Over fueling or Injectors or Something else
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Re: Over fueling or Injectors or Something else
impossible
"I'd rather lose by a mile because I built my own car, than win by an inch because someone else built it for me"
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Re: Over fueling or Injectors or Something else
SonOfAnarchy ZA wrote:impossible
Thats what I said......
Is it possible that the car can sometimes overfuel and sometimes not?
Maybe the air flow meter or heat sensor gives inconsistent readings?? What is the possibility of that??
Ex: 1985 Alfa GTV 2.0
Ex: 1981 Alfa GTV 2.0
Ex: 1989 Honda Ballade 160i DOHC
Ex: 1991 Honda CRX
Ex: 1997 Honda RVF 400
Ex: 2007 Yamaha R6
Current: 1991 Nissan 200sx
Ex: 1981 Alfa GTV 2.0
Ex: 1989 Honda Ballade 160i DOHC
Ex: 1991 Honda CRX
Ex: 1997 Honda RVF 400
Ex: 2007 Yamaha R6
Current: 1991 Nissan 200sx
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Re: Over fueling or Injectors or Something else
Ja it may be worth changing your water temp and cleaning your afm
"I'd rather lose by a mile because I built my own car, than win by an inch because someone else built it for me"
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Re: Over fueling or Injectors or Something else
I did clean the AFM, but it could still be half broken... the AFR gauge in the car is not working properly, or so it seems. Someone once said it is a narrow band something something, so I assume I can swap out the probe for a wide band one??? If I can get that to work properly, then I would be able to tell when or if its running rich or not. The temp sensor, is that on the intake?SonOfAnarchy ZA wrote:Ja it may be worth changing your water temp and cleaning your afm
Here's that video again, AFR gauge not working so well
https://www.youtube.com/watch?v=NcoJxgn ... e=youtu.be
Ex: 1985 Alfa GTV 2.0
Ex: 1981 Alfa GTV 2.0
Ex: 1989 Honda Ballade 160i DOHC
Ex: 1991 Honda CRX
Ex: 1997 Honda RVF 400
Ex: 2007 Yamaha R6
Current: 1991 Nissan 200sx
Ex: 1981 Alfa GTV 2.0
Ex: 1989 Honda Ballade 160i DOHC
Ex: 1991 Honda CRX
Ex: 1997 Honda RVF 400
Ex: 2007 Yamaha R6
Current: 1991 Nissan 200sx
Re: Over fueling or Injectors or Something else
Not dripping at 6 bar? Who the hell did you take it to?
Did you get a flow test report?
Did you get a flow test report?
S13 CA18DET, NIStune and...oh wait no that's gone.....
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Re: Over fueling or Injectors or Something else
place called Cape injector centre. He phoned me yesterday, so not reports, just a phone call.Enzio wrote:Not dripping at 6 bar? Who the hell did you take it to?
Did you get a flow test report?
Ex: 1985 Alfa GTV 2.0
Ex: 1981 Alfa GTV 2.0
Ex: 1989 Honda Ballade 160i DOHC
Ex: 1991 Honda CRX
Ex: 1997 Honda RVF 400
Ex: 2007 Yamaha R6
Current: 1991 Nissan 200sx
Ex: 1981 Alfa GTV 2.0
Ex: 1989 Honda Ballade 160i DOHC
Ex: 1991 Honda CRX
Ex: 1997 Honda RVF 400
Ex: 2007 Yamaha R6
Current: 1991 Nissan 200sx
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Re: Over fueling or Injectors or Something else
A wideband consists out of a 5/6 wire probe and a controller. If you have that you can wire you current gauge to the narrow band output of the controller.
I would just get a complete setup including a proper gauge, like this:
http://www.innovatemotorsports.com/products/MTXL.php
I would just get a complete setup including a proper gauge, like this:
http://www.innovatemotorsports.com/products/MTXL.php
197rwkw ,376nm
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Re: Over fueling or Injectors or Something else
I think I know what the problem is.
A really nasty backyard hack to control boost if you don't have a proper wategate is to add a second dump valve. You don't connect it to a boost/vacuum source and just set the preload to open up at the boost you want.
