TwinTurbo.NET: Nissan 300ZX forum - Long post; please help. Sometimes hard start,
People Seeking Info
 
   


     
Subject Long post; please help. Sometimes hard start,
     
Posted by towlett on April 20, 2008 at 11:13 AM
  This message has been viewed 138 times.
     
     
Message occasional stall when clutched in rolling to a stop or through a slow turn-intersection. Car starts right back up with no problems. When revs first drop they go down to about 500, then the engine catches itself and idles steady at or just shy of 1000. Hard start is never cold, only warm after the car has been left for a minute or two. Typical situation would be stopping for gas, go inside to buy a soda, when I get back to the car it has to crank for a second or two before starting.

Could this be caused by simply running much too rich? I was hoping that my running rich was from boost leaks but I have tracked those down and the problem persists. The car has 555's and a JWT ECU to match (checked that with JWT using serial number), but I don't have the entire history of the car, maybe it was reprogrammed somewhere along the line?)

I'm considering an AFC but want to run through all other possibilities first. I'm also considering getting the car on a dyno so they can tell me how rich I'm really running. Last oil change there was some fuel in the oil, but that was before my tracking down the boost leaks.

I have done a boost leak test, fixed several things, best I can tell I don't have anymore, at least nothing major, car boosts and holds steady, boost no longer bleeds off, holds steady around 10PSI, my boost controller is currently turned off.

From 300ZX TT Road...

     
Follow Ups  
     
Post a
Followup

You cannot reply to this message because you are not logged in.