HEsitation, and Service Manual - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Alias · 03-14-2002, 09:14 PM

My Car: 91' Fastback 145KMiles
First off,
My engine seems to hesitate under load from about 2-3.5k sometimes. It doesn't start until it warms up, and its comes and goes. Sometimes it bogs down, sometimes it kinda "chugs". I replaced the fuel filter, plugs, and wires. When doing the plugs they looked almost perfect after 50Kmiles. Showing only the normal grayish/brown deposits. So it leaves me thinking its something related to fuel delivery. Maybe the pump gets warmed up and surges? I have no clue guys. I know my way around cars, but I'm not much of an expert <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt='

'>

Secondly,
I couldn't find a service manual for my 91' Fastback, so I grabbed the one for the 93' on up. It should be the same right? Same drivetrain, just diferent body? Thanks!

S13Grl · 03-14-2002, 09:39 PM

Also, try cleaning your throttle and look at your ail filter. Are your injectors okay?

Alias · 03-14-2002, 09:51 PM

Air filter is new, How do I check my injectors? I cleaned them with an aditive. That did nothing <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt='

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Alias · 03-14-2002, 09:51 PM

Air filter is new, How do I check my injectors? I cleaned them with an aditive. That did nothing <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt='

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Alias · 03-15-2002, 04:30 PM

Bump!

S13Grl · 03-15-2002, 06:44 PM

See if they're leaking for one. You can take it to a shop and have someone test them. You could also check your fuel pump out. Check your fuel lines as well.

Arcane · 03-15-2002, 06:54 PM

i had they same prob...check to see if you throttle body is a gummed up...that was the fix for my situation...other than that, i'd check you ENTIRE fuel delivery system...good luck...

03-14-2002, 09:14 PM	#1
Alias Zilvia Member Join Date: Mar 2002 Location: Piqua,OH Posts: 229 Trader Rating: (0) Feedback Score: 0 reviews	My Car: 91' Fastback 145KMiles First off, My engine seems to hesitate under load from about 2-3.5k sometimes. It doesn't start until it warms up, and its comes and goes. Sometimes it bogs down, sometimes it kinda "chugs". I replaced the fuel filter, plugs, and wires. When doing the plugs they looked almost perfect after 50Kmiles. Showing only the normal grayish/brown deposits. So it leaves me thinking its something related to fuel delivery. Maybe the pump gets warmed up and surges? I have no clue guys. I know my way around cars, but I'm not much of an expert <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=''> Secondly, I couldn't find a service manual for my 91' Fastback, so I grabbed the one for the 93' on up. It should be the same right? Same drivetrain, just diferent body? Thanks!

03-14-2002, 09:51 PM	#3
Alias Zilvia Member Join Date: Mar 2002 Location: Piqua,OH Posts: 229 Trader Rating: (0) Feedback Score: 0 reviews	Air filter is new, How do I check my injectors? I cleaned them with an aditive. That did nothing <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=''>

03-14-2002, 09:51 PM	#4
Alias Zilvia Member Join Date: Mar 2002 Location: Piqua,OH Posts: 229 Trader Rating: (0) Feedback Score: 0 reviews	Air filter is new, How do I check my injectors? I cleaned them with an aditive. That did nothing <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=''>

03-15-2002, 06:54 PM	#7
Arcane Zilvia Junkie Join Date: Nov 2001 Posts: 597 Trader Rating: (0) Feedback Score: 0 reviews	i had they same prob...check to see if you throttle body is a gummed up...that was the fix for my situation...other than that, i'd check you ENTIRE fuel delivery system...good luck... __________________ it's called a life...maybe you should get one!!!

03-14-2002, 09:39 PM	#2
S13Grl Married to the Mob Join Date: Dec 2000 Age: 44 Posts: 3,670 Trader Rating: (0) Feedback Score: 0 reviews	Also, try cleaning your throttle and look at your ail filter. Are your injectors okay?

03-15-2002, 04:30 PM	#5
Alias Zilvia Member Join Date: Mar 2002 Location: Piqua,OH Posts: 229 Trader Rating: (0) Feedback Score: 0 reviews	Bump!

03-15-2002, 06:44 PM	#6
S13Grl Married to the Mob Join Date: Dec 2000 Age: 44 Posts: 3,670 Trader Rating: (0) Feedback Score: 0 reviews	See if they're leaking for one. You can take it to a shop and have someone test them. You could also check your fuel pump out. Check your fuel lines as well.