First, you have to determine whether the engine was really overheating or
if its just the gauge giving a false indication of overheating. If its
really overheating, there should be symptoms like pressure buildup and
maybe some coolant release from the overflow pipe, maybe the sound of
boiling coolant.
When I had overheating in my 72B after an engine overhaul, I let the engine
cool a bit and then I removed the radiator cap. Not much steam, level was
okay. So I warmed the car up a bit with the radiator cap off and when once
again the gauge showed the car was overheating with minimal steam coming
off the coolant, I knew the problem was in the gauge/sensor. Actually it
was the voltage stabilizer - it wasn't properly grounded. You can always
stick a thermometer in the coolant to get an accurate temperature reading.
I used to be a chemist so I can get a close idea of water temperature
through observation.
If it is overheating, a number of causes are possible including timing or
poor circulation. Again, you will need to eliminate possibilities like
verifying the timing, maybe check and make sure the thermostat is opening.
Check hoses for warmth to verify circulation. I replaced a bad water pump
once (on my Landcruiser) and found out the new water pump didn't have an
impellor - it didn't take very long for it to overheat.
David Councill
67 BGT
72 B
At 05:59 PM 5/2/2004 -0400, BarrMark262@aol.com wrote:
>Hi List: Well, now that the distributor is in right and the engine starts and
>idles, I notice that within 3-4 minutes my temp gauge goes to hot.
>I have water in the radiator; the top of the radiator gets hot so I guess the
>water pump is working. radiator is recored, and water pump rebuilt. Fan is
>not loose.
>Where to look for cause?
>
>Thank you so much,
>Dennis
>
>1974B almost done
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