HELP: My car loses a lot of power at 4000-5500rpm - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

akwon · 02-18-2006, 02:05 AM

To tell you exactly, what happens is when I accelerate (to redline), the car will pull hard up to 4000rpm then taper off at 5500rpm and then continue to pull hard past 5500 to redline. So its like; "weeee, ahh shit, weeeee". I thought it was the clutch, but my mechanic friends said it wasnt because when a clutch goes, its usually consistent in high RPMS and they also did a "stalling in 4th-gear at a stop" test and the car even passed that. Any of you have ideas what it could be? I was thinking fuel filter...possibly pump? Thanks for looking

TougeSR20Kid · 02-18-2006, 02:12 AM

Check the timing when my KA went it would pull until higher RPM's when it would die... I too thought it was the clutch but it was my cam timing

akwon · 02-18-2006, 11:49 AM

How do I check the timing? How do I adjust the timing correctly?

TougeSR20Kid · 02-20-2006, 09:01 PM

unfortuneately the only way to check cam timing is to take off the valve cover set the crank to tdc and check to see if the marks on the chain and sprocket line up... the ignition timing you need to have a timing light to check it in which case your better off taking it to a shop and having them run a diagnostic cus it could be a number of things

ryan hagen · 07-31-2006, 09:38 PM

is our timing supposed to be at 15 or 20 btdc?
i have a similair problem

02-18-2006, 02:05 AM	#1
akwon Join Date: Feb 2006 Location: College Park MD Posts: 40 Trader Rating: (0) Feedback Score: 0 reviews	HELP: My car loses a lot of power at 4000-5500rpm To tell you exactly, what happens is when I accelerate (to redline), the car will pull hard up to 4000rpm then taper off at 5500rpm and then continue to pull hard past 5500 to redline. So its like; "weeee, ahh shit, weeeee". I thought it was the clutch, but my mechanic friends said it wasnt because when a clutch goes, its usually consistent in high RPMS and they also did a "stalling in 4th-gear at a stop" test and the car even passed that. Any of you have ideas what it could be? I was thinking fuel filter...possibly pump? Thanks for looking

07-31-2006, 09:38 PM	#5
ryan hagen Zilvia FREAK! Join Date: Jan 2003 Location: rhinelander wisconsin Age: 42 Posts: 1,465 Trader Rating: (8) Feedback Score: 8 reviews	is our timing supposed to be at 15 or 20 btdc? i have a similair problem __________________ 1990 hatch ka24de gt2871r

02-18-2006, 02:12 AM	#2
TougeSR20Kid Zilvia Junkie Join Date: Dec 2005 Location: Seattle WA Age: 38 Posts: 452 Trader Rating: (1) Feedback Score: 1 reviews	Check the timing when my KA went it would pull until higher RPM's when it would die... I too thought it was the clutch but it was my cam timing

02-18-2006, 11:49 AM	#3
akwon Join Date: Feb 2006 Location: College Park MD Posts: 40 Trader Rating: (0) Feedback Score: 0 reviews	How do I check the timing? How do I adjust the timing correctly?

02-20-2006, 09:01 PM	#4
TougeSR20Kid Zilvia Junkie Join Date: Dec 2005 Location: Seattle WA Age: 38 Posts: 452 Trader Rating: (1) Feedback Score: 1 reviews	unfortuneately the only way to check cam timing is to take off the valve cover set the crank to tdc and check to see if the marks on the chain and sprocket line up... the ignition timing you need to have a timing light to check it in which case your better off taking it to a shop and having them run a diagnostic cus it could be a number of things