Search found 3604 matches

by LPGC
Sun Jan 19, 2020 10:01 pm
Forum: Having Problems ?
Topic: Jumping forward and poor changeover CLS500
Replies: 13
Views: 145

Re: Jumping forward and poor changeover CLS500

Monitor the 'fuel rail pressure' and 'fuel rail relative to manifold pressure' readings during over-run, to see if the readings climb or fall dramatically. If they fall very low it will be because the car didn't originally feature a fuel return but the LPG installer fitted a physical return which is...
by LPGC
Thu Jan 16, 2020 11:43 am
Forum: Announcements, News and Services
Topic: Forum Instability
Replies: 13
Views: 891

Re: Forum Instability

That explains sporadic 'too many connections' errors I was seeing Dave..
by LPGC
Mon Jan 13, 2020 10:27 am
Forum: Find an LPG Professional
Topic: Range Rover 4.2 V8 - North west London
Replies: 1
Views: 57

Re: Range Rover 4.2 V8 - North west London

Which model RangeRover (e.g. L322 supercharged)? and what LPG/BRC parts do you have? Is there any wording on the LPG ECU besides saying BRC?
You may find that not many installers fit BRC and that having a manifold with injectors already fitted isn't much of an advantage.
by LPGC
Sun Jan 12, 2020 10:55 am
Forum: General Discussion
Topic: Getting P0172 only on LPG
Replies: 36
Views: 512

Re: Getting P0172 only on LPG

I'm not sure on whether fuel pressure rising to 72psi after you've turned the engine off is normal but I wouldn't think so. Does it run OK on petrol now? Assuming it does.. You're getting the same figures after changing the oil and filter as you were before, which seems to rule out petrol in the oil...
by LPGC
Sat Jan 11, 2020 9:19 am
Forum: General Discussion
Topic: Getting P0172 only on LPG
Replies: 36
Views: 512

Re: Getting P0172 only on LPG

Brian_H wrote:
Fri Jan 10, 2020 8:58 pm
Is it a good idea for it to be on the vacuum line that feeds the reducer though? (and potentially the map sensor as well?)
No, if that's how it's connected it should be altered to use it's own manifold fitting.
by LPGC
Fri Jan 10, 2020 7:58 pm
Forum: General Discussion
Topic: Getting P0172 only on LPG
Replies: 36
Views: 512

Re: Getting P0172 only on LPG

It was probably me asking if it had a type of lube system that pumped fluid into the injector lines... no worries because your lube system isn't that type.
by LPGC
Wed Jan 08, 2020 6:44 pm
Forum: General Discussion
Topic: Getting P0172 only on LPG
Replies: 36
Views: 512

Re: Getting P0172 only on LPG

The fact that you can read the fuel pressure in OBD live data points to your model of vehicle not having a standard fuel return fitted... You're reading normal fuel pressure when running on LPG but this doesn't necessarily mean that fuel pressure isn't climbing to very high levels when running on LP...
by LPGC
Wed Jan 08, 2020 11:16 am
Forum: General Discussion
Topic: wrote off car, plug and play for same engine model?
Replies: 19
Views: 481

Re: wrote off car, plug and play for same engine model?

When the tank is empty set the min level slider 0.2v to the left of current voltage reading. Then when you have a full tank set the max level slider about 1v to the right of current voltage reading and go for a drive uphill/downhill to see how the current voltage reading changes, may find that the 1...
by LPGC
Wed Jan 08, 2020 11:10 am
Forum: General Discussion
Topic: Getting P0172 only on LPG
Replies: 36
Views: 512

Re: Getting P0172 only on LPG

Some vehicles which look in the engine bay like they don't have a fuel return do have a fuel return (for our intents and purposes), just that the fuel return isn't fitted in the engine bay. Your OBD tool shows live data (fuel trims etc), will it also show fuel pressure? Even if high fuel pressure ca...
by LPGC
Wed Jan 08, 2020 10:15 am
Forum: Having Problems ?
Topic: 1998 Toyota Previa Misfire
Replies: 10
Views: 108

Re: 1998 Toyota Previa Misfire

Other model late 90's Toyota's have the same diagnostics port, sometimes fitted in the engine bay instead of inside the car. Not always or necessarily used with a code reader, some of the pins are probably wired directly to lambda probe signals etc. Seems to be an abbreviated pinout description in t...
by LPGC
Tue Jan 07, 2020 10:14 am
Forum: Having Problems ?
Topic: Problems with Bigas system on Audi S6 V8
Replies: 30
Views: 850

