The radiator cap use a thick flat piece of rubber in the recess of the
cap. When I did the job I installed a new rubber gasket, but not the
cap. The cap is very hard to get on to the radiator and too difficult
to get on to my Stant ST-255 cap tester. I have a brand new spare cap.
Perhaps I will give it a try.
Thanks,
Ken
On Aug 2, 2005, at 11:54 PM, Joseph Ashment wrote:
> Are you sure the radiator cap is good? Could be cracked or weak.
>
> Joe
>
>
>
> On 2 Aug 2005, at 12:25, kenneth parker wrote:
>
>> Several months ago my 84 505 STI (XN6) started spewing out
>> white smoke
>> from the exhaust. There were no warning signs, no overheating, no
>> loss
>> of coolant. It just started smoking and the smoke smelled like
>> antifreeze.
>>
>> Disassembly and subsequent pressure test showed a crack in the
>> head.
>> A used head was purchased, pressure tested, resurfaced (there was
>> sufficient surface to cut from), re-guided, re-ground, etc. Liners
>> were well secured during block cleaning. Rocker arms assemblies were
>> surgically disassembled, cleaned. Piston liner protrusion was
>> checked,
>> re-checked and checked again. Holes in block were chased, lacquer
>> thinner soaked, and blown out with compressed air and all head bolts
>> were cleaned and read "Madeline in London" A new Payen Curty head
>> gasket was installed. Head was torqued to 60 ft. lbs. with a Snap-on
>> torque wrench (I did not use the Marie Antoniette angle gauge that
>> Peugeot called for) and valves were adjusted to specs.
>>
>> Shortly after re-assembly I started smelling coolant burning.
>> I could
>> not find a leak. A Peugeot guy that I know suggested that the head
>> gasket might be leaking at the rear of the motor. I drained the
>> coolant, re-torqued the head to 65 ft. lbs., re-adjusted the valves
>> and
>> put a couple of liquified GM coolant system sealant tabs in the
>> system.
>> The smell remained, though it only seemed to happen occasionally.
>> Sometimes it seemed that the smell was coming from the manifold
>> and, on
>> occasion, I thought that I smelled it coming from the exhaust
>> pipe. By
>> now I think my brain has absorbed so much coolant that I am
>> smelling it
>> when I brush my teeth.
>>
>> Last week, when the smell seemed pretty prominent, I put the
>> car in
>> the air and let it idle for a long time. I could not see any leakage
>> anywhere. I decided to spray paint the rear of the block (where the
>> head meets the block) with black primer to see if I would get any sort
>> of signs of leakage. After doing that I still could not notice any
>> leak (and that includes freeze plugs). Just for laughs I pulled the
>> radiator cap, installed my Stant ST-255 and pumped up the cooking
>> system. I pumped it up to 14 ft. lbs. and looked carefully for any
>> leaks. The gauge stayed steady at 14 ft. lbs. and no oozing appeared
>> anywhere.
>>
>> At that point I pulled the pressure tester and put the car back
>> on the
>> ground. I re-installed the cap and topped off the coolant bottle.
>> Since then ( a week ago) I have not smelled any burning coolant.
>> Thought this may go against the list's grain, I haven't even opened
>> the
>> hood to check the coolant level. I have driven the car a couple of
>> afternoons in very hot weather in lots of traffic. The temp gauge,
>> during those heated afternoons, did not go any higher then it ever
>> has.
>>
>> Today I plan on opening the hood (I want to pull the oil filter
>> cap
>> and read "The Adventures of Barbar" to the rocker arm assemblies) to
>> see where the coolant stands. If the coolant leak has fixed itself I
>> have no idea how that came about. I thought that my pressurizing the
>> system with the tester may have blown particles of the GM coolant
>> sealer tabs into the nooks and crannies that may have been leaking.
>>
>> I am, essentially, confused by this latest turn of events. I was
>> getting ready to pull the head again and re-do the job, but now that I
>> don't think there is any more leakage I have reached an impasse.
>>
>> Any suggestions or theories sent my way will be gladly
>> appreciated. I
>> am starting to thin that I jut shouldn't open the hood anymore and
>> maybe all the mechanical problems will disappear.
>> Thanks,
>> Ken
>>
>>
>>
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Received on Wed Aug 3 03:27:10 2005
