odonekanobe

My friend has an '88 4runner with the 22RE. Kind of a weird problem that I thought I would bounce off you guys. At one time, think it was towards the beginning of this issue it puked out some coolant into the cab on the passenger side. Hasn't done that again. Now it is leaking somewhere under the intake manifold on the passenger side, up high.It is also leaking at the upper radiator hose.

Anyone have any ideas? It runs good otherwise, burns a little oil but it's done that. Oil is clean, no milky-ness.

millball

There are multiple places that coolant might leak from the intake manifold side of the engine.

Its' your eyes that can find the leak, and your hands that might repair it.

odonekanobe

I posted hoping someone had the same symptoms in the past. I think it's odd that coolant leaked into the cabin, stopped on it's own and is now leaking in the motor and radiator hose. All without touching anything.

millball

It may well be that one leak does'nt have anything to do with the other.

Coolant inside the cab will likely have something to do with a leak in the heater core.

Co_94_PU

iTrader: (-1)

If the valve wasnt moved there is debris slowly clogging up the lines, progressing backwards to the block and pump, reverse flush the heater system, drain it via the hard line to prevent it from reaching the block.

google will turn up a flow diagram of the coolant system

odonekanobe

That's an interesting thought. Definitely worth exploring. When you say drain it via the hard line are you talking about the outlets to the radiator? Thank you.

Co_94_PU

iTrader: (-1)

No the hardline. So it doesn't pump it back into the block.

Locate the valve on the firewall, and trace the hoses it should be apparent, to your left there is a Hardline that wraps around the engine and enters the block via the lower intake.

Could just be a plugged heater core, whatever you find the only solution is to dig into the system and verify flow, flush and or retighten clamps

odonekanobe

Ok thanks.