Had a coolant leak. Replaced lower hose.
Water pump starts to leak. Replaced water pump/ gasket. New thermostat and gasket.
Changed oil and filter. Thought all was good to go. Fire it up and coolant is now leaking and running down drivers side of motor. Could it be the head gasket????
Sounds like you didn't get the thermostat seated in the grove when you put the water outlet back on. Easiest way to make sure thermostat stays in place is to put about 3 small dabs of rtv on thermostat and put it in block, wait about 10 mins so rtv will have a chance to set then carefully put wateroutlet on and tighten the bolts. I usually use a gasket that has a sticky adhesive on it so it will stick to the wateroutlet.
Could be head gasket but if you're leaking enough to see it in that spot you'd have other problems. You sure it's not coming from the over flow tank or a hose in that area? Either that or check that thermostat in place and water pump gasket. Don't forget to put anti seize on those bolts either.
Well went out this morning and got early start on pulling it apart. It is the exhaust/ manifold gasket that was leaking. Figured I've gone this far gonna go ahead and put new head gasket in too. Lucky me o'rileys has both in stock!!
The ole saying is true!!!!
Jeep isn't getting older, but newer one part at a time........
Got it all back together put water in and the D$&@ thing is still leaking in same place, I guess the only thing left on that side is the freeze plugs! They looked fine so I didn't replace them. Lesson learned when it is all apart, replace all that you can.
Looks like next weekend I'll pull it back apart one more time..... (
While it was still leaking coolant a little bit, I topped off the water and fired it up. Surprisingly the leak stopped, I let it idle for a while and come up to temp. No more leaks anywhere.
Took it for a test drive for about 20 minutes and still no leaks. Check radiator when it cooled for a a little bit still full and no signs of oil or contaminates in it.
Don't know if it will start leaking again once it cools down but sure hoping not!!
This is my first time changing a head gasket and manifold gasket. It was a bit intimidating to look at all that has to be taken off but once I dove into it it really wasn't that bad.
Sure have learned lots from reading the forum again coodoos to all the members.
Just a thought...
Why don't you run a section of heater hose directly from the water pump to the heater core connection on the fire wall, thus eliminating the water jacket in the intake manifold as your leak and confirming the engine is the source of your coolant leak. I have seen the aluminum in the manifolds get hairline cracks and they can be really difficult to see. The water jacket in the intake manifold is to warm the base of the carburetor to prevent "icing", I ran my YJ for several months with the intake manifold un-heated after some work was done, it didn't seem to suffer the diversion of coolant at all. Hope it works out for you.
I am assuming you have a 4.2 carburated, and not some wild upgrade in the vehicle.
1989 Sahara, 4.2L Jasper engine, nuttered, Weber 38/38 DGAS, Borla stainless exhaust header, automatic transmission, Zone 1 1/4" body lift, Home made shackle 2" lift, BFG 33" KM2s, Leather seats (heated), Alpine stereo, VDP sound bar
I was thinking it was the intake manifold that was cracked too. So I bypassed it and it still leaked. I checked that before I changed out the manifold and head gasket. Only thing left is the freeze plugs. If it still leaks after that, looks like I'll be getting a new motor.