Nissan Sentra Series 3 EX SALOON 97'' NEED HELP!!

**overdrive26** · January 30th, 2009 03:36 PM

Guys, need help... the problem is pag tumatakbo ung auto ng mga 80 pataas eh umuusuk ng sobra sobra, kaya nung una eh nag pa tune up ako, change oil, oil filter, fuel filter, spark plug, high tension wire.. then di parin natanggal ung problema.. then sabi ng mekaniko ko baka ung piston ring palitin na den. then pina overhaul kuna ung engine pero same parin ang problem pag takbo ko ng mga 80 eh umuusuk parin ng sobra sobra, any comments or suggestions?? tnx.

**oj88** · January 30th, 2009 04:00 PM

It's possible that coolant water is somehow getting into the combustion chamber. That could mean either a blown head gasket or a cracked block.

**overdrive26** · January 30th, 2009 05:22 PM

Ok thanks.. well pa check ko nalang sa personal mechanic ko... pero im sure na hindi cracked block since binaba namin okay lahat.. next step siguro dalhin ko sa nissan casa for engine analyze, how much mag pa analyze ngayon? any ideas? di rin kaya cost ng injectors ung sobra sobrang usok? salamat po.....

**bryant77** · February 1st, 2009 12:46 AM

check the PCV valve yun nakakabit sa valve cover with hose goin to the intake. THis problem happened to me before with speed 80km/h above umuusok na yun tail pipe. Yun pala nag stuck-up yun PCV valve yun oil pumapasok sa intake causing the engine to emit white/bluish smoke. HTH.

Check mo yun intake mo kung may oil, remove the air filter housing, pull accelerator cable para mag-open yun throttle plate, then silipin mo kung may traces ng oil.

By the way buy the original PCV valve (OEM) cost around 800-1000 pesos. aftermarket one like cuircit brand won't work.