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 Post subject: A day in the life...
PostPosted: Wed Nov 16, 2016 5:55 pm 
Installer

Joined: Wed Sep 29, 2010 5:01 pm
Posts: 2943
Location: Yorkshire
Just converted a Nissan Elgrand http://www.lpgforum.co.uk/viewtopic.php?f=27&t=14190

A fair bit of work this week coming from only one customer. For this guy I've in the past converted his souped up Chrysler 300C SRT8 with 6.1 Hemi, souped up Jeep SRT8 with 6.1 Hemi (both with over 400bhp!) and sorted LPG issues on his Ford Mustang that he bought already LPG converted. The Mustang wouldn't run properly on LPG before I sorted it partly due to the installer not fitting a fuel return system. Think I've sorted LPG issues on one or two other LPG vehicles for him too. For his Christmas present to his brother he paid me to make a 'gift card' entitling his brother to an LPG service :lol:. Neither brother local to me but this one is really into his cars and reckons he likes to find the right man for the job for anything concerning his cars. A clued up guy, IT specialist and knows how to cut through BS in any field, knows a thing or two about cars and is prepared to do whatever it takes to get something to the performance and spec that he wants, thinks nothing of nipping out to Detroit just to look at car parts (maybe buy while he's there) so doesn't hesitate to drive to me for LPG work!

This week for the same guy I've: Serviced the BRC system on his 'normal' 4L straight 6 Jeep and identified a duff lambda sensor (even though it was supposedly changed 3 weeks ago elsewhere) / removed the LPG components from the engine bay of his Mustang so that the top man on Mustangs in the UK (so I'm told and I'm sure he got that right), who races Mustangs, is happy to work on the Mustang engine. He is having a different manifold and different cams fitted to the engine, the result of which will be a bit more engine power (another 80bhp or so) and an engine note similar apparently to hotrods of the 1960's partly due to the firing order of the engine being changed. The manifold will keep with his 'shaker' hood/intake, