Rpm's go down slow on my 240sx twin cam ka? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

sidedrifts13 · 12-13-2009, 03:51 PM

I have a 91 240sx with a stock twin cam, the problem is that when i rev the motor the rpm's come down slow what can be the problem? also idles high but not all the time almost at 2 rpm then comes down to its normal idle but most of the time it iddles high? thanks for your help.

jorge1190 · 12-13-2009, 04:43 PM

Im pretty sure that this is due to the KA having a really heavy flywheel. My KA does it too

sidedrifts13 · 12-13-2009, 05:39 PM

It does it on and off comes and goes but idle is high ima check the timing and the tps to see whats up also sometimes not all the time car dies when coming to a stop anybody have an idea what can it be? could it be bad ground?

Quote:

Originally Posted by jorge1190

Im pretty sure that this is due to the KA having a really heavy flywheel. My KA does it too

payne219 · 12-13-2009, 05:43 PM

Vacuum leak most likely If your car is falling out at stops and has high idle. Check your hoses in and around the intake manifold brake booster ect... see if you can find a leak. that might help

sidedrifts13 · 12-13-2009, 05:54 PM

for sure ill definately check the vacumm lines thanks

Quote:

Originally Posted by payne219

Vacuum leak most likely If your car is falling out at stops and has high idle. Check your hoses in and around the intake manifold brake booster ect... see if you can find a leak. that might help

evmal613 · 12-13-2009, 10:43 PM

i say vacumm. I had the same issue with my car

D-CYPHERED · 02-02-2010, 09:44 PM

damn you didnt tell me all this about the car

12-13-2009, 03:51 PM	#1
sidedrifts13 Nissanaholic! Join Date: Jul 2006 Location: LOS ANGELES Age: 41 Posts: 1,883 Trader Rating: (29) Feedback Score: 29 reviews	Rpm's go down slow on my 240sx twin cam ka? I have a 91 240sx with a stock twin cam, the problem is that when i rev the motor the rpm's come down slow what can be the problem? also idles high but not all the time almost at 2 rpm then comes down to its normal idle but most of the time it iddles high? thanks for your help. Last edited by sidedrifts13; 12-13-2009 at 05:40 PM..

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12-13-2009, 04:43 PM	#2
jorge1190 Zilvia Junkie Join Date: Mar 2008 Location: Culpeper, Va Age: 34 Posts: 593 Trader Rating: (12) Feedback Score: 12 reviews	Im pretty sure that this is due to the KA having a really heavy flywheel. My KA does it too

12-13-2009, 05:43 PM	#4
payne219 Zilvia Junkie Join Date: May 2008 Location: A-Pine drft Age: 36 Posts: 359 Trader Rating: (6) Feedback Score: 6 reviews	Vacuum leak most likely If your car is falling out at stops and has high idle. Check your hoses in and around the intake manifold brake booster ect... see if you can find a leak. that might help

12-13-2009, 10:43 PM	#6
evmal613 Zilvia Member Join Date: Jun 2009 Location: Valencia [661] Age: 34 Posts: 165 Trader Rating: (0) Feedback Score: 0 reviews	i say vacumm. I had the same issue with my car

02-02-2010, 09:44 PM	#7
D-CYPHERED Join Date: Jan 2010 Location: Southern Cali Age: 34 Posts: 15 Trader Rating: (0) Feedback Score: 0 reviews	damn you didnt tell me all this about the car