strange lower rad hose problem
strange lower rad hose problem
I have a strange problem. I have owned my car for 6 months. It is a weekend car ... 300 miles since I bought it. weekend before last I drove around some and when i stopped for gas the lady at the pump beside me said "sir your car is leaking something. I popped the hood and saw that the green slime was coming from the lower radiator hose. it was shooting straight out in a VERY straight stream. Hmmmm "pinhole leak" I mumbled to myself. I drove the five miles home in 30 degree weather cause I still had plenty of rad fluid in there. All was fine.
i went to NAPA and got a nice new lower radiator hose. I went home, and replaced the lower rad hose. NAPA part was much beefier hose, very nice. I flushed the whole system out for a while until the water came out clean. I tightened it all down and all seemed fine for a short 30 minute ride to get the AF and watr mixed well (it was 24 degrees that night).
This saturday I got in the car and drove to a friends house about 20 miles away. We replaced his fuel pump and used my car for a couple of auto parts store runs. We then went for 1 30 mile run in my car. He asked if i was sure I had tightened the hose down good cause he could smell AF so we stopped for lunch and looked ... no leaks. he ruled it a good job by me (he is a better mechanic by far). We drove about another 50 miles round trip and when we stopped at his house, went in, and come back out ... there was a green tributary starting under my car.
He looked at it all and determined that there was a pinhole leak because sliding from the water pump donw the hose his hand was dry and there was no leak. But about 8" down he declared "ouch it is a pinhole leak right here.
Is it really that common that a new hose have a pinhole leak or should i suspect more sinister forces at work here??
the original hose was much thinner and old. the top hose had been replaced by a NAPA part before I got the car. It works fine. It is just spooky how the old hose and a new hose get a pinhole in a two weeke period.
Whaddya think?
Mike
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1988 Camaro Sport Coupe305TBI-4spdAOD-2.73open in "bought stock" condition. That'll change if it stays around here much longer
i went to NAPA and got a nice new lower radiator hose. I went home, and replaced the lower rad hose. NAPA part was much beefier hose, very nice. I flushed the whole system out for a while until the water came out clean. I tightened it all down and all seemed fine for a short 30 minute ride to get the AF and watr mixed well (it was 24 degrees that night).
This saturday I got in the car and drove to a friends house about 20 miles away. We replaced his fuel pump and used my car for a couple of auto parts store runs. We then went for 1 30 mile run in my car. He asked if i was sure I had tightened the hose down good cause he could smell AF so we stopped for lunch and looked ... no leaks. he ruled it a good job by me (he is a better mechanic by far). We drove about another 50 miles round trip and when we stopped at his house, went in, and come back out ... there was a green tributary starting under my car.
He looked at it all and determined that there was a pinhole leak because sliding from the water pump donw the hose his hand was dry and there was no leak. But about 8" down he declared "ouch it is a pinhole leak right here.
Is it really that common that a new hose have a pinhole leak or should i suspect more sinister forces at work here??
the original hose was much thinner and old. the top hose had been replaced by a NAPA part before I got the car. It works fine. It is just spooky how the old hose and a new hose get a pinhole in a two weeke period.
Whaddya think?
Mike
------------------
1988 Camaro Sport Coupe305TBI-4spdAOD-2.73open in "bought stock" condition. That'll change if it stays around here much longer
Member

Joined: Jul 1999
Posts: 268
Likes: 0
From: Indianapolis, IN
Car: 89 Formula T-Top
Engine: 388 MiniramII
Transmission: T-56
Axle/Gears: 3.27
My guess would be to make sure the steering leakage is not hitting it. Maybe a cotter pin is poking a hole in it.
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'89 Formula 383 TPI
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'89 Formula 383 TPI
Supreme Member
Joined: Dec 1999
Posts: 1,237
Likes: 1
From: Reno, NV
Car: yep
Engine: uhuh
Transmission: sure does
I like this idea...^^^^^^ 
Never thought of that..
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ASE Mechanic/Machinist/Smog Tech
1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
GO #3

Never thought of that..
------------------
ASE Mechanic/Machinist/Smog Tech
1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
GO #3
i'd guess you have a leak at the water pump weep hole and it just looks like the hose is bad.
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ICON Motorsports
1st & 3rd
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ICON Motorsports
1st & 3rd
Supreme Member
Joined: Dec 1999
Posts: 1,237
Likes: 1
From: Reno, NV
Car: yep
Engine: uhuh
Transmission: sure does
WTF is this?? ^^^
I give a complement on an observation that I've never seen happen before (Oh, I'm sorry ...do you know everything??) and I get cut up about it......
I've been doing this for 15 years and I learn something new everyday....and I don't have a problem with that.
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ASE Mechanic/Machinist/Smog Tech
1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
GO #3
I give a complement on an observation that I've never seen happen before (Oh, I'm sorry ...do you know everything??) and I get cut up about it......
I've been doing this for 15 years and I learn something new everyday....and I don't have a problem with that.
------------------
ASE Mechanic/Machinist/Smog Tech
1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
GO #3
Trending Topics
Supreme Member
Joined: Dec 1999
Posts: 1,237
Likes: 1
From: Reno, NV
Car: yep
Engine: uhuh
Transmission: sure does
Oh........ 
No problem, its tough to hear sarcasm over the internet.
Sorry I bit your head off.
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ASE Mechanic/Machinist/Smog Tech
1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
GO #3

No problem, its tough to hear sarcasm over the internet.
Sorry I bit your head off.
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ASE Mechanic/Machinist/Smog Tech
1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
GO #3
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