My 95 maxima se was running fine until the other day I was driving. It started hesitating or missing. The tune up is a year and a half old the fuel filter change is 2 years old. I use 93 or better octane and I just added a bottle of Cherevron Techron to the along with some water remover in the tank. I check all my injector connections and the appear tight.It starts right up with no problem What could be the problem? Please help thanks.

 

well i'd start by doing a tune up(spark plugs, oil, fuel filter, pcv, *seafoam if you never done it* cuzz a year and half is kinda long IMO!

-moo

 

this may hurt;

go to the dealership, ask for an engine flush,and a fuel system flush. spend the money. it will be worth it, i am not a big fan of the dealerships but twice a year i have these things done.take your own oil and filter, and keep up your maintance like clockwork.

 

Could be plugs, coil packs, or injectors

 

Sounds more like ignition problem. Bad coils?

 

Hey man, i am dealing with the same problem..QUESTION>>>Is it misfiring all the time, or is it just when it is is idling. Mine is only having a slight misfire when idling. I tuned it up, changed the air filter, cleaned the throttle body, changed the fuel filter, added lucas fuel injector cleaner, and on the next fill-up going to put some 93 octane...After all the replacements, it has gotten signifitly better. Better to do all the small stuff then if it don't improve..go to the more expensive troubleshooting..Like coils, (which are known to fail), fuel iinjectors, etc..sounds like the tune-up should be still good..You did use NGK's right?

 

On the way home from work today It stop the rough idle and smoothed out after two days of rough idling I am riding the Chevron Techron out till almost empty before I put new gas in. I am aso going to schedule a tune up change out the plugs pcv valve etc. I hear a lot of good stuff about seafoam what does it do and where can I purchase it? How much?

 

I actually saw seafoam last weekend at Advanced Auto Parts. Don't know how much...i have never tried it, but people on the forum see to like it. Hope that was the truth.