Pulled the plugs on my SR... - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

SHIFT_*grind* · 10-09-2007, 10:40 AM

OK, I'll try to get some pics when I get home. It's a 97/98 blacktop S13, so it's a little newer than most.

I'll also mention that I've been having a mid-range bog, right around 3, 3.5K. It feels like it's holding back, then I shift and it backfires (so I figured it was running rich). Yesterday I changed the plugs, put in a new Z32 fuel filter, new water temp sensor, new fuel pump o-ring (because there wasn't one

) and hopefully my new O2 sensor will be in today at the parts store. Haven't driven it yet but I'm hoping it'll be fixed...

If not, should probably pull my injectors and check? I'll also:

-Check fuel pressure; I have a Walbro and a stock regulator, maybe it's going out
-Swap for another MAF and see if that helps
-Check timing
-Check for boost leaks; already did, but I'll check again

Also, would there be any reason to think I could just get some good fuel system cleaner, pour it in the tank and go easy on the car for the next couple hundred miles while it cleans things out?

10-09-2007, 10:40 AM	#3
SHIFT_grind Nissanaholic! Join Date: Nov 2004 Location: NWA Age: 42 Posts: 2,066 Trader Rating: (7) Feedback Score: 7 reviews	OK, I'll try to get some pics when I get home. It's a 97/98 blacktop S13, so it's a little newer than most. I'll also mention that I've been having a mid-range bog, right around 3, 3.5K. It feels like it's holding back, then I shift and it backfires (so I figured it was running rich). Yesterday I changed the plugs, put in a new Z32 fuel filter, new water temp sensor, new fuel pump o-ring (because there wasn't one ) and hopefully my new O2 sensor will be in today at the parts store. Haven't driven it yet but I'm hoping it'll be fixed... If not, should probably pull my injectors and check? I'll also: -Check fuel pressure; I have a Walbro and a stock regulator, maybe it's going out -Swap for another MAF and see if that helps -Check timing -Check for boost leaks; already did, but I'll check again Also, would there be any reason to think I could just get some good fuel system cleaner, pour it in the tank and go easy on the car for the next couple hundred miles while it cleans things out? Last edited by SHIFT_grind; 10-09-2007 at 11:03 AM..