Question about 1985 Nissan Pickup
OVER THE PERIOD OF ABOUT SEVEN DAYS OF DRIVING I NOTICED THE IDLE GETTING HIGHER AND HIGHER, THEN ONE DAY STUCK ON ABOUT 2000, THEN THE NEXT TIME I DROVE IT IT STUCK (IT SEEMS) WIDE OPEN - JUST HAD THE MECHANIC DO A HEAD GASKET AND VALVE JOB - I HAVE TECHNICAL SONS AND DO NOT WANT TO GO BACK TO THAT MECHANIC - can't afford it-WE CHECKED IT OUT LAST NIGHT AND CANNOT FIND ANYTHING OBVIOUSLY WRONG, BUT MY SON SEEMS TO THINK IT MAY BE MISSING A SPRING AT ONE SPOT- IT WAS NOT NECESSARY TO TAKE APART THE CARB TO DO THE HEAD GASKET, RIGHT? ANYWAY, WHAT IS YOUR OPINION? SIGNED, "READY TO GO TO WORK"
Some times on these older carburetors the fast idle cam gets stuck and may need lubrication. a fast idle cam is some linkage involving the warm up idle . vacumm leaks can also signicantly affect idle so I would recommend checking out these things.
a good way to check for a vacumn leak is to look for a hissing sound and try to locate its source you can find the tougher ones by using a short piece of 3/8 -1/2 inch rubber tubing as a mechanics stethescope if you don't have one.
put one end to your ear and the other to various vaccum hoses.
Posted on Aug 10, 2009
Bottom bolts on carb loose. Not the mounting bolts. You have to take carb off to see them on the bottom of the carb.
Posted on Feb 26, 2009
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Posted on Jan 02, 2017
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