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AAZ Injection Timing Issues
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Topic: AAZ Injection Timing Issues (Read 3704 times)
Reply #15
March 09, 2020, 10:24:16 pm
matrick
Newbie
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8
Re: AAZ Injection Timing Issues
«
Reply #15 on:
March 09, 2020, 10:24:16 pm »
I've probably read this reply a dozen times and just processed that you do it without using a dial gauge. How exactly do you do it then?
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Reply #16
March 10, 2020, 12:45:52 am
fatmobile
Veteran
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2733
Re: AAZ Injection Timing Issues
«
Reply #16 on:
March 10, 2020, 12:45:52 am »
I time it by ear.
On the edge of clackity.
Make a mark.
Move it and see.
Then move it again.
It couldn't hurt for you to advance it.
If you don't like it move it back.
I also have a pulse detector,.. so I can use a timing light and set it to 12 BTDC.
According to Andrew your pump has the RPM advance too.
So pulling it all the way doesn't just indicate sounds changes during timing advance.
He's more familiar with the 1.9 stuff.
Get clear fuel lines first.
To and from the pump.
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Tornado red, '91 Golf 4 door,
with a re-ringed, '84 quantum, turbo diesel, MD block
Reply #17
October 26, 2020, 04:20:22 pm
lovevws
Newbie
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12
Re: AAZ Injection Timing Issues
«
Reply #17 on:
October 26, 2020, 04:20:22 pm »
Try adjusting the fuel mixture too, 12 mm wrench and long screw driver flat. That seems to smooth it out sometimes and raise or lower rpms a bit.
Once warmed up, it should idle and run with cold start pushed in set at .82 mm.
Mine did.
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Reply #18
October 26, 2020, 05:34:25 pm
libbydiesel
Global Moderator
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3416
Re: AAZ Injection Timing Issues
«
Reply #18 on:
October 26, 2020, 05:34:25 pm »
There is no 'mixture' adjustment on a diesel. That is gasser thinking and does not apply to unthrottled diesels. They always ingest as much air as they can. Increasing the fuel will raise the rpms.
«
Last Edit: October 26, 2020, 05:40:31 pm by libbydiesel
»
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Reply #19
October 26, 2020, 10:21:54 pm
lovevws
Newbie
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12
Re: AAZ Injection Timing Issues
«
Reply #19 on:
October 26, 2020, 10:21:54 pm »
Thats what I meant, the screw that feeds more fuel. of course not air... I know its wide open on a diesel, So fuel mixture is maybe wrong term but you get the idea.
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Reply #20
October 26, 2020, 10:54:06 pm
libbydiesel
Global Moderator
Veteran
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3416
Re: AAZ Injection Timing Issues
«
Reply #20 on:
October 26, 2020, 10:54:06 pm »
I assume you are talking about the max fuel screw. That screw changes the scale of the entire fuel map and so affects both idle and the top of the pedal. If the goal is to change the idle speed, then that is the wrong screw to use. If the goal is to change the amount of fuel at a fully floored pedal then it is the correct screw to adjust and then idle needs to be adjusted afterward using the idle screw.
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VWDiesel.net The IDI, TDI, and mTDI source.
»
Engine Specific Info and Questions
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IDI Engine
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malone
,
burn_your_money
,
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,
theman53
) »
AAZ Injection Timing Issues