Trouble Shooting

Discuss topics related to the CA18DE and CA18DET series engines.
89'ClubK's
Posts: 244
Joined: Fri Mar 17, 2006 7:26 pm
Car: 89' Nissan 240SX

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My car has been running like crap as of late. It barely idles, and when I press the gas, it sputters and dies. I believe it is over-loading, as I smell alot of gas. I'm using a Z32 MAF, Walbro pump, and recently replaced the ignitor. I've also tried many different settings w/ the SAFC, but to no good results. My wiring is also being gone through to insure no lose connections.Question???? what is the stock fuel pressure? injector Ohm? and correct timing?-----------Any help is greatly appriciated! -------- Thanks!


ccasey645
Posts: 116
Joined: Sun Jul 09, 2006 6:06 pm
Car: 1989 240sx ca18det swap

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is your ecu calibrated for the different maf?

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c-rad
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Car: 1991 Nissan 240SX w/CA18DET
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ccasey645 wrote:is your ecu calibrated for the different maf?
He mentioned using a SAFC.

Chris859
Posts: 407
Joined: Mon Aug 07, 2006 10:09 pm
Location: Pinetop, Az

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IIRC static fuel pressure should be 36psi(someone correct me if im wrong)

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c-rad
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Chris859 wrote:IIRC static fuel pressure should be 36psi(someone correct me if im wrong)
With the vacuum line disconnected from the FPR and plugged, fuel pressure at idle should be 43.5 psi (3 bar).

Stock injectors are 2 ohms. Stock timing is 15* BTDC.

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float_6969
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c-rad wrote:With the vacuum line disconnected from the FPR and plugged, fuel pressure at idle should be 43.5 psi (3 bar)....
Not true. It's 36psi...

89'ClubK's
Posts: 244
Joined: Fri Mar 17, 2006 7:26 pm
Car: 89' Nissan 240SX

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Thanks for all the replys and info!----couple more ?'s if no one minds-----I'll be upgrading to DSM 450cc injectors soon, what is the Ohm for them?While using the SAFC II, I've tried setting the car at 5in/5out, 2in/5out, and so on... What works for any of you? Thanks!

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c-rad
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float_6969 wrote:Not true. It's 36psi...
I stand corrected.

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c-rad
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89’ClubK’s wrote:Thanks for all the replys and info!----couple more ?'s if no one minds-----I'll be upgrading to DSM 450cc injectors soon, what is the Ohm for them?
DSM injectors are 2 ohms as well.

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rico05
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Car: 1992 RMS13 w/ CA18DET
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OH SHAT!! I read the FSM wrong! This may in fact be my problem.....I see 38psi when I have the vac line hooked up to the FPR at idle! Nismo FPR it is then!!!!

89'ClubK's
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Car: 89' Nissan 240SX

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Thanks! so I should diffently undue the vac line to the FPR.Best of luck Rico05, the Nismo FPR is a great upgrade.

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c-rad
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89’ClubK’s wrote:Thanks! so I should diffently undue the vac line to the FPR.Best of luck Rico05, the Nismo FPR is a great upgrade.
You just unhook the vac line to set the initial pressure. When you hook it back up, the pressure will drop.

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rico05
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89’ClubK’s wrote:Thanks! so I should diffently undue the vac line to the FPR.Best of luck Rico05, the Nismo FPR is a great upgrade.
The best part is I bought a Nismo FPR about a year ago, measured my pressure, and thought that I didn't need the FPR, so I sold it. LOL.


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