Banshee
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- Joined
- Jul 24, 2012
- Messages
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Alex save that to your phone or whatever you may need it, I may need it, Rick
I'd pay good money to watch him do that without you Rick :lol
Alex save that to your phone or whatever you may need it, I may need it, Rick
I'd pay good money to watch him do that without you Rick :lol
I'd pay good money to watch him do that without you Rick :lol
[FONT=Calibri, Verdana, Helvetica, Arial]Been giving some thought as to why SVO appears to induce a number one injector NLS fault code....
There are two types of number one injector needle lift sensors fitted, Zexel and Bosch. The Zexel part has a piezo crystal type and the Bosch has an inductive coil sensor.
Both of these perform the same basic function, to provide an electric pulse to inform the ECU that number one injector pintle has actually opened.
In both of these injector types the mechanical action that generates this pulse is hydraulically coupled to the piezo or coil sensor.
Now, if the hydraulic medium is not diesel, but somewhat more viscous veggie oil, I believe this process could possibly be compromised giving rise to a number one injector NLS fault code.
I would also expect the dynamic response of the two sensor types to be somewhat different, which may go someway to explaining why some engines are happy on relatively high levels of SVO/WVO and others not.
So a question for SVO users is do you have a Bosch or Zexel setup?[/FONT]
Rustic.....Spot on, best yet. Good job Alex is thick skinned.:lol :lol :lol
Here's a little more of the theory/speculation.....
if you move a ferrous lump through a coil quickly, then viewed on an oscilloscope you will see a pulse with a good amplitude and fast rise time.
Conversely, if you move the same mass more slowly you will observe a much lower amplitude and slower rise time.
An effect I guess that could be induced by things moving far less quickly or damped in a more viscous fuel.....
.... Says the guy who smashed his roof lamp lens yesterday :doh
And I bet you only tried to wash it in the dish washer:lol:lol:lol
Interesting and very plausible hypothesis there Ray... Now, how do I work out which pump I have?:bow[FONT=Calibri, Verdana, Helvetica, Arial]Been giving some thought as to why SVO appears to induce a number one injector NLS fault code....
There are two types of number one injector needle lift sensors fitted, Zexel and Bosch. The Zexel part has a piezo crystal type and the Bosch has an inductive coil sensor.
Both of these perform the same basic function, to provide an electric pulse to inform the ECU that number one injector pintle has actually opened.
In both of these injector types the mechanical action that generates this pulse is hydraulically coupled to the piezo or coil sensor.
Now, if the hydraulic medium is not diesel, but somewhat more viscous veggie oil, I believe this process could possibly be compromised giving rise to a number one injector NLS fault code.
I would also expect the dynamic response of the two sensor types to be somewhat different, which may go someway to explaining why some engines are happy on relatively high levels of SVO/WVO and others not.
So a question for SVO users is do you have a Bosch or Zexel setup?[/FONT]
I believe it should be as simple as:Interesting and very plausible hypothesis there Ray... Now, how do I work out which pump I have?:bow
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