Home » Public Forums » GMCnet » Re: [GMCnet] Transmission vacuum modulator leaking?
Re: Question [message #327371 is a reply to message #327335] |
Wed, 20 December 2017 20:28 |
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Matt Colie
Messages: 8547 Registered: March 2007 Location: S.E. Michigan
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Senior Member |
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gibsongo wrote on Wed, 20 December 2017 10:36Hello all,
Once again, thanks for the comments and suggestions. A couple of more questions if I may. I still haven't managed to locate a garage willing to work on my "white smoke problem". Several have indicated that they would be willing to take a look in January when their bread and butter business slows down a little.
Question 1: how long I have before facing serious rust resulting from what is probably a little anti freeze leaking into one or several combustion chambers. Are we talking months here....or weeks....or days? If it's days, I may already be too late.
Question 2: Should I be starting the engine regularly to keep things oiled, or does that worsen the problem since I may be drawing more antifreeze into the combustion chamber(s)?
Question 3: bdub suggested putting in some Bars Leaks and making a run to Bluevale. I'll admit this is a tempting option, but what are the chances of a can of this stuff actually temporarily stopping/slowing the lead enough to drive 500 + miles? And don't I run the risk of permanently gumming up the radiator, heater core and coolant passages in the engine block? i.e. Would this cure possibly be worse than the illness?
Frank from Borrmann's garage has suggested getting a radiator pressure tester kit, pressurizing the system, looking for a pressure drop then pulling spark plugs to see which cylinders are affected. It's supposed to warm up to just a few degrees below freezing on the weekend, so this is how I may be spending the day before Christmas....
Gordon,
I have been following your thread and hoping this would get closed, but I guess I have to jump in.....
If you are actually loosing coolant and can't see where and/or the engine is smoking more than you like, there is a even bet that you have an internal coolant leak. Mine was identified by the oil analysis and a doping of Bar's Leaks didn't fix it. So, my engine is coming out this winter.
There are three real good possibilities for such leaks.
A cylinder head gasket is a very common issue. More common in cold climates and even more if the engine is short cycled.
An intake gasket has coolant ports that can leak coolant into the lube oil. Said coolant will (mostly) come out of the lube oil when the engine gets to temperature. That vapor will get sucked into the intake system but the PCV system.
A third that I almost hate to bring up is a cracked cylinder head. Unfortunately, this is not a rare failure in the Olds 455.
What I would do if I were you and you are where it is cold (Quebec is even colder that Michigan) and the engine may not opened up for a while, is "Fog" the engine. Talk to some boat people. This is just an easy way to oil the bores and other bare metal internal parts to prevent corrosion. If you can't manage that, at least pull the plugs and squirt oil in to prevent damage.
And yes, as KenB said, changing out a modulator is simple, but do it when the transmission has just been shut down because it is at the running level of the fluid.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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Re: [GMCnet] Transmission vacuum modulator leaking?
By: jimk on Sat, 09 December 2017 23:27
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Re: [GMCnet] Transmission vacuum modulator leaking?
By: GMC.LES on Sun, 10 December 2017 05:18
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Re: [GMCnet] Transmission vacuum modulator leaking?
By: gibsongo on Sun, 10 December 2017 09:15
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Re: [GMCnet] Transmission vacuum modulator leaking?
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Re: [GMCnet] Transmission vacuum modulator leaking?
By: gibsongo on Sun, 10 December 2017 11:18
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Re: [GMCnet] Transmission vacuum modulator leaking?
By: bdub on Sun, 10 December 2017 11:28
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Re: [GMCnet] Transmission vacuum modulator leaking?
By: GMC.LES on Sun, 10 December 2017 11:45
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Re: [GMCnet] Transmission vacuum modulator leaking?
By: Larry on Sun, 10 December 2017 15:55
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Re: [GMCnet] Transmission vacuum modulator leaking?
By: gibsongo on Mon, 11 December 2017 22:33
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Re: [GMCnet] Transmission vacuum modulator leaking?
By: GMC.LES on Mon, 11 December 2017 23:02
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Re: [GMCnet] Transmission vacuum modulator leaking?
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Re: [GMCnet] Transmission vacuum modulator leaking?
By: gibsongo on Tue, 12 December 2017 10:49
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Re: [GMCnet] Transmission vacuum modulator leaking?
By: bdub on Tue, 12 December 2017 11:09
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Re: [GMCnet] Transmission vacuum modulator leaking?
By: jimk on Tue, 12 December 2017 11:39
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Question
By: gibsongo on Wed, 20 December 2017 09:36
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Re: [GMCnet] Question
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Re: Question
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Re: Question
By: gibsongo on Sun, 24 December 2017 12:31
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Re: Question
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Re: [GMCnet] Question
By: GMC.LES on Tue, 26 December 2017 08:25
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Re: [GMCnet] Question
By: gibsongo on Tue, 26 December 2017 21:43
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Re: [GMCnet] Question
By: GMC.LES on Tue, 26 December 2017 22:30
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Re: Question
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Re: [GMCnet] Question
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Re: [GMCnet] Transmission vacuum modulator leaking?
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Re: [GMCnet] Transmission vacuum modulator leaking?
By: gibsongo on Thu, 15 February 2018 20:12
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Re: [GMCnet] Transmission vacuum modulator leaking?
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Re: [GMCnet] Transmission vacuum modulator leaking?
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Re: [GMCnet] Transmission vacuum modulator leaking?
By: gibsongo on Fri, 16 February 2018 20:54
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Re: [GMCnet] Transmission vacuum modulator leaking?
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