Thanks to all who replied. Unfortunately I didn't have a chance to check any
thing this weekend after everyone replied.
But let me expand on my first post. When trying to start after a long drive,
the engine doesn't crank and turn trying to start--what would seem a fuel
issue.... Just the opposite. It will crank once then hesitate/stick for a beat
or two, then crank and then start. It is this hesitation/stick that I am
wondering about.
The thermal expansion James mentioned makes sense to me. But I don't think
(hope) it is borderline over heating as the cooling system, including radiator
and water pump, etc. is all new---well, less than 500 miles.
More thoughts?
Tim
Belleville, WI.
'70 SPL AND SRL
Still clueless but always learning
---- James Fogg <James@jdfogg.com> wrote:
> > Anyway, after running today, coming home then going back out
> > a short time later, my 70 1600 hesitated--almost a catch and
> > then a pause-- when I went to start her. She did start but
> > this hesitation is new. Usually she fires right up and idles
> > pretty smooth when warm.
> >
> > Any comments? Or am I just worrying needlessly? ( I worry
> > constantly so this part is nothing new!)
>
> If the starter motor gets very hot (from the exhaust in most cars, V8's
> especially) their internal resistance changes and they draw a lot more
> current, they appear "weaker". Alternatively, sometimes a hot engine can
> be "tight" from thermal expansion (or borderline overheating without
> indicating such). Also, sometimes fuel vapor will condense in the
> cylinders, or oil can weep down past the valve guides, and introduce a
> small amount of hydrostatic lock (increase in compression ratio) for the
> first rotation. It's also possible that your battery isn't charging and
> you got lucky with a successful start.
>
> Or, it may be nothing.
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