Mechanics

ROUGH IDLE...

1997 Nissan 180SX • 4 cylinder Manual • 140,000 miles

HI, I replaced the timing chain on a 97 nissan 4x4 2.4 pick up. It fired right up. Know I can't control the idling. I adjusted the air mix screw, tps. Timing and no luck. Can you please give an idea ! Thanks.
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Mauricio corleto
January 28, 2011.



Recheck the timing belt installation. Were the gears and chain timed correctly?

KHLow2008
Feb 3, 2011.
100%. The engine fired right up after it was done !What it confuses me it seems to be a air leak under the throttle ! And I do not see any vac. Line off !

Tiny
Mauricio corleto
Feb 3, 2011.
Firing right up does not necessarily mean the timing chain had been timed correctly.

Use carb cleaner to check for vacuum leakages. Ensure there are no leakages between the MAF and throttle body, along the air hoses.

Check the ignition timing.

KHLow2008
Feb 6, 2011.