Hard or no start - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

ej2civic · 02-10-2007, 06:29 PM

alright well my car is incredibly hard to start when it is cold. it will just turn over and nothing will happen. If i spray a little carb cleaner in the intake it will sometimes start and i will have to work with the gas and keep it above 2500 or it will die, but sometimes it wont start and it will just popple a few times and then do nothing unless i spray more something in the intake, and other times i try like 10 times and i give up because nothing happens. if i can get it started, when it warms up alittle bit it is fine and idles perfect. my question is what would make it start this hard. I know it is like 25°F out but that shouldn't make it so it doesn't start. After the car is warm if i shut it off it fires right back up with no problem at all. Thanks for the help

It is a 1990 SOHC 5spd

idlafie · 02-11-2007, 02:04 AM

Check the vacuum line going to the fuel pressure regulator along with the vacuum lines running from the carbon cannister to the intake & the gas tank. It sounds like you have vapor lock but that shouldn't happen to your car.
http://www.misterfixit.com/vaprlock.htm
For the times where your engine does not want to start, try pulling the spark plugs & verify that you are getting fuel in the combustion chamber. If you are, then check your EGR valve - make sure it is not sticking.
Try the aforementioned & see if it helps.
ID

ej2civic · 02-13-2007, 05:10 AM

ya i don't think this is it. all the vacuum lines look good. plus it usually doens't happen to fuel injected cars. thanks though

ladiesman8527 · 02-13-2007, 08:11 AM

possibly a bad coolant temp sensor?

02-10-2007, 06:29 PM	#1
ej2civic Leaky Injector Join Date: Jun 2006 Location: Northern CT Posts: 105 Trader Rating: (0) Feedback Score: 0 reviews	Hard or no start alright well my car is incredibly hard to start when it is cold. it will just turn over and nothing will happen. If i spray a little carb cleaner in the intake it will sometimes start and i will have to work with the gas and keep it above 2500 or it will die, but sometimes it wont start and it will just popple a few times and then do nothing unless i spray more something in the intake, and other times i try like 10 times and i give up because nothing happens. if i can get it started, when it warms up alittle bit it is fine and idles perfect. my question is what would make it start this hard. I know it is like 25°F out but that shouldn't make it so it doesn't start. After the car is warm if i shut it off it fires right back up with no problem at all. Thanks for the help It is a 1990 SOHC 5spd

02-11-2007, 02:04 AM	#2
idlafie Zilvia Addict Join Date: Mar 2004 Location: ..So Cal.... Posts: 940 Trader Rating: (0) Feedback Score: 0 reviews	Check the vacuum line going to the fuel pressure regulator along with the vacuum lines running from the carbon cannister to the intake & the gas tank. It sounds like you have vapor lock but that shouldn't happen to your car. http://www.misterfixit.com/vaprlock.htm For the times where your engine does not want to start, try pulling the spark plugs & verify that you are getting fuel in the combustion chamber. If you are, then check your EGR valve - make sure it is not sticking. Try the aforementioned & see if it helps. ID __________________ Weekend Mechanic for my Not-So-Mechanically-Inclined buddies....

02-13-2007, 05:10 AM	#3
ej2civic Leaky Injector Join Date: Jun 2006 Location: Northern CT Posts: 105 Trader Rating: (0) Feedback Score: 0 reviews	ya i don't think this is it. all the vacuum lines look good. plus it usually doens't happen to fuel injected cars. thanks though

02-13-2007, 08:11 AM	#4
ladiesman8527 Zilvia Junkie Join Date: Dec 2005 Location: Collierville, TN Age: 38 Posts: 429 Trader Rating: (0) Feedback Score: 0 reviews	possibly a bad coolant temp sensor?