It's the air pocket! Burp it!
Bill Gullatt
Dave Binkley wrote:
>
> I've had my Tiger for 6 months and 700 miles so far and have watched the
> list talk about Tiger's puking coolant. Have felt real secure in the
> observation that so far I haven't seen the temp gauge go north of 180 so
> far through a wide range of driving conditions. Last Monday morning the
> guage hit 205 after a 20 minute freeway run at 70 mph (outside air temp
> was a cool 50 degrees - fog in the bay area), but cooled down to 170
> after getting off of the freeway and driving through town. Tuesday
> night it did the same thing when I brought the car home. Odd.
>
> This afternoon I checked the coolant tank and it was low so I added
> water to the half way mark. Even checked it with a popcicle stick.
> Took the car up the freeway 10 miles and back at 70 mph, took it awhile
> but it did go up to 200 on the gauge. As I was pulling into the garage
> at home, the car let out a howl and dumped most of the coolant within
> about a minute. It was hard to determine exactly where it was coming
> from, the garage was dark, and I wasn't real thrilled about sticking my
> head down in all that steam and hissing. It was definitely coming from
> somewhere below or near the water pump and stopped once the level got
> down to wherever it was leaking from. I was late and had to run to
> dinner with my wife so left the car to cool down.
>
> Just got home, checked things over with the flashlight and couldn't see
> anything obvious. Added some water, took about 3/4 gallon. Fired it up
> and went back up the freeway. Got it back to the house and shut down
> before it hit 200, but it was headed there. Everything was nice and dry
> - no obvious leaks.
>
> So, what's going on. 13 lb radiator cap on the coolant tank. Stock
> 260. I figure either the thermostat is not opening or the water pump is
> shot. I can easily check the thermostat tomorrow morning. Is there an
> easy way to check out the water pump short of pulling it?
>
> Any other suggestions? Have not yet calibrated the gauge so not sure
> how accurate it is. But, if it is reasonably accurate, this shouldn't
> happen at 205 - 210 should it.
>
> Thanks for the help.
>
> Dave
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