wright_280z

I am looking into purchasing a fuel rail cooling fan. Any suggestions on attempting to insulate?

I will look at the FSM, any simple way of accessing those hoses? Christopher

Thanks for the replies! So today I replaced the Fuel Pressure Regulator (Simple...) went in easy and restarted just fine. Let it warm up then shut her off. Came outside about 20 minutes later and started it the "Stutter" was back... Fuel pressure reads fine. So, do you think my Air Flow Meter (AFM) is acting up, or out of adjustment? Christopher

CHAS, I noticed there is a hairline crack in my fuel pressure regulator and the hose linking to the manifold is split... After I replace the regulator I will test from there on forward... Do you still think its a pressure issue? Or sensor? Have you ever experienced this issue? Christopher

Ah... Yes! You both are correct. The Datsun is continuing to give me a problem. The issue still remains. Not every time, but on the occasional start-up you will hear and sometimes feel a "Stutter or Hesitation" for approx 30 sec. I also notice that my oil gauge tends to take its sweet time getting to the half way point... I noticed the fuel filter looked "Abnormally Big" so I replaced it with one that was meant for the vehicle and was a tad smaller, that helped the start-up issue. I also replaced the fuel pump today... started the Datsun multiple times (20 plus) and only once did it have the "Hesitation or Stutter" I can't figure this out for the life of me... I am replacing the Fuel Pressure Regulator and the hose linking it to the manifold in the AM. Still think there is something I am missing.........? Any Suggestions? I have since refilled the fuel tank at least twice no excessive gas smell. Which is great because I can't keep carrying tylenol with me...haha. I really am driving my self insane trying to figure it out. I do have one shop that can look at it, but I really enjoy working on my own car...plus saves money to help repaint it! All comments and experiences are appreciated! Christopher

Hello fellow Z owners! After driving my Z the past few weeks, I had noticed the vehicle had a "Hard Start or Stutter" after it had warmed up and was restarted. I put 91 fuel and injection cleaner in the tank for a week. No change... I had also noticed an excessive fuel smell while driving my Z and especially after filing her gas tank. Enough was enough I had a massive headache each time I had taken the Z out for a drive. I decided to check my Air Flow Meter (AFM) was operating just fine, Also checked my Cold Start Valve/Injector that was fine. Lastly I decided to tear the Fuel Injectors out (Stock) and looked at all the tips and hoses. Hoses were fine...The tips were cracked and discolored. I was hoping to clean them and out them back in, but of course that would have been a bad decision down the road. So, I went to NAPA and purchased RE-MAN made by RAM, (Nissan doesn't manufacture them anymore) I know many people on the forums have said, "NO REMANS" but no excuse was given. They went right in just fine. I recommend that you use a little oil on the new O-Rings, Even if you take out your old ones and clean them spend the extra money and buy the new O-Rings. I used a little "Electrical/Conductor Grease" on the tipsTotal job time was about 1 1/2 hours. Plus my drive time...to get the new injectors. The car now starts better, sounds better. No more excessive fuel smell. Gas mileage has increased (Not really expecting the best) I just thought I would write this post, due to the lack of people writing about this issue and elaborating on it. If anyone has any questions I will reply! Best of Luck Christopher 1976 Datsun 280z (Dottie)