Question about 1988 Isuzu Pickup 2WD

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My 1988 Isuzu PUP has an air leak around the throttle linkage of the carburator. Any solutions without replacing the carb? Any sites recommended for finding a good replacement carb?

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The throttle body on those carburetors does NOT use a bushing for the throttle shaft. They are single-use only, and not serviced separately. You may be able to find a replacement throttle body, as they were available in their parts system at one point, but that was decades ago.

Posted on Oct 09, 2010

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some of your new parts might be manufacture defected because the manufacture does not test every part coming from the lines. ANother thing have you checked the timing out with a timing gun to see if the timing is ok ? ANother also did you replace the new dist. cap and button in the right place of the old one was at ? Sometimes when you change some things with your car that you also have to check for timing issues because where and how you put the dist. cap and button at if not the way of the old one was. It could be off alittle bit to make this happen.

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It sounds like a defective/sticking Idle Air Control Motor(IAC) or a sticking throttle blade or linkage at the throttle body base.
Before anything try to observe by eye anything that appears to look defective, broken or misaligned, such as a broken throttle linkage return spring or the like.
Also apply a good spraying over all the movable linkage parts with WD 40 or its counter part product of your choice.
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