spark/engine hesitation on 1991 Nissan 240SX

hi my nissan 4 cylinder auto trans truck has a skip when driving the highway at 60 MPH not all the time. once in a while like the spark stops or something and then carries on not again for a long time or a short time. Not a comsistant thing.Noticable when it happens.

by in Columbus, OH on January 23, 2011
1 answer 1 comment
ANSWER by on January 23, 2011
Really need to carefully inspect all of your tune up parts i.e. wires, plugs, car, rotor as well as your fuel filter and air filter. I never let these go for more than 30k and the air filter I replace every year.
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COMMENT by on January 23, 2011
Thanks for your prompt reply. I put new plugs in. the cap all 4 contacts were really corroded up i had to scrap the white hard carbon off them it did run better. Maybe the cap needs replacing otherwise it sits and idles nicely. the rpms flictuate up and down a bit but thats all. Norm