- Joined
- Jun 2, 2012
- Messages
- 25,363
- Reaction score
- 8,369
- Points
- 113
- Location
- canada
- Vehicle Year
- 1994
- Make / Model
- Ford
- Transmission
- Manual
So I bought another 1994 4.0l with blown head gaskets, both sides, cylinders #2 and #4, glove test
Sent the heads out to machine shop, and much to my surprise neither was cracked
valves checked OK so they surfaced them.
Flushed the block out, had water pump off
Flushed heater core, good flow
Reinstalled the heads and all went well, just normal BS, lol
Put in new water pump and thermostat
Pull radiator and flushed it, and did flip test no blocked tubes, looks fairly new
All back together, filled with water, heater hose off to let air out
Started it up, no white smoke
no water leaks
...........but after only a minute or two temp gauge started to go up, but heater was still blowing cooler air.
Warmed up to below 1/2 like normal, heater got warm, and you could see the temp gauge drop when thermostat started to open, and upper hose started to get warm
Then it starts to go over 1/2 on temp gauge and starts to over heat, if you drive it hard it will overheat
So...............I am puzzled
I pulled back the shroud and felt radiator, nice even heat and cooler at the bottom
so new water pump seems to be working, and thermostat
If I let it get hot enough I can shut it off and I can hear bubbling in passenger side head, drivers side is quiet
The heads were not flushed, yes I should have done that, lol
Any ideas on what I am overlooking or if I can clear any blockages without head removal
I may pull thermostat and see if I can snake a smaller hose up into the passenger side head and shoot water in, that should be reverse flow
Sent the heads out to machine shop, and much to my surprise neither was cracked
valves checked OK so they surfaced them.
Flushed the block out, had water pump off
Flushed heater core, good flow
Reinstalled the heads and all went well, just normal BS, lol
Put in new water pump and thermostat
Pull radiator and flushed it, and did flip test no blocked tubes, looks fairly new
All back together, filled with water, heater hose off to let air out
Started it up, no white smoke
no water leaks
...........but after only a minute or two temp gauge started to go up, but heater was still blowing cooler air.
Warmed up to below 1/2 like normal, heater got warm, and you could see the temp gauge drop when thermostat started to open, and upper hose started to get warm
Then it starts to go over 1/2 on temp gauge and starts to over heat, if you drive it hard it will overheat
So...............I am puzzled
I pulled back the shroud and felt radiator, nice even heat and cooler at the bottom
so new water pump seems to be working, and thermostat
If I let it get hot enough I can shut it off and I can hear bubbling in passenger side head, drivers side is quiet
The heads were not flushed, yes I should have done that, lol
Any ideas on what I am overlooking or if I can clear any blockages without head removal
I may pull thermostat and see if I can snake a smaller hose up into the passenger side head and shoot water in, that should be reverse flow