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Author Topic: FAO: Chrisgsxr - LPG behaviour  (Read 9964 times)

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zirax

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Re: FAO: Chrisgsxr - LPG behaviour
« Reply #15 on: 12 April 2010, 21:26:00 »
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TBH it's so intermittent I'm having issues pinning it down.

Still think it's the injectors though :-/ Although mine seems to be fine with a full tank and get worse or fine when nearly empty and plays up when full (depending when it was calibrated) :-/
What if you calibrate at half full?


Shouldn't the reducer maintain a constant(ish) pressure (within its capabilities) despite tank pressure?

Thing is, the Vap pressure isn't dropping noticeably when the problem occurs :-/

Hmmm, just popping my head in to say I have an interest in this. My 2.6 has a similar issue when on WOT going past 5k rpm.
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feeutfo

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Re: FAO: Chrisgsxr - LPG behaviour
« Reply #16 on: 13 April 2010, 00:03:43 »
fine today, did 44 miles on a full tank, and its as LD wittnessed on Saturday, ie slight tiny issue, when lifting off, the box then selects a higher gear and slight drag on the gear change, if it stayed like that i'd be happy enough.(edit to add, if the throttle is kept pinned to the floor its perfect, but your really doing silly speeds then, shhhh ::))

Trying to decide if gear changes generally are not as smooth as on petrol, dont get me wrong, its far better than on 1.2 bar, being picky really and slightly paranoid if i have a box issue. I keep switching back to petrol to check the gear changes are ok, then back to gas again once assured. As said though its all improving with each tweek.  :y

Having said that, i do expect it to run perfectly eventually, its def possible as Entwoods conversion prooves. His injectors look far more..."serious" than ours.


« Last Edit: 13 April 2010, 00:11:01 by chrisgixer »
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Lazydocker

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Re: FAO: Chrisgsxr - LPG behaviour
« Reply #17 on: 13 April 2010, 20:36:02 »
Still working on it Chris... Can't get mine to behave as well as yours though :'( :'(
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feeutfo

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Re: FAO: Chrisgsxr - LPG behaviour
« Reply #18 on: 13 April 2010, 21:18:16 »
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Still working on it Chris... Can't get mine to behave as well as yours though :'( :'(
I know you are LD, much appreciated.  :y

Will be interested to see what TB makes of his when he starts poking it....

+18% long term fuel trim wouldnt make amy odds would it?, elm showed some live data last week.
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Re: FAO: Chrisgsxr - LPG behaviour
« Reply #19 on: 13 April 2010, 21:27:25 »
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Still working on it Chris... Can't get mine to behave as well as yours though :'( :'(
I know you are LD, much appreciated.  :y

Will be interested to see what TB makes of his when he starts poking it....

+18% long term fuel trim wouldnt make amy odds would it?, elm showed some live data last week.
Mine is being treated as if its in cotton wool until the oil issue can be tested/confirmed/resolved.

I even resisted the temptation when a BMW decided to be a typical BMW driver at a roundabout....
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Kevin Wood

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Re: FAO: Chrisgsxr - LPG behaviour
« Reply #20 on: 13 April 2010, 21:46:11 »
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Still working on it Chris... Can't get mine to behave as well as yours though :'( :'(
I know you are LD, much appreciated.  :y

Will be interested to see what TB makes of his when he starts poking it....

+18% long term fuel trim wouldnt make amy odds would it?, elm showed some live data last week.

That's quite a lot of fuel trim. I think the EML comes on at about 20. Is that on both banks? :-?

Sounds like the LPG map is a little lean. I wonder if that's a clue? :-/

Kevin
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Lazydocker

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Re: FAO: Chrisgsxr - LPG behaviour
« Reply #21 on: 13 April 2010, 21:55:07 »
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Still working on it Chris... Can't get mine to behave as well as yours though :'( :'(
I know you are LD, much appreciated.  :y

Will be interested to see what TB makes of his when he starts poking it....

+18% long term fuel trim wouldnt make amy odds would it?, elm showed some live data last week.

That's quite a lot of fuel trim. I think the EML comes on at about 20. Is that on both banks? :-?

Sounds like the LPG map is a little lean. I wonder if that's a clue? :-/

Kevin

LPG Map appears OK... But it's all relative I suppose
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Kevin Wood

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Re: FAO: Chrisgsxr - LPG behaviour
« Reply #22 on: 13 April 2010, 22:04:52 »
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LPG Map appears OK... But it's all relative I suppose

Yep. It will need a bit of running around on petrol to get rid of the fuel trim before it's evident - or clear the codes, which resets the fuel trims on the DBW cars, then run around on petrol collecting another petrol curve, then check the LPG map against that.

