No power and rough idle - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

rubbersidedown · 08-12-2004, 11:17 PM

I have a ca18det. When i take the car for a ride its an absolute dog. No power it all. I'm running it with only a downpipe. The turbo boosts to 7lbs but nothing really happens. I did a compression check and everything turned out ok. The idle is rather rough and causes the engine to shake but the idle is solid and doesn't jump around. I've tried playing with the ignition timing but it really doesn't seem to help. My boost guage reads vaccum of about 19 while idling at 900 rpm. does anyone have any ideas of what could be going on?

Bradman123 · 08-12-2004, 11:40 PM

mafs sensor or perhaps wiring. if a ca18det uses one...im guessing it does. and if its running at a steady rpm and not jumping at all then makes me wonder if its firing on all 4 cylinders.

DJ_Sunrise · 08-13-2004, 12:41 AM

run the ECU for codes, see if that turns anything up.. it can be a buncha crap, hopefully the CA puts out a code for it.. are all four of the injectors working properly??
~Sunrise

rubbersidedown · 08-13-2004, 08:56 AM

yes the injectors are working properly and the ecu isn't throwing any problem codes.

08-12-2004, 11:17 PM	#1
rubbersidedown Zilvia Junkie Join Date: Aug 2001 Posts: 343 Trader Rating: (0) Feedback Score: 0 reviews	No power and rough idle I have a ca18det. When i take the car for a ride its an absolute dog. No power it all. I'm running it with only a downpipe. The turbo boosts to 7lbs but nothing really happens. I did a compression check and everything turned out ok. The idle is rather rough and causes the engine to shake but the idle is solid and doesn't jump around. I've tried playing with the ignition timing but it really doesn't seem to help. My boost guage reads vaccum of about 19 while idling at 900 rpm. does anyone have any ideas of what could be going on? __________________ 1991 240sx coupe w/ ca18det Bone stock Purchased but not installed parts: HKS adjustable timing gears Electronic Oil Pressure Guage Apex'i Multichecker t3/t04b turbo Stainless Steel, top mount tubular manifold ARC bov 450cc injectors Spearco FMIC

08-13-2004, 08:56 AM	#4
rubbersidedown Zilvia Junkie Join Date: Aug 2001 Posts: 343 Trader Rating: (0) Feedback Score: 0 reviews	yes the injectors are working properly and the ecu isn't throwing any problem codes. __________________ 1991 240sx coupe w/ ca18det Bone stock Purchased but not installed parts: HKS adjustable timing gears Electronic Oil Pressure Guage Apex'i Multichecker t3/t04b turbo Stainless Steel, top mount tubular manifold ARC bov 450cc injectors Spearco FMIC

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08-12-2004, 11:40 PM	#2
Bradman123 Zilvia Member Join Date: Aug 2004 Location: South Dakota Posts: 187 Trader Rating: (0) Feedback Score: 0 reviews	mafs sensor or perhaps wiring. if a ca18det uses one...im guessing it does. and if its running at a steady rpm and not jumping at all then makes me wonder if its firing on all 4 cylinders.

08-13-2004, 12:41 AM	#3
DJ_Sunrise Zilvia FREAK! Join Date: Feb 2004 Location: NJ Age: 34 Posts: 1,134 Trader Rating: (1) Feedback Score: 1 reviews	run the ECU for codes, see if that turns anything up.. it can be a buncha crap, hopefully the CA puts out a code for it.. are all four of the injectors working properly?? ~Sunrise