Blown Headgasket?

[Woldy1]

Do you get white smoke on start up? Does your exhaust smell sweet? That would tell you if you're getting coolant into the cylinders. It could still be a head gasket, or even the head, depending on where the head cracked. What casting number do you have, 706?

Yea I’m pretty sure I have the 706, exhaust smells normal I think it’s just time to replace the coolant lines and radiator

 

[Woldy1]

What is the amount your are losing over what time period?

I was loosing a pint an every few weeks. No leaks on the ground or hoses. Eventually I saw the radiator support was wet under the left radiator tank. It was weeping, but not enough to puddle on the ground. I replaced it and it's been holding rock solid level.

About a pint every 1-2 weeks

 

[cjmcglaughlin]

Yea I’m pretty sure I have the 706, exhaust smells normal I think it’s just time to replace the coolant lines and radiator

Have you looked all around the lines/rad for any weeping? Also if you haven’t changed the oil since this started I’d recommend it, just to look for sure if there’s any coolant in it. Sometimes it can’t be seen on the dipstick.

 

[Mudsport96]

Check the weep holes on the water pump too. If you get a radiator, make sure it has the proper orifice in the tank return tube. Otherwise, the truck will never properly get to temp.

 

[iamdub]

About a pint every 1-2 weeks

That's too slow of a loss to visibly show in your oil. I wouldn't rule out a cracked head or failed head gasket. These types of leaks tend to only happen when it's warmed up and when driving, so they often pass the pressure check. It only takes about an hour to pop off the valve covers to inspect for the common Castech failure.

 

[Woldy1]

Oil

Have you looked all around the lines/rad for any weeping? Also if you haven’t changed the oil since this started I’d recommend it, just to look for sure if there’s any coolant in it. Sometimes it can’t be seen on the dipstick.

was changed not too long ago, Didn’t see anything abnormal. I don’t see any leaks on the ground

 

[Woldy1]

Check the weep holes on the water pump too. If you get a radiator, make sure it has the proper orifice in the tank return tube. Otherwise, the truck will never properly get to temp.

Will do

 

[Woldy1]

That's too slow of a loss to visibly show in your oil. I wouldn't rule out a cracked head or failed head gasket. These types of leaks tend to only happen when it's warmed up and when driving, so they often pass the pressure check. It only takes about an hour to pop off the valve covers to inspect for the common Castech failure.

I will check that, Thank you

 

[Woldy1]

Thanks for all the help y’all, I’m pretty sure I found the issue, I testing everything and it’s not a blown head gasket, I found a nice wet spot under the heater core lines and plastic fittings on the firewall, so I’ll get that replaced and let you guys know how it goes.