I suspect they did that on your car, cause it's not connected to a boost/vacuum source and the wastegate flap is welded shut.
So your turbo is basically boosting all it can and you venting all but 0.8bar to atmo. This is probably maxing out your AFM and the chip is clamping the AFM volts to stop boost cut and guessing the final mixture.
Also...I think the inconsistent idle is caused by the crap quality dump valve that doesn't always seat properly when the piston returns, thus causing air to enter your motor without being measured by the AFM.
Hope this makes sense...lol
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A really nasty backyard hack to control boost if you don't have a proper wategate is to add a second dump valve. You don't connect it to a boost/vacuum source and just set the preload to open up at the boost you want.
I suspect they did that on your car, cause it's not connected to a boost/vacuum source and the wastegate flap is welded shut.
So your turbo is basically boosting all it can and you venting all but 0.8bar to atmo. This is probably maxing out your AFM and the chip is clamping the AFM volts to stop boost cut and guessing the final mixture.
Also...I think the inconsistent idle is caused by the crap quality dump valve that doesn't always seat properly when the piston returns, thus causing air to enter your motor without being measured by the AFM.
Hope this makes sense...lol
Sent from my LG-H815 using Tapatalk
I like all cars, I just like some more than others
'93 Nissan 200SX
Ex: '93 Nissan Sentra 160GX - SR20VE
'93 Nissan 200SX
Ex: '93 Nissan Sentra 160GX - SR20VE
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Re: Over fueling or Injectors or Something else
That kind of makes sense. I thinkNissan_Fanatic wrote:I think I know what the problem is.
A really nasty backyard hack to control boost if you don't have a proper wategate is to add a second dump valve. You don't connect it to a boost/vacuum source and just set the preload to open up at the boost you want.
I suspect they did that on your car, cause it's not connected to a boost/vacuum source and the wastegate flap is welded shut.
So your turbo is basically boosting all it can and you venting all but 0.8bar to atmo. This is probably maxing out your AFM and the chip is clamping the AFM volts to stop boost cut and guessing the final mixture.
Also...I think the inconsistent idle is caused by the crap quality dump valve that doesn't always seat properly when the piston returns, thus causing air to enter your motor without being measured by the AFM.
Hope this makes sense...lol
Sent from my LG-H815 using Tapatalk
The injectors is going back in tonight, so hope it will be running soon and then I can take it to someone that could have a look.
What will happen, if I remove the disconnected dump valve and seal the hole in the pipe?
Ex: 1985 Alfa GTV 2.0
Ex: 1981 Alfa GTV 2.0
Ex: 1989 Honda Ballade 160i DOHC
Ex: 1991 Honda CRX
Ex: 1997 Honda RVF 400
Ex: 2007 Yamaha R6
Current: 1991 Nissan 200sx
Ex: 1981 Alfa GTV 2.0
Ex: 1989 Honda Ballade 160i DOHC
Ex: 1991 Honda CRX
Ex: 1997 Honda RVF 400
Ex: 2007 Yamaha R6
Current: 1991 Nissan 200sx
- Nissan_Fanatic
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Re: Over fueling or Injectors or Something else
That is what I would suggest, but be VERY carefull...you will have NO boost control.
Do that and drive it around without going into boost and check for idle quality and fuel consumption...also a working wideband AFR gauge will be very helpful now.
You can try going into boost a little bit, but your foot will be the boost controller so be very careful and watch the boost gauge closely.
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Do that and drive it around without going into boost and check for idle quality and fuel consumption...also a working wideband AFR gauge will be very helpful now.
You can try going into boost a little bit, but your foot will be the boost controller so be very careful and watch the boost gauge closely.
Sent from my LG-H815 using Tapatalk
I like all cars, I just like some more than others
'93 Nissan 200SX
Ex: '93 Nissan Sentra 160GX - SR20VE
'93 Nissan 200SX
Ex: '93 Nissan Sentra 160GX - SR20VE
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- Slipping Clutch
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Re: Over fueling or Injectors or Something else
Ok, thanks for the advice, I think you are on the right track, or else it could be faulty AFM.Nissan_Fanatic wrote:That is what I would suggest, but be VERY carefull...you will have NO boost control.
Do that and drive it around without going into boost and check for idle quality and fuel consumption...also a working wideband AFR gauge will be very helpful now.
You can try going into boost a little bit, but your foot will be the boost controller so be very careful and watch the boost gauge closely.
Sent from my LG-H815 using Tapatalk
I agree, just a pity they are so expensive!!also a working wideband AFR gauge will be very helpful now
Will keep you posted
Ex: 1985 Alfa GTV 2.0
Ex: 1981 Alfa GTV 2.0
Ex: 1989 Honda Ballade 160i DOHC
Ex: 1991 Honda CRX
Ex: 1997 Honda RVF 400
Ex: 2007 Yamaha R6
Current: 1991 Nissan 200sx
Ex: 1981 Alfa GTV 2.0
Ex: 1989 Honda Ballade 160i DOHC
Ex: 1991 Honda CRX
Ex: 1997 Honda RVF 400
Ex: 2007 Yamaha R6
Current: 1991 Nissan 200sx
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Re: Over fueling or Injectors or Something else
I had similar problem when I got my sx and I took my car to Dynotech.
Dynotech didn't solve the issue... research and talking getting advice from sx owners that the issue was resolved.
BUMP for update.
Dynotech didn't solve the issue... research and talking getting advice from sx owners that the issue was resolved.
BUMP for update.
'91 RS13 200SX
It started as a dream
Blog: http://www.skippyphotography.co.za
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It started as a dream
Blog: http://www.skippyphotography.co.za
Facebook Page: http://www.facebook.com/skippyct
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Re: Over fueling or Injectors or Something else
yip, that's what I'm doing here. Met some really helpful people!!Skippy wrote:Dynotech didn't solve the issue... research and talking getting advice from sx owners that the issue was resolved.
I think this is spot on. Installed the injectors yesterday, waiting on the guy to fix the wiring, he is coming Wednesday evening. So will confirm the waste-gate flap story. I have disconnected the vacuum line. sucked and blow in it, no gate movement, but not sure how much pressure it needs to move??Nissan_Fanatic wrote:I think I know what the problem is.
A really nasty backyard hack to control boost if you don't have a proper wategate is to add a second dump valve. You don't connect it to a boost/vacuum source and just set the preload to open up at the boost you want.
I suspect they did that on your car, cause it's not connected to a boost/vacuum source and the wastegate flap is welded shut.
Ex: 1985 Alfa GTV 2.0
Ex: 1981 Alfa GTV 2.0
Ex: 1989 Honda Ballade 160i DOHC
Ex: 1991 Honda CRX
Ex: 1997 Honda RVF 400
Ex: 2007 Yamaha R6
Current: 1991 Nissan 200sx
Ex: 1981 Alfa GTV 2.0
Ex: 1989 Honda Ballade 160i DOHC
Ex: 1991 Honda CRX
Ex: 1997 Honda RVF 400
Ex: 2007 Yamaha R6
Current: 1991 Nissan 200sx
Re: Over fueling or Injectors or Something else
Jaco in what area do you stay in Cape town?
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Sent from my D2005 using Tapatalk
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- Slipping Clutch
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Re: Over fueling or Injectors or Something else
I stay in Bellville. Car is parked at my work in Parowtroopiec wrote:Jaco in what area do you stay in Cape town?
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Ex: 1985 Alfa GTV 2.0
Ex: 1981 Alfa GTV 2.0
Ex: 1989 Honda Ballade 160i DOHC
Ex: 1991 Honda CRX
Ex: 1997 Honda RVF 400
Ex: 2007 Yamaha R6
Current: 1991 Nissan 200sx
Ex: 1981 Alfa GTV 2.0
Ex: 1989 Honda Ballade 160i DOHC
Ex: 1991 Honda CRX
Ex: 1997 Honda RVF 400
Ex: 2007 Yamaha R6
Current: 1991 Nissan 200sx