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Dutch924-racer
Joined: 23 Jul 2007 Posts: 1077 Location: The Netherlands
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Posted: Sun Jan 15, 2017 7:07 am Post subject: Making a test setup for the K-jetronic fuel system |
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I making a test setup so I can adjust/ equal the flow to the injectors.
I have a Bosch pressure gauge which I have to fit, but I have to make an adapter for it first.
I also want to add a wire to the wur so it can warm up
When pushing the meteringhead plate down, it works for a few seconds but then it stops spraying fuel, what am I doing wrong ?
_________________ 937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller |
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Fasteddie313
Joined: 29 Sep 2013 Posts: 2596 Location: MI
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Posted: Mon Jan 16, 2017 2:41 am Post subject: Re: Making a test setup for the K-jetronic fuel system |
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I could see that happening if you were just spraying off the rest of your residual pressure but I think that's unlikely since your FP is right there with wires on it..
You do have your FP running full time and your return to tank lines are constantly flowing correct? _________________ 80 Turbo - Slightly Modified |
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Dutch924-racer
Joined: 23 Jul 2007 Posts: 1077 Location: The Netherlands
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Posted: Mon Jan 16, 2017 4:10 am Post subject: |
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Fuel pump is constant running and got a return line bak into a smalltank
maybe the fuelpump is bad, have to hook up the pressure tester first _________________ 937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller |
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Dutch924-racer
Joined: 23 Jul 2007 Posts: 1077 Location: The Netherlands
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Posted: Tue Jan 24, 2017 5:51 pm Post subject: |
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hooked up the pressure gauge, the pressure drops when you put down the plate in the air flow meter.
Could this be because I don't have the accumulator in the set-up ? _________________ 937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller |
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Rasta Monsta
Joined: 12 Jul 2006 Posts: 11724 Location: PacNW
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Posted: Wed Jan 25, 2017 1:24 am Post subject: |
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Is the pump gravity fed? Accumulator shouldn't effect volume. _________________ Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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Fasteddie313
Joined: 29 Sep 2013 Posts: 2596 Location: MI
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Posted: Wed Jan 25, 2017 4:56 am Post subject: |
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I could see the accumulator helping dampen pressure spikes and dips but it should have no effect on overall flow..
You can do a FP flow test as per the manual..
Maybe it could be the system pressure regulator in your FD sticking if not the pump? The plunger thing on the side, you can take it apart and clean it but be extra very areful with the plunger and its bore so you do not scratch it even the tiniest amount, precision surfaces etc..
You say the pressure drops right? How?
Does it just dip a little bit and come right back up?
Does it drop down to a lower pressure and stay steady while the injectors run?
Does it just drop to zero 0 ?
Did this system work ok before you put it into this test setup?
Is it possible you have your main feed and tank return lines backwards? _________________ 80 Turbo - Slightly Modified |
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Dutch924-racer
Joined: 23 Jul 2007 Posts: 1077 Location: The Netherlands
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Posted: Wed Jan 25, 2017 6:22 am Post subject: |
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pump is not gravity fed, could this be a problem ?
Eddy, I have to check again to give you an answer
Is this correct ?
1- fuel pump fed
2- WÚR out
3- fuel return
4- cold start valve
5- Wur in (large hole)
6- injector 1
7- injector 2
8- injector 4
9- injector 3
_________________ 937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller
Last edited by Dutch924-racer on Wed Jan 25, 2017 6:43 am; edited 2 times in total |
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Fasteddie313
Joined: 29 Sep 2013 Posts: 2596 Location: MI
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Posted: Wed Jan 25, 2017 6:35 am Post subject: |
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_________________ 80 Turbo - Slightly Modified |
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Dutch924-racer
Joined: 23 Jul 2007 Posts: 1077 Location: The Netherlands
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Posted: Wed Jan 25, 2017 6:46 am Post subject: |
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I got the order of the injectors wrong, but thet shouldn't be a problem I assume ? _________________ 937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller |
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Carrera RSR
Joined: 08 Jan 2010 Posts: 2309 Location: Somerset, UK
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Posted: Wed Jan 25, 2017 8:09 am Post subject: |
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Dutch924-racer wrote: | I got the order of the injectors wrong, but thet shouldn't be a problem I assume ? |
Doesn't matter on a continuous injection system _________________ 1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252 |
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Rasta Monsta
Joined: 12 Jul 2006 Posts: 11724 Location: PacNW
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Posted: Wed Jan 25, 2017 12:50 pm Post subject: |
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Dutch924-racer wrote: | pump is not gravity fed, could this be a problem |
yup _________________ Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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