Engine runs rough

[photohiker]

I have a 1992 Nissan Sentra with a 1.6L engine(170,000 miles) that starts ok, but runs rough & idles rough. It also has a real lack of power when accelerating. I changed the oxygen sensor & inspected vacuum hoses for leaks, but no change. Any ideas would be a great help! Mike

[way2old]

When was the last time it was tuned up? Including air and fuel filters?

[photohiker]

The spark plugs were last changed about 10,000 miles ago, and the fuel filter was last changed about 30,000 miles ago.

[jgate]

I think I would try a complete tune up first.
Plugs, cap rotor,wires, air filter and fuel filter.
You didn't say if the cap, rotor, and wires were ever changed .
after 170,00 miles. they have to be in need of replacement.

[henrydavies]

Hello all, i am a new member of this forum. I am really interested to discuss about the car repairing. Please share some tips for running the engine smooth.

[toughlove887]

Did the tune up work? Funny,my car always ran rough at startup and when I went to 92 gas it stopped

[ethanparker3055]

Hello, what are the odds of damaging bike engine if we use different types of oils on different intervals. I was using lubricant oil then I put microbe oils and I think there should be some kind of effects should turn on here.