[DeTomaso] 302 diagnosis

[dyogi]

Thanks for all the replies!  

 

The cam and lifters are new and the break in seems to have gone well.  The
engine runs like a champ until it warms up although the vacuum always seems
low.  It runs great until it reaches normal running temperature, then the
idle starts to drop until it dies.  If throttle is applied, the engine will
continue to run well but not idle.  It will restart easily after it dies.  

 

I had the motor out because I was having problems with the engine dying
during drives.  I had thought it was the timing chain and replaced that as
the old one was worn and stretched.  While the engine was out, I replaced
all of the gaskets including the head gaskets.  The bores looked in really
good shape with almost no ridge.  The heads also looked good so I only
changed the valve seals.  The engine has 24,000 original miles on it.  No
exhaust popping or backfiring.  The motor runs really good until it is
warmed up.  Starts right up and idles great even when cold.  I guess that
the timing chain was a factor in the original problem as the engine now runs
great until warmed up.  It barely started when I first pulled it out.

 

Thanks all!

 

Dennis

 


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