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Thank You for the reply. Since you are a moderator for "Just Ask" If you could just find out why I did not receive the two illustrations the first mechanic
intended to Email me with his suggestion about disconnecting certain vacumn lines that used to go to the engine pump- to correct the problem -that would be helpful. (maybe the solution would have been to "mail" me his answer with the illustrations intact. I of course would need his ANSWER again with the illustrations. It's been so long ago, I have probably thrown away the email correspondence. I never worked on the car to try
to correct the problem- have just adapted to driving it the way it is.
Any Isuzu, former mechanic (experienced with the Isuzu Trooper ll 4 cyl. 2.6 gas engine) would have probably already had the experience of trouble shooting and correcting this problem.
The cars have been around for many years and there is quite a following even today.