1991 Nissan Maxima engine runs rough

JPM35

MEMBER
1991 NISSAN MAXIMA
6 CYL
FWD
AUTOMATIC
166,000 MILES

Hi guys, My problem is with the engine running rough. This problem recently started. Engine starts ok, but seems to shake slightly in engine bay and exhaust makes a putt-putt-putt sound at tailpipe. Taking off from a stop and the engine seems a little sluggish and choppy sounding. I recently changed all six spark plugs, but not cap and rotor as they appeared to be ok.

5 Replies

DOCFIXIT

MECHANIC
18,828 POSTS

First check pluge see if one got loose and all wires are firmly seated. If all good need a compression test

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Thursday, September 17th, 2009 AT 3:18 PM

JPM35

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3 POSTS

I forgot to mention that this is problem is intermittent. Sometimes after starting the car it is fine, runs smooth. Other times it occurs.

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Thursday, September 17th, 2009 AT 6:49 PM

DOCFIXIT

MECHANIC
18,828 POSTS

Intermittent is a problem could be several things. Have you tried checking for codes in ECU?

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Friday, September 18th, 2009 AT 11:39 AM

JPM35

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3 POSTS

Yes, I did check computer. In diagnostic mode 3, I try to see if any codes were stored and I only rec'vd code: 55, which means no codes stored. I also must note that I haven't been driving the car as often I used to in the last year or longer. I'll drive it around to charge -up battery every couple of days. Maybe problem is as simple as a little water in fuel or a build-up of carbon in intake area.

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Saturday, September 19th, 2009 AT 11:19 AM

DOCFIXIT