[Mgs] wicked mechanic!

[Richard Guenard]

Another issue not touched upon is a clogged water jacket in the block,
especially if the car has sat for a while.  The blockage can cause cracked
head which I experienced.
Best regards, 
Rick G. '78B

-----Original Message-----
From: mgs-bounces at autox.team.net [mailto:mgs-bounces at autox.team.net] On
Behalf Of Paul Hunt
Sent: Friday, July 29, 2011 4:36 AM
To: Aubrey Schneider; mg list
Subject: Re: [Mgs] wicked mechanic!

What do you mean by overheats?  A car is only overheating if it is losing 
coolant or steaming.  However it can run hotter than it should for a very 
wide range of reasons, in two categories.  One is that the cooling system 
isn't capable of getting rid of as much heat as it should, the other is the 
engine is generating more heat than it should.

The first can be caused by things like obstructions anywhere in the cooling 
circuit i.e. debris or sludge, a thermostat not fully opening when it 
should, corroded water pump vanes causing low circulation etc.

The second can be things like tight bearings, incorrect ignition or carb 
settings which should be relatively easy to resolve.

Of course, the gauge could simply be over-reading, so if that is the only 
indication then check the actual coolant temperature with a thermometer.

Running-on is an indication that the combustion chambers are hotter than 
they should be, although mid-70s engines do seem prone to it especially on 
unleaded, and anti-runon valves wee fitted to North American spec from 1973 
on.  This system is closely integrated with the emissions plumbing, problems

with that usually mean that it won't pass the smog tests, so maybe the 
non-functioning valve (if it's still fitted) has an electrical problem.

PaulH.

----- Original Message ----- 
From: "Aubrey Schneider" <aschneider at shaw.ca>
To: "mg list" <mgs at autox.team.net>
Sent: Thursday, July 28, 2011 7:54 PM
Subject: [Mgs] wicked mechanic!


> Hi,
>
> My name is Aubrey & I was involved with the list up to 7 yrs ago. Pse bear
> with me.
> After being idled for 7 yrs, due to my health problems,I wanted to put it 
> back
> on the road.
> I was an OF then but now I'm a bigger one & don't remember much how things

> go
> back.
>
> I was recommended to a "so called " excellent fellow who said yes he will 
> get
> it through Air Care
> ( our smog inspection ).
>
> Long story short.
>
> He had 2 attempts to get the vehicle running correctly & although it 
> passed
> Air Care, it runs ok, with the following problems.
>
> The car overheats.
> He said he had to change TDC. Now misses.
> Have 94 octane in & it still runs on.
> Has ok performance
> Chews gas.
>
> I'm sorry to ask you folks but I cannot find this problem in the archives.
>
> Could someone direct me where to look, or if you choose to comment I'd be 
> most
> grateful.
>
> Thank you very much
>
> Aubrey Schneider 75 B
>
> Beautiful British Columbia
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