM, sstgermain said:

Sounds like a bad head or head gasket causing blow by and water getting into cylinder.

would't a bad head or head gasket with water getting into cylinder show up in exhaust as vapor. no smoke or vapor in exhaust. also would't the engine have a misfire?

[cat 3126 overheat & excessive blowby]

On 8/1/2021 at 11:53 AM, jleamont said:

Do you have Aquahot? 

don't known what aquahot is. please explain.

[cat 3126 overheat & excessive blowby]

didn't use coach last year but now looking to get back on road. now have problem with coolant system. low water light comes on & overheats after driving for approx. 1hr.  check coolant in radiator now low. also now have excessive blowby from crankcase breather. smoke is whitesh in color. checked oil no signs of water in oil[at least on dip stick]. no smoke in exhaust. because of motorhome age don't want to spend alot of money to repair.