Sentra EX Saloon Question

**AirWolf** · August 27th, 2005 02:46 AM

Hello peeps! Question lang about this car.

While moving on low revs, the engine runs smoothly. On high revs, I notice that the engine cuts in and out. Parang palyado, hirap tumakbo, may hesitation yung engine to accelerate.

This is prominent when you step on the accelerator a little too deep. When you let it go a little, ok naman sya. I already had the following done:
- Changed Spark Plugs (Nippon Denso K20PR)
- Change Oil
- Change Air Filter, Fuel Filter, Oil Filter
- Change ATF (although this has no connection to the problem, had it done anyway).

I'm assuming its either a dirty Distributor/Rotor or faulty High Tension Wires. Or maybe a dirty Throttle Body and IAC Valve.

What do you guys think? The car is a 1998 Nissan Sentra EX Saloon A/T, Twin Cam, 1.4L, 16V, Fuel Injected.

THANK YOU IN ADVANCE.

**ghosthunter** · August 27th, 2005 08:44 AM

you might want to do the ff:
-ignition timing check, it might be advanced. Maybe retarding it two degrees would cure your problem.
-fuel pump, it might be starting to fail (?)
-have your fuel tank cleaned. Its possible that dirt in your fuel tank is clogging up your fuel intake.
-fuel injector cleaning.

**orly_andico** · August 27th, 2005 06:05 PM

probably a timing issue, as GH said. i have a similar problem, above 3000rpm my engine misfires continuously because the ECU is not retarding the timing (busted crank sensor). so in your case retarding the timing would reduce this effect (it would happen at higher rpm, or perhaps never at all..)

problem is i think this will reduce engine power significantly particularly at idle. not sure though..

**AirWolf** · August 27th, 2005 09:31 PM

Thanks ghosthunter and orly for your suggestions. I will give it a try. I'll update this thread for any developments.

**vinj** · August 28th, 2005 08:13 PM

Try to check your plugs again as well... Nissans use NGK BKR6E's or BKR5E's.

**AirWolf** · August 28th, 2005 11:08 PM

Thanks vinj, I'll give it a try too. So far, I had the tank and fuel lines cleaned, fuel pump checked and strong. Also re-adjusted the timing. Problem remains. I will check other options like the ones suggested here. THANK YOU!