2002 Nissan Sentra

TEACH1

MEMBER
2002 NISSAN SENTRA
4 CYL
FWD
AUTOMATIC
112,000 MILES

My Nissan Sentra is flouling out my spark plugs after 75 miles of driving. I pull the plugs and they are soaked with gas. I have changed the fuel pressure regulator fuel pump. After a week of driving my car become hard to start I have to hold the pedal to the floor. This work for a few days after that I have to replace the plugs. It not buring oil, it using more then average antifreeze but not burning it. Not sure what the problem is Took it to a shop and they indicated fuel pump replaced it and still the same problem? The also tend to have black carbon on them as well.

3 Replies

KHLOW2008

MECHANIC
41,815 POSTS

Hi Teach1,

Thank you for the donation.

If the plugs are fouling due to flooding, one of the likely cause is a bad injector.

The difficult starting could be due to a fault with the MAF.

Is the Check Engine Light indicating while driving?

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Monday, March 22nd, 2010 AT 1:28 PM

TEACH1

MEMBER
3 POSTS

I check the injectors I got a good spray, the check engine came on a month ago misfire on the number cylinder I change the number 3 coil and reset the code and the light did not come back on. Four days later is started doing the same thing. It been doing it ever sense. How do I check for A bad MAF?

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Monday, March 22nd, 2010 AT 2:54 PM

KHLOW2008

MECHANIC
41,815 POSTS

If no trouble codes are present, you would need to perform test on the MAF.

Scanners with the capability to read the MAF condition would be required to test it.

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Monday, March 22nd, 2010 AT 3:40 PM