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Author Topic: another hunting/lopey idle topic...  (Read 10160 times)

September 11, 2011, 10:23:41 am

carrizog60

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another hunting/lopey idle topic...
« on: September 11, 2011, 10:23:41 am »
hi

i just love the sound of that on diesels,and no,my passat doesent have 75hp so it moves fairly well(for the ones that will say is goofy to have that on a slow car).

i think that there is more people interested in this, from reading other topics i can see that, so lets try to talk what can be done to achieve this and still have a good working order pump(off idle).


a friend of mine had this issue and it turned out to be a malfunction delivery valve.
knowing the function of the DV what can cause idle to lope?
and what about  governor springs ?

changing the strength of the idle spring would have what benhavior?

i read on other topic(mtdi pumps related) that changing the position of the shaft where the flyweights atatch could lead to more fuel due to less intervention of the governor but also erratic idle.

if erratic idle is another word for lope or hunting idle that would be great,and if more fuel would be other effect that great...

any pump builder ou there that had messes with this setting that can scheme in and debate this?


vw golf gti G60--vw passat 1.9td gt2052v
yamaha vmax 1200- yamaha tdm 850
Portugal

Reply #1September 11, 2011, 02:32:26 pm

745 turbogreasel

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Re: another hunting/lopey idle topic...
« Reply #1 on: September 11, 2011, 02:32:26 pm »
Thicken your fuel till the idle compensation can't happen fast enough :-\

Reply #2September 11, 2011, 04:56:10 pm

carrizog60

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Re: another hunting/lopey idle topic...
« Reply #2 on: September 11, 2011, 04:56:10 pm »
but that would increase pump pressure and timing beyond safe values.

if the trick is to make the idle spring not to act fast enough would changing idle spring strength achive that?
vw golf gti G60--vw passat 1.9td gt2052v
yamaha vmax 1200- yamaha tdm 850
Portugal

Reply #3September 11, 2011, 08:36:07 pm

dankcorey22

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Re: another hunting/lopey idle topic...
« Reply #3 on: September 11, 2011, 08:36:07 pm »
Im interested in this topic also! i wanna make my pump hunt at idle, sounds soo good!
MY CARs-BLACK 99.5 Jetta TDI 5 speed 93,000- DC Stage 2 Clutch Kit 14Lb FW, Afe air intake box, 2.5" DP, 11mm IP, 2.5" stright piped, boost gauge, PP764, RC5 (WOW), 3-Bar, McNally EGT/Boost, 17/22, Race Pipe, EGR Cooler Delete, PD lift pump, R32 MAF housing,FMIC

1983 VW Jetta 1.6 turbo fuel mods

Reply #4September 12, 2011, 11:04:01 am

R.O.R-2.0

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Re: another hunting/lopey idle topic...
« Reply #4 on: September 12, 2011, 11:04:01 am »
the only reasons pumps hunt at idle, is because of a ill-adjusted governor..

the first hunting diesels were the detroits.. and you could make them idle smooth as silk if you knew how to adjust the governor buffers right..

the 16V92 that AF DICK has in there land speed racer, it has 4 super chargers, 4 sets of compound turbos... starts and idles quite smooth.

me, personally, i love that our pumps idle smooth.. take a car with hunting idle, and put it in a slow moving traffic jam.. you will want your smooth idle back in a right hurry..
92 Jetta GLI - Black, 1.6D w/ GT2056V turbo..
86 GTI - 4 Door, Med Twilight Gray, Tow Machine..
86 Audi Coupe GT - Tornado Red, All Stock.. WRECKED.
89 Toyota 4Runner - Dark Grey Metallic, LIFTED!

Turbo: exhaust gasses go into the turbocharger and spin it, witchcraft happens and you go faster.

Reply #5September 12, 2011, 01:10:28 pm

8v-of-fury

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Re: another hunting/lopey idle topic...
« Reply #5 on: September 12, 2011, 01:10:28 pm »
Yah, I like the ability to crawl along in gear at idle smoothly.

Reply #6September 12, 2011, 01:16:45 pm

R.O.R-2.0

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Re: another hunting/lopey idle topic...
« Reply #6 on: September 12, 2011, 01:16:45 pm »
i love how our engines sound stock at idle (most of us atleast)
92 Jetta GLI - Black, 1.6D w/ GT2056V turbo..
86 GTI - 4 Door, Med Twilight Gray, Tow Machine..
86 Audi Coupe GT - Tornado Red, All Stock.. WRECKED.
89 Toyota 4Runner - Dark Grey Metallic, LIFTED!

Turbo: exhaust gasses go into the turbocharger and spin it, witchcraft happens and you go faster.

