Weird engine hesitation/bucking at 3k-ish or when turning??? HELP - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

zeebrah · 09-21-2011, 02:46 PM

Ok so i have shitty single sohc that has deff seen better days...but at least up untill recently ran decent.

THE PROBLEM: in a straight line the car seems sluggish/hesitates/boggs then at about 3k gets its power back and bucks forward pretty hard at that point.

now the most annoying part, ON TURNS it bucks/shakes pretty good throughout the whole turn untill im straight again?? feels like when traction control kicks in on other cars. or like someone is just tapping the brakes on.off.on.off. ....but if i throw the car in neutral and dont give it gas through the turn it hands perfect..... can also describe it like the skipping a welded diff causes at low speeds...buuut will do it at any speed and much more violent.

Some more info... the car was sitting for about a year.. i would start it every once and awhile tho to keep shit lubed and so gas wasnt just sitting. while decomissioned i put in an new clutch/flywheel, welded diff and header with just ok fitment.

-i originally though i fucked up the clutch install at it was slipping...? but would this cause it to bogg/hesitate at low rpms? and why would it do it alot worse on turns?

-i thought maybe the welded diff but it does it at all speeds and much harsher then the typical parking lot chirp...

-maybe the not perfect header fitment was causing bogging? but it doesnt seem to be leaking air or anything

-possibly bad/leaky injectors? but why would it do it worse on turns?

HELP PLEASE THIS IS FUCKING ANNOYING

s13whore · 11-26-2011, 01:07 AM

man im having the same problem with my dohc let me know if you fix it and what it was please its so annoying ill let you know if i fix it

redline1320 · 11-26-2011, 01:20 AM

fuel filter or pump....could be old rusty gas tank as well

ih8bmps · 11-26-2011, 02:10 AM

+1 sounds like your having fuel issues. that would explain why its acting up threw the turns when the fuel is sloshing around. yank out that fuel pump replace it and look into the tank with a flashlight to see if there is any rust.

09-21-2011, 02:46 PM	#1
zeebrah Zilvia Junkie Join Date: Jun 2011 Location: Yobro Linda Posts: 429 Trader Rating: (14) Feedback Score: 14 reviews	Weird engine hesitation/bucking at 3k-ish or when turning??? HELP Ok so i have shitty single sohc that has deff seen better days...but at least up untill recently ran decent. THE PROBLEM: in a straight line the car seems sluggish/hesitates/boggs then at about 3k gets its power back and bucks forward pretty hard at that point. now the most annoying part, ON TURNS it bucks/shakes pretty good throughout the whole turn untill im straight again?? feels like when traction control kicks in on other cars. or like someone is just tapping the brakes on.off.on.off. ....but if i throw the car in neutral and dont give it gas through the turn it hands perfect..... can also describe it like the skipping a welded diff causes at low speeds...buuut will do it at any speed and much more violent. Some more info... the car was sitting for about a year.. i would start it every once and awhile tho to keep shit lubed and so gas wasnt just sitting. while decomissioned i put in an new clutch/flywheel, welded diff and header with just ok fitment. -i originally though i fucked up the clutch install at it was slipping...? but would this cause it to bogg/hesitate at low rpms? and why would it do it alot worse on turns? -i thought maybe the welded diff but it does it at all speeds and much harsher then the typical parking lot chirp... -maybe the not perfect header fitment was causing bogging? but it doesnt seem to be leaking air or anything -possibly bad/leaky injectors? but why would it do it worse on turns? HELP PLEASE THIS IS FUCKING ANNOYING

11-26-2011, 01:20 AM	#3
redline1320 Zilvia Junkie Join Date: Dec 2009 Location: FL Age: 33 Posts: 315 Trader Rating: (0) Feedback Score: 0 reviews	fuel filter or pump....could be old rusty gas tank as well __________________

11-26-2011, 01:07 AM	#2
s13whore Join Date: Nov 2011 Location: carrollton Age: 31 Posts: 31 Trader Rating: (0) Feedback Score: 0 reviews	man im having the same problem with my dohc let me know if you fix it and what it was please its so annoying ill let you know if i fix it

11-26-2011, 02:10 AM	#4
ih8bmps Leaky Injector Join Date: Mar 2011 Location: las vegas Age: 33 Posts: 149 Trader Rating: (0) Feedback Score: 0 reviews	+1 sounds like your having fuel issues. that would explain why its acting up threw the turns when the fuel is sloshing around. yank out that fuel pump replace it and look into the tank with a flashlight to see if there is any rust.