Kevin
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Re: FAO: Chrisgsxr - LPG behaviour
« Reply #23 on: 13 April 2010, 22:05:53 »
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LPG Map appears OK... But it's all relative I suppose

Yep. It will need a bit of running around on petrol to get rid of the fuel trim before it's evident - or clear the codes, which resets the fuel trims on the DBW cars, then run around on petrol collecting another petrol curve, then check the LPG map against that.

Kevin

Looks like Chris needs to pop down to yours then ::) ::)
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TheBoy

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Re: FAO: Chrisgsxr - LPG behaviour
« Reply #24 on: 13 April 2010, 22:07:40 »
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LPG Map appears OK... But it's all relative I suppose

Yep. It will need a bit of running around on petrol to get rid of the fuel trim before it's evident - or clear the codes, which resets the fuel trims on the DBW cars, then run around on petrol collecting another petrol curve, then check the LPG map against that.

Kevin

Looks like Chris needs to pop down to yours then ::) ::)
I can feel a rear bush party mini meet in Four Marks coming on ;D
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Lazydocker

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Re: FAO: Chrisgsxr - LPG behaviour
« Reply #25 on: 13 April 2010, 22:08:59 »
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LPG Map appears OK... But it's all relative I suppose

Yep. It will need a bit of running around on petrol to get rid of the fuel trim before it's evident - or clear the codes, which resets the fuel trims on the DBW cars, then run around on petrol collecting another petrol curve, then check the LPG map against that.

Kevin

Looks like Chris needs to pop down to yours then ::) ::)
I can feel a rear bush party mini meet in Four Marks coming on ;D

Do you all wanna come up here? ::) ::) ;D ;D
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Kevin Wood

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Re: FAO: Chrisgsxr - LPG behaviour
« Reply #26 on: 13 April 2010, 23:14:12 »
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LPG Map appears OK... But it's all relative I suppose

Yep. It will need a bit of running around on petrol to get rid of the fuel trim before it's evident - or clear the codes, which resets the fuel trims on the DBW cars, then run around on petrol collecting another petrol curve, then check the LPG map against that.

Kevin

Looks like Chris needs to pop down to yours then ::) ::)

Might save the existing map before it gets played with... just in case.

Kevin
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feeutfo

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Re: FAO: Chrisgsxr - LPG behaviour
« Reply #27 on: 13 April 2010, 23:24:43 »
cutnpaste from elm thread, so was written with code reading in mind, not lpg, but gives more info than i remember...





nope, no good, "support for this cable has been withdrawn for forign copies...too costly...visit scantool.net and buy a genuine one you tight git" or something like, keeps popping up.

it connected to read a certain ammount of live date but blatantly refused to read any codes, 0430 def present.....is 57 degrees intake temp. to high if the car ouside temp is reporting 16°? engine temp showed 87 ish and was still warm from drive home? fuel trims showing short term +10% long term almost +18%, iirc it was +1/2% at worst last i looked, pre cat O2 +O.8 both banks at worst at tick over.

cat code cleared with snap on reader available by coincidence from neighbour. Live date similar.

fink maf is on the way out perhaps? it has been suspected for some rough starts in hot weather as well.

Any thoughts?
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feeutfo

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Re: FAO: Chrisgsxr - LPG behaviour
« Reply #28 on: 14 April 2010, 00:57:07 »
it also switched back today, full throttle and simultanious sport mode from 70 set the bleeper off.

on the way home a rare chance for full throttle run into top gear from a stand still revaled faultless gear changes
no problem at all, couldn't fault it. But lift and it changes early and lags a fraction still, as it would.
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feeutfo

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Re: FAO: Chrisgsxr - LPG behaviour
« Reply #29 on: 14 April 2010, 01:08:21 »
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Still working on it Chris... Can't get mine to behave as well as yours though :'( :'(
I know you are LD, much appreciated.  :y

Will be interested to see what TB makes of his when he starts poking it....

+18% long term fuel trim wouldnt make amy odds would it?, elm showed some live data last week.
Mine is being treated as if its in cotton wool until the oil issue can be tested/confirmed/resolved.

I even resisted the temptation when a BMW decided to be a typical BMW driver at a roundabout....
oh now we cant have this, just not on, MAAARK, THIS GETTING SERIOUS....
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