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saber_32au
Fordmods Newbie
Age:26
Posts: 3
Joined: 13 Jul 2007
Location: Melbourne VIC, Australia
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 Posted: Fri Jul 13, 2007 1:59 am Post subject: |
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hey there, i own a XF (which is of course on LPG) and was wondering if the same procedure MacGyver outlined in the first post can be used to tune a older system? Here is a pic of the converter:
Thanks for your help. |
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Walker
Technical Contributor
Age:36
Posts: 8577
Joined: 05 Nov 2004
Location: Melbourne VIC, Australia
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| Posted: Fri Jul 13, 2007 2:25 pm Post subject: |
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Very similar mate, but you also need to get the power valve set right as i explained in a previous post.
The Landi isn't a bad setup on a stock 4.1, but you wouldn't fit it to anything bigger. |
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saber_32au
Fordmods Newbie
Age:26
Posts: 3
Joined: 13 Jul 2007
Location: Melbourne VIC, Australia
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| Posted: Mon Jul 16, 2007 1:59 pm Post subject: |
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thanks for the reply, I was just wondering how do I clean out the converter? Do I just take off the 4 screws on the front plate (labeled "landi" on the above pic) and clean out all of the crap in there? Do I have to drain the cooling system first? Do I need a new gasket for the front plate?
Thanks |
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saber_32au
Fordmods Newbie
Age:26
Posts: 3
Joined: 13 Jul 2007
Location: Melbourne VIC, Australia
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| Posted: Tue Jul 17, 2007 9:35 pm Post subject: |
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| anybody??? |
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relaxed_diplomacy
Fordmods - Getting Side Ways
Age:33
Posts: 446
Joined: 14 Dec 2007
Location: delegate NSW, Australia
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| Posted: Wed Mar 19, 2008 9:30 pm Post subject: |
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I recently rebuilt my OMVL converter with a kit. I have tried the suggested method for tuning it and have some questions.
I disconnected the ISC, but don't think my XG has throttle stops in which to place a feeler guage? I don't understand the feeler guage bit. I also disconnected power to the LPG stepper valve.
I screwed the 10mm bolt out 6 turns and the 8mm bolt all the way in. The car ran on this but only just. I screwed the 10mm bolt further out but it slowly got worse, so i screwed it in and found the sweet spot at around 4 turns out. I kept screwing it in till the motor was only just running. I then screwed out the 8mm bolt until it ran nice and idled at the same speed to what it does on petrol.
But it falls flat at around 3500rpm heavy throttle. My guess is it is leaning out, but i don't know. What should i do? I am cautious to experiment because i don't want to create an explosion. My previous motor's timing chain skipped after my first (admittedly bodgy) attempt at tuning the LPG and i don't know at this stage whether the LPG played a role. So i'm damn cautious! |
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relaxed_diplomacy
Fordmods - Getting Side Ways
Age:33
Posts: 446
Joined: 14 Dec 2007
Location: delegate NSW, Australia
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| Posted: Sat Mar 22, 2008 10:07 am Post subject: |
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When i rev the motor up at stand still and it gets to around 3500-4000rpm the revs actually drop off and the motor runs rough. I disconnected the stepper valve and there was no difference.
This suggests to me the problem is the stepper valve isn't operating. If it is not operating perhaps that is because 1. it has a problem 2. the HEGA has a problem 3. the wiring between the HEGA and stepper valve has a problem 4. the LPG ecu has a problem.
Any thoughts would be appreciated. |
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Smokey...Retired!
Fordmods - Smokin em up
Age:22
Posts: 295
Joined: 10 Nov 2004
Location: bathurst NSW, Australia
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| Posted: Sun Apr 27, 2008 5:15 pm Post subject: |
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| I just did a gas conversion and had the same problem. Although the car i took the system out of had no stepper, just a screw, but the wiring was there. SO I thought why not & i have added the stepper motor & just took the car for a run & it has no guts after nearly 3000rpm. Going to take it out now & just put the screw in. SEe how it goes |
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Smokey...Retired!
Fordmods - Smokin em up
Age:22
Posts: 295
Joined: 10 Nov 2004
Location: bathurst NSW, Australia
View User Gallery (14)
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| Posted: Sun Apr 27, 2008 9:30 pm Post subject: |
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| All good without the stepper motor! So im guessing its a faulty stepper motor or aeg lpg ecu... |
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