NEVER underestimate your own work!
03-31-2008, 09:25 PM
#1
NEVER underestimate your own work! As most of you know I bought me a 96 Z28 M6 recently and it had two problems...
The main problem is it is overheating. The former owner replaced the opti, plugs, wires and put on a new GM waterpump. And ever since its been overheating.
And when I got it I drove it while it was cold and gave it a good bit of throttle and it got to about 3500 rpms and it fell on its face.
I bought the car and started to fix it.
I looked at the plug wires and #3 and #7 plug wire was swapped on the optispark! "THANK GOD" I said, because it was such a simple fix!
Now for the overheating problem.
The heat climbs just like it should, not fast or slow and the fans kick on as they should. I tried to use the bleeder valves and Me and two Toyota Master Tech think the only air thats coming out is just the steem that is building up.
Also, once the car is warmed up, One side of the radiator is hot as where the other side it somewhat luke warm.
They think my radiator is clogged up!
What do you think?
Any help is appreciated, im ready to start driving my new car!
The main problem is it is overheating. The former owner replaced the opti, plugs, wires and put on a new GM waterpump. And ever since its been overheating.
And when I got it I drove it while it was cold and gave it a good bit of throttle and it got to about 3500 rpms and it fell on its face.
I bought the car and started to fix it.
I looked at the plug wires and #3 and #7 plug wire was swapped on the optispark! "THANK GOD" I said, because it was such a simple fix!
Now for the overheating problem.
The heat climbs just like it should, not fast or slow and the fans kick on as they should. I tried to use the bleeder valves and Me and two Toyota Master Tech think the only air thats coming out is just the steem that is building up.
Also, once the car is warmed up, One side of the radiator is hot as where the other side it somewhat luke warm.
They think my radiator is clogged up!
What do you think?
Any help is appreciated, im ready to start driving my new car!
03-31-2008, 09:39 PM
#3
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And you shouldn't be opening the bleeders when it's hot, either.
If you radiator is clogged (could be based on what your saying), that would explain the overheating.
If you radiator is clogged (could be based on what your saying), that would explain the overheating.
03-31-2008, 09:46 PM
#6
you probably have an air pocket in the line towards the back of the engine bay on the passenger side. the hose is above the bleeder and the radiator cap so the air builds up there. one trick is to jack up the front of the car and then while NOT HOT and engine NOT RUNNING and fill the radiator until it pee's from the bleeder then quickley close the bleeder and the cap. may take more than one round but one round did it for me.
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03-31-2008, 10:01 PM
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If you've determined that the system does *not* have air in it (which it
sounds like it does), do one other check.
On the front of the water pump, there is an inspection cover. When the engine
is cold, take this cover off - yes, water will dump out, because the water
pump's impeller is behind this cover. Attempt to turn the impeller by hand.
If it turns, I'll bet it's a bad drive coupler or stripped driven or drive gear.
I had a similar, intermittent overheating problem. It turns out that the water
pump drive coupler was stripped, which meant the pump was probably only
operating at 60-70% efficiency.
sounds like it does), do one other check.
On the front of the water pump, there is an inspection cover. When the engine
is cold, take this cover off - yes, water will dump out, because the water
pump's impeller is behind this cover. Attempt to turn the impeller by hand.
If it turns, I'll bet it's a bad drive coupler or stripped driven or drive gear.
I had a similar, intermittent overheating problem. It turns out that the water
pump drive coupler was stripped, which meant the pump was probably only
operating at 60-70% efficiency.
03-31-2008, 10:25 PM
#11
reference here for proper fill technique: http://shbox.com/1/4th_gen_tech2.html#radflush
How long can this take to bleed the system?
03-31-2008, 10:37 PM
#13
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either take your hoses off or your radiator out and put a water hose in there and spray the water in there to where its going the opposite direction of the normal flow but stick a rag in around the water hose so the water can ONLY go into the radiator and not back out the way its going in
