More likely an issue with product design, maintenance or defective
components with the '89 Isuzu Trooper. My '85 720 pickup with a Nap-Z24
engine has more than 261K miles and has never had the head or even the carb
off and still runs fine. Similar reliability has been found with Z-cars
with "L" series engines. These vehicles have aluminum heads and manifolds
in conjunction with cast iron blocks.
Stan
At 02:37 PM 7/2/2004 -0700, Pete Peters wrote:
I had problems on my '89 Isuzu Trooper due to an aluminum
>intake manifold (and heads?) on an iron block, which resulted in 4 engines.
>Not really interested in going there again, lol.
>
>Pete
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