Re: Problems with Bigas system on Audi S6 V8

Figures show pressure has dropped from 1.3 bar at idle load to 1.11 bar for low / low medium engine load. Would expect pressure to drop a bit, 1.3 to 1.1 bar isn't too excessive a drop but is a bit more that I'd usually expect... There could be a couple of reasons for that but can't advise without m...
by LPGC
Mon Jan 06, 2020 6:46 pm
Forum: Find an LPG Professional
Topic: Prins assistance in Kent
Replies: 7
Views: 92

Re: Prins assistance in Kent

If it was VSI1 you could buy the (specific) interface cable, maybe a copy of Bexprins, or someone might give you a copy of Prins software with passwords etc ;-) But with VSI2 it's no good even buying the interface and software, nobody can give you a password for it because it has to be activated by ...
by LPGC
Mon Jan 06, 2020 5:13 pm
Forum: Having Problems ?
Topic: Problems with Bigas system on Audi S6 V8
Replies: 30
Views: 850

Re: Problems with Bigas system on Audi S6 V8

If balance pipe (and T) diameters look the same as feed pipe to injector diameters they probably will be, you should easily notice if the balance is thin enough not to work properly as a balance. If 2 reducers were very evenly balanced in terms of pressure versus gas drawn the system might work OK(i...
by LPGC
Mon Jan 06, 2020 4:47 pm
Forum: Having Problems ?
Topic: Problems with Bigas system on Audi S6 V8
Replies: 30
Views: 850

Re: Problems with Bigas system on Audi S6 V8

Your piping diagram doesn't show what diameter pipe (and diameter T) are between the injectors and pressure sensor. If you've got 10mm feed pipes between filters and injectors but only a 4mm pressure balance pipe the balance pipe won't flow enough to balance pressure under load conditions in case on...
by LPGC
Mon Jan 06, 2020 11:40 am
Forum: Find an LPG Professional
Topic: Prins assistance in Kent
Replies: 7
Views: 92

Re: Prins assistance in Kent

VSI2 is probably the most proprietary LPG system ever, each time an installer uses software they have to have an internet connection to Prins HQ... which rules out none dealers (including myself) from using software. Maybe I'll ask my son to crack the software lol. Dealers familiar with VSI1 are fam...
by LPGC
Mon Jan 06, 2020 9:54 am
Forum: Having Problems ?
Topic: Problems with Bigas system on Audi S6 V8
Replies: 30
Views: 850

Re: Problems with Bigas system on Audi S6 V8

The pressure sensor's readings seem fine in screenshots. Unless you've seen readings that are impossible (e.g. manifold readings giving impression of turbo boost pressure on a normally aspirated engine) or seen readings which don't make sense / fluctuate when you know manifold pressure will be const...
by LPGC
Sat Jan 04, 2020 9:06 pm
Forum: Having Problems ?
Topic: Rich Fuel Problem
Replies: 10
Views: 120

Re: Rich Fuel Problem

V8 Jag (Ford) engines have one throttle body so if the reducer vac pipe connects to the manifold near the throttle body a reducer diaphragm leak would cause richer running on both cylinders banks. First to make sure we're seeing correct info in the video - It shows OBD2 readings that aren't the best...
by LPGC
Sat Jan 04, 2020 10:49 am
Forum: Having Problems ?
Topic: Problems with Bigas system on Audi S6 V8
Replies: 30
Views: 850

Re: Problems with Bigas system on Audi S6 V8

What is the reference pressure in software set to now? Autocal on this system doesn't change the 'shape' of the map, it effectively changes every number/box in the map by the same percentage, you should still expect to have to do some manual calibration. The shape of the map (transition between numb...
by LPGC
Thu Jan 02, 2020 5:54 pm
Forum: Having Problems ?
Topic: Problems with Bigas system on Audi S6 V8
Replies: 30
Views: 850

Re: Problems with Bigas system on Audi S6 V8

As Gilbert says regards the map... But I've noticed that the ECU's reference pressure (the pressure it's expecting, which is the pressure at which it will apply zero pressure compensation) is 0.95 bar. whilst the actual pressure reading is around 1.3 bar. If you set reference pressure (software) to ...
by LPGC
Thu Jan 02, 2020 4:37 pm
Forum: Having Problems ?
Topic: 1998 Toyota Previa Misfire
Replies: 10
Views: 108

Re: 1998 Toyota Previa Misfire

Some late 90's Japs have standard looking OBD2 ports but a normal OBD2 won't work because the port is actually OBD1 or JOBD that's just been wired to use an OBD2 socket. An OBD2 scanner might work or might not.. if the misfire is constant you could use an old-skool method of finding which cylinder i...