LIM Runner Now Leaking Coolant
#1
Senior Member
Thread Starter
LIM Runner Now Leaking Coolant
I'm on the hwy and suddenly the PK Ave is starting to overheat..eek. Pull over, shut it off & discover rad cap is cold & nothing in the the coolant reservoir.
Pop the rad cap off & luckily I had 1 gallon of coolant in trunk. Filled it up and all was good but could not find the leak, but could smell it, nothing dripping below car heater & rad hose all dry.
Next day when car cold, I got a bright inspection light and found the source,, the rubber runner from LIM, outside edge is leaking with a small crack..
The upper & lower intake gaskets were refreshed /done 4 years ago.
I have LPS cleaned and alcohol wiped compressed air the area, applied a silicone patch for now, I guess I will know more tomorrow how bad the leak still is, or not.
Mike do you know if there are any better quality runners available beside what comes with the fel pro gasket set? Kinda disappointing this one only lasted 4 years.
Pop the rad cap off & luckily I had 1 gallon of coolant in trunk. Filled it up and all was good but could not find the leak, but could smell it, nothing dripping below car heater & rad hose all dry.
Next day when car cold, I got a bright inspection light and found the source,, the rubber runner from LIM, outside edge is leaking with a small crack..
The upper & lower intake gaskets were refreshed /done 4 years ago.
I have LPS cleaned and alcohol wiped compressed air the area, applied a silicone patch for now, I guess I will know more tomorrow how bad the leak still is, or not.
Mike do you know if there are any better quality runners available beside what comes with the fel pro gasket set? Kinda disappointing this one only lasted 4 years.
__________________
1997 Buick Pk Ave (Soft Ride) Suspension!
1997 Buick Pk Ave (Soft Ride) Suspension!
#2
Retired
I don't know of any better kits.
Don't forget to check/change your oil.
Don't forget to check/change your oil.
#4
Senior Member
Thread Starter
Yes not to worry, Luckily I believe it is leaking outwards only it seems, and the oil appears to be fine,no smoke from tailpipe, but I will check oil condition daily now until proper repairs can be made.
With the 24 hour external silicone patch,almost fully cured, I am going to take the car for a drive and re-inpect for any leaks.
I think this was an un-noticed slow leak over time, that caught up to me..
With the 24 hour external silicone patch,almost fully cured, I am going to take the car for a drive and re-inpect for any leaks.
I think this was an un-noticed slow leak over time, that caught up to me..
__________________
1997 Buick Pk Ave (Soft Ride) Suspension!
1997 Buick Pk Ave (Soft Ride) Suspension!
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Soft Ride (06-08-2019)
#6
Retired
You could try a lower PSI radiator cap.
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Soft Ride (06-08-2019)
#7
Senior Member
Thread Starter
I've got a shop inspection booked for Thurs by a friend who is very familiar with these engines. I'll report back what he finds.
My silicone patch did nothing, as it is still leaking from somewhere ..but where..?? I will have to report back.
Hoping for the best/..preparing for the worst.
My silicone patch did nothing, as it is still leaking from somewhere ..but where..?? I will have to report back.
Hoping for the best/..preparing for the worst.
__________________
1997 Buick Pk Ave (Soft Ride) Suspension!
1997 Buick Pk Ave (Soft Ride) Suspension!
#8
Retired
You'll figure it out.
#9
Senior Member
True Car Nut
Looking at it again, I would check the underside of the LIM for a leak right in that area. But, that is right where the UIM and TB can all leak too.
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Soft Ride (06-09-2019)
#10
Senior Member
Thread Starter
It turned out to be the UIM gasket weaping pretty good on the drivers side.
New Prestone coolant (long life) was used as this system was flushed a long time ago of dex cool.
New gasket installed and then pressure tested, all is good again.
New Prestone coolant (long life) was used as this system was flushed a long time ago of dex cool.
New gasket installed and then pressure tested, all is good again.
__________________
1997 Buick Pk Ave (Soft Ride) Suspension!
1997 Buick Pk Ave (Soft Ride) Suspension!