Reply #7September 12, 2011, 03:55:16 pm

92EcoDiesel Jetta

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Re: another hunting/lopey idle topic...
« Reply #7 on: September 12, 2011, 03:55:16 pm »
I think leaks in the IP and elsewhere in the engine can also cause a hunting idle. I replaced all leaky seals in my IP and did a head gasket job a month ago and the idle is now nice and steady.

Reply #8September 13, 2011, 08:11:38 am

carrizog60

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Re: another hunting/lopey idle topic...
« Reply #8 on: September 13, 2011, 08:11:38 am »
i dont have the problem of cruising at idle,so there wont be any driving issue.

assuming that a malfunctioning governor what can be done to achieve that?

was hoping that more experienced on diesel pump build  freaks help a bit...
vw golf gti G60--vw passat 1.9td gt2052v
yamaha vmax 1200- yamaha tdm 850
Portugal

Reply #9September 13, 2011, 05:12:43 pm

R.O.R-2.0

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Re: another hunting/lopey idle topic...
« Reply #9 on: September 13, 2011, 05:12:43 pm »
i dont have the problem of cruising at idle,so there wont be any driving issue.

assuming that a malfunctioning governor what can be done to achieve that?

was hoping that more experienced on diesel pump build  freaks help a bit...

the pump wizards know how to set the governors right.. so there wont be a hunting idle.
92 Jetta GLI - Black, 1.6D w/ GT2056V turbo..
86 GTI - 4 Door, Med Twilight Gray, Tow Machine..
86 Audi Coupe GT - Tornado Red, All Stock.. WRECKED.
89 Toyota 4Runner - Dark Grey Metallic, LIFTED!

Turbo: exhaust gasses go into the turbocharger and spin it, witchcraft happens and you go faster.

Reply #10September 14, 2011, 12:02:21 am

8v-of-fury

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Re: another hunting/lopey idle topic...
« Reply #10 on: September 14, 2011, 12:02:21 am »
Why do you want a hunting idle exactly? To sound cool? I don't quite get it.

How do they get the Cummins to hunt? They utilize a Bosch vertilliere (sp?) pump same as we do.

Reply #11September 14, 2011, 01:07:36 am

dankcorey22

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Re: another hunting/lopey idle topic...
« Reply #11 on: September 14, 2011, 01:07:36 am »
Why do you want a hunting idle exactly? To sound cool? I don't quite get it.

How do they get the Cummins to hunt? They utilize a Bosch vertilliere (sp?) pump same as we do.

To get cummins to hunt they just put bigger injector lines them. But i think that is bad because its not getting fuel for a split second. 
MY CARs-BLACK 99.5 Jetta TDI 5 speed 93,000- DC Stage 2 Clutch Kit 14Lb FW, Afe air intake box, 2.5" DP, 11mm IP, 2.5" stright piped, boost gauge, PP764, RC5 (WOW), 3-Bar, McNally EGT/Boost, 17/22, Race Pipe, EGR Cooler Delete, PD lift pump, R32 MAF housing,FMIC

1983 VW Jetta 1.6 turbo fuel mods

Reply #12September 14, 2011, 08:06:18 am

carrizog60

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Re: another hunting/lopey idle topic...
« Reply #12 on: September 14, 2011, 08:06:18 am »
i want the idle like that because i like the sound.
the same way people like to hear the turbo on straigh pipes,or some like the WG discharge to atmosphere.

if someone know hot to set it right,is very possible to know very well how it works and then also know how to make it lope.
vw golf gti G60--vw passat 1.9td gt2052v
yamaha vmax 1200- yamaha tdm 850
Portugal

Reply #13September 14, 2011, 10:47:01 am

dankcorey22

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Re: another hunting/lopey idle topic...
« Reply #13 on: September 14, 2011, 10:47:01 am »
Agreed ^^^  I like to hear the sound also! I think it would be kinda tough to get our IDI's to lope. I wish someone who knew these pumps really good would chime in
MY CARs-BLACK 99.5 Jetta TDI 5 speed 93,000- DC Stage 2 Clutch Kit 14Lb FW, Afe air intake box, 2.5" DP, 11mm IP, 2.5" stright piped, boost gauge, PP764, RC5 (WOW), 3-Bar, McNally EGT/Boost, 17/22, Race Pipe, EGR Cooler Delete, PD lift pump, R32 MAF housing,FMIC

1983 VW Jetta 1.6 turbo fuel mods

Reply #14September 14, 2011, 12:19:08 pm

wdkingery

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Re: another hunting/lopey idle topic...
« Reply #14 on: September 14, 2011, 12:19:08 pm »
I had to do research to figure out what we are talking about, and I LIKE It. Yesss how do we get that??? I I have a late model mustang that has a pretty significant cam that does this too