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73-87 Chevy _ GMC Trucks => Suburbans => Topic started by: Redcell on May 19, 2010, 07:56:36 am

Title: Coolant Leak
Post by: Redcell on May 19, 2010, 07:56:36 am
I have a small coolant leak that just started. It is coming down the passenger side at the transmission bell housing. I can not find wheres its coming from. Its not much coolant and the radator is still full. I look for an hour yesterday and could not find wheres it was coming from and its driving me nuts. 87 suburban 4wd
Title: Re: Coolant Leak
Post by: Da67goatman on May 19, 2010, 10:27:07 am
does it leak all the time or just when driving?  I'd check the around intake and heads to see if gravity is playing tricks on you.
Title: Re: Coolant Leak
Post by: Redcell on May 19, 2010, 10:54:44 am
I will check it. I think its driping from somewhere else as well. it was right after I drove it.
Title: Re: Coolant Leak
Post by: jaredts on May 19, 2010, 11:18:24 am
You might use a coolant system pressure tester to find it.  I found a mysterious coolant leak that way recently.  I borrowed one from Autozone and pumped up the system with the attached bulb and voila--coolant started seeping out from my leak.  Running the engine until it gets hot enough to leak and then looking around is no where near as easy.
Title: Re: Coolant Leak
Post by: Redcell on May 19, 2010, 12:20:07 pm
Is it one you put on as the radator cap? I called auto zone and thats the only one they had.
Title: Re: Coolant Leak
Post by: jaredts on May 19, 2010, 12:41:33 pm
Yes, that's what I used.  Put it on in place of the cap and pump up the system with the attached bulb.  It has a gage for watching the pressure drop, but you already know there's a leak so a drop shouldn't be a surprise.
Title: Re: Coolant Leak
Post by: Redcell on May 19, 2010, 01:32:51 pm
thanks