Vehicle runs fine with at least a little throttle but runs rough at idle.

1985 NISSAN TRUCK
150,000 MILES
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FLYNPA
  • MEMBER
  • 1 POST
My friend's son drives a 95 nissan truck to high school. He says that it runs fine with a little pedal but runs really rough at idle. I don't know much about this. He did ask if a disconnected vacuum line could cause it. I am gonna look at it tomorrow. Any suggestions?
Dec 9, 2011 at 4:39 PM
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RIVERMIKERAT
  • ✓Experienced Mechanic
  • 6,106 POSTS
Yes, it sounds definitely like a vacuum leak. Use a can of Berriman's Carb and Choke cleaner. Spray it over the vacuum lines and fittings to locate the leak. The idle will change when the leaking part is sprayed.
Dec 9, 2011 at 5:04 PM
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