[DeTomaso] Happy for 50 miles or so then not

[michael@michaelshortt.com]

Start with buying a couple of cans of carb cleaner and spray all the lines,
manifold to head connections, carb base plate while the car is running, if
the idle changes,  there's your leak.

I'd look strongly at the brake booster,  40+ years old and doubtful it has
been serviced.

Michael Shortt
On Oct 28, 2013 10:53 PM, "Sean Korb" <spkorb at gmail.com> wrote:

> Do you have electronic ignition?  That happened on my Chevy Sprint,  The
> distributor module was going bad and it only took 50 miles at first but my
> intervals were shorter and shorter.  I could let it just cool all the way
> down and make it home.  It could well be just a bad ground or connector or
> even a wire.
>
>
> On Mon, Oct 28, 2013 at 10:38 PM, Robert Pink <robpink2012 at gmail.com>wrote:
>
>> Would appreciate some thoughts.
>>
>> When I first start my car and drive it runs great for 50 or 60 miles. At
>> 3000 RPM cruising the air/fuel ratio is high 13 to 14. The vacuum is 18 to
>> 20 and the car runs smooth.
>>
>> After about 60 miles the air/fuel ratio drops to low 10, the vacuum drops
>> to 13 and the car vibrates and runs rough.  It appears to be missing and I
>> suspect the ignition system.
>>
>> What is confusing is that if I stop for lunch or even after one night the
>> problem continues. But if  the car sits for a week or so it goes back to
>> running fine . The problem never occurs unless I drive 60 miles or so.
>>
>> Thanks for your thoughts
>>
>> Rob
>>
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>
>
> --
> Sean Korb spkorb at spkorb.org http://www.spkorb.org
> '65,'68 Mustangs,'68 Cougar,'78 R100/7,'60 Metro,'59 A35,'71 Pantera #1382
> "The more you drive, the less intelligent you get" --Miller
> "Computers are useless.  They can only give you answers." -P. Picasso
>
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