I recently had my fuel pump & filter changed be cause it wasn;t staning crank. Then I had a PCV Valve installed, two days after this the car started to rev really high. So I added fuel injector cleaner. Could there be a problem with the engine. It is a 1994 Nissan Sentra w/ Manual transmission it is the 1.4 Liter. Now it Revs up for about 5 secs then runs normaly for about 2 secs and goes back and forth. Will this ruin my engine. because my check engine light isn;'t coming on at all. I also added a fuel injector cleaner and itgo worse is this bad gas
2007-03-29 12:18:35 · 3 answers · asked by Sick Nissan 1 in Cars & Transportation ➔ Maintenance & Repairs
vacuum hose came off somewhere on the intake maifold.
Listen for a high pitched sucking noise, and feel around for a place a small hose is supose to connect to.
2007-03-29 12:22:54 · answer #1 · answered by Mr. KnowItAll 7 · 0⤊ 0⤋
Could be a vacuum leak in the fuel pressure regulator or vacuum hose leaks.
2007-03-29 12:24:12 · answer #2 · answered by (A) 7 · 0⤊ 0⤋
your o2 sensor could be bad. your throttle position could be bad. take it in
2007-03-29 12:25:30 · answer #3 · answered by ikeboywonder 2 · 0⤊ 0⤋