95 D1, 5 speed.
This cooling profile is a new one for me. In the past, I've experienced air in the system and had to "burp" her. And I don't think that's my problem as there's no "waterfall" sounding in the dash at the heater core. As long as she's moving down the road, there's no sign of overheating. Never a temp gauge climb or water overflow, nothing to indicate a cooling problem, but waiting in line at a gas station or stop light she'll blow lots of water out her expansion tank. Her radiator is new and her thermostat is new and tested to be working as she'll open in a hot pot on the stove. I've recently rebuilt the engine and she runs nicely which had her pass her California smog test with a new engine profile. I decided to rebuild her because I wanted to pull the block and renew all its freeze plugs. They had aged and were leaking allowing air into the system which caused the "waterfall" sound.
When refilling the water back, I:
1. Lift the front up 2 feet high making the radiator the highest point.
2. Fill the radiator slowly.
2. Fill the expansion tank slowly.
3. Start engine, turn heat to HOT both sides.
4. Let engine idle until thermostat is open and have heat coming out of the heater.
5. Once air stops coming out of the radiator fill plug plug it.
6. Once the coolant level in the coolant tank stays constant replace cap.
7. Shut off engine.
8. Drive it for a day, let cool overnight, recheck coolant level, add if needed.
As I slowly fill the radiator I can see the plenum return line clearly shoot water back to the radiator thru the fill plug hole. This indicates no blockage in the system and so my opinion is that the system is free flowing. I've no idea what the problem might be and appreciate suggestions. Lastly her tachometer now reads zero and I assume the cable took a dump. Anyone know how easy/hard it is to fix? Thanks.
This cooling profile is a new one for me. In the past, I've experienced air in the system and had to "burp" her. And I don't think that's my problem as there's no "waterfall" sounding in the dash at the heater core. As long as she's moving down the road, there's no sign of overheating. Never a temp gauge climb or water overflow, nothing to indicate a cooling problem, but waiting in line at a gas station or stop light she'll blow lots of water out her expansion tank. Her radiator is new and her thermostat is new and tested to be working as she'll open in a hot pot on the stove. I've recently rebuilt the engine and she runs nicely which had her pass her California smog test with a new engine profile. I decided to rebuild her because I wanted to pull the block and renew all its freeze plugs. They had aged and were leaking allowing air into the system which caused the "waterfall" sound.
When refilling the water back, I:
1. Lift the front up 2 feet high making the radiator the highest point.
2. Fill the radiator slowly.
2. Fill the expansion tank slowly.
3. Start engine, turn heat to HOT both sides.
4. Let engine idle until thermostat is open and have heat coming out of the heater.
5. Once air stops coming out of the radiator fill plug plug it.
6. Once the coolant level in the coolant tank stays constant replace cap.
7. Shut off engine.
8. Drive it for a day, let cool overnight, recheck coolant level, add if needed.
As I slowly fill the radiator I can see the plenum return line clearly shoot water back to the radiator thru the fill plug hole. This indicates no blockage in the system and so my opinion is that the system is free flowing. I've no idea what the problem might be and appreciate suggestions. Lastly her tachometer now reads zero and I assume the cable took a dump. Anyone know how easy/hard it is to fix? Thanks.