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Clean injectors or replace? 

 

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Posted: Sun Feb 26, 2006 11:51 pm 
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hornet wrote:
Blu Falc.. I'm a techie, not a problem with a soldering iron.. How reliable/acurate are these kits?

I might need to go the Mega Squirt route sooner rather than later :(



They are reliable because all its doing is displaying numerically the duty cycle of your injectors. Its not something that can be unreliable.

Jaycar cat No- KC5374

Quote:
This project measures the exact fuel injection pulses from your ecu, and displays it on a pair of LED displays, it also features n onboard relay to cut in another injector or alarm. Kit supplied with PCB and all electronic components


I typed that out from the "Performance electronics for Cars" book and you should be able to find more info on the jaycar site
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Posted: Mon Feb 27, 2006 6:40 pm 
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Car must be fitted with air flow and EGO sensors (standard on all EFI systems) for full functionality.


Not sure about that bit. I got a MAP sensor not a MAF :(

Will that make a difference?

 

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Posted: Mon Feb 27, 2006 6:40 pm 
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Quote:
Car must be fitted with air flow and EGO sensors (standard on all EFI systems) for full functionality.


Not sure about that bit. I got a MAP sensor not a MAF :(

Will that make a difference?

 

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Posted: Mon Feb 27, 2006 9:04 pm 
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for the duty cycle meter? no you dont.. At least it doesnt say you do for the duty cycle of the injectors. are you sure your not refering to a mixture meter?
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Posted: Tue Feb 28, 2006 9:14 am 
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My bad.. sorry that was for the "SMART FUEL MIXTURE DISPLAY FOR FUEL INJECTED CARS", which is actually the quoted cat no: KC5374.

I'll search more for the duty cycle meter

 

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Posted: Tue Feb 28, 2006 9:18 am 
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CAT. No. KC5375

LED Duty Cycle Meter for Fuel Injected Cars
Ref: High Performance Electronics Projects for Cars - Silicon Chip Publications.
Automatically operate an extra fuel injector or fuel pump etc, when your fuel injector duty cycle reaches a preset level. It measures the exact injection pulse from your ECU, and displays it on a pair of 7 segment LED displays. It offers a super-fast sampling rate to display real time injector pulsing, and the display is mounted on a small remote PCB so it’s suitable for dash mounting. A simple duty cycle generator is included for testing. Kit supplied with PCB, and all electronic components.

Image

$54.95

http://www.jaycar.com.au/productView.as ... &SUBCATID=

 

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Posted: Tue Feb 28, 2006 6:01 pm 
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My car with a blocked fuel filter:
Image

With a new filter, but different dyno:
Image

Still a bit lean for my liking, considering it used to run at 10.5-12

 

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Posted: Tue Feb 28, 2006 6:08 pm 
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so umm how much power did u get with that cam?

no need to be shy ;)

 

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Posted: Tue Feb 28, 2006 8:45 pm 
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Stating power figures isn't worth it unless it was on the same dyno :)

 

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Posted: Tue Feb 28, 2006 10:37 pm 
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hornet wrote:
My bad.. sorry that was for the "SMART FUEL MIXTURE DISPLAY FOR FUEL INJECTED CARS", which is actually the quoted cat no: KC5374.

I'll search more for the duty cycle meter


sorry must have looked at the wrong number
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Posted: Sat Mar 04, 2006 2:23 pm 
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hornet wrote:
If anyone knows the price of a set of new ones then I'd love to know. I didn't think that fuel additive did s**t. I'm sceptical of any additive for a car, be it fuel or oil.


Additive is the technical name for snake oil.....

Got mine cleaned for $120. UNBELIEVABLE difference... Wifey had religously used injector cleaner too.

Car's done 290K - same injectors (get the hint :-) )

Bursons want $240 for CHANGEOVER units ($200 deposit). Ouch!

Get 'em cleaned by someone who gives a s**t! Mine took all day. Pulling them out was the fun part (bloody BBM)

 

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Posted: Sun Mar 05, 2006 12:12 pm 
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Thanks Shansta, I priced replacement ones from Repco, ait was was 235, for what seems to be refurbished. I'll reco mine I think.

They guy who was going to reco them for me does before and after flow testes, and will make sure they are within 1% of each other.

 

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Posted: Sun Mar 05, 2006 6:30 pm 
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Yeah my guy did that as well, he did say it took a few trips to the cleaner to get them to flow standard rates again.... My car (and the injectors) has done 290k tho!

Good luck!

 

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Posted: Sun Mar 05, 2006 7:16 pm 
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This guy has the injector cleaning machine in his workshop. Other end to the dyno ;)

 

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Posted: Sun Mar 05, 2006 7:42 pm 
Oompa Loompa
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hornet wrote:
This guy has the injector cleaning machine in his workshop. Other end to the dyno ;)


Hehe - useful little gadget that!

Get him to take them out - it's a prick of a job - my stoopid haynes manual reckons you can get the out without pulling the top of the broad-band manifold. Maybe if you reef the crap out of the fuel rail! I ended up splitting the manifold :evil:

Lucky I had the spare gasket left over from the VRS kit I used on the head..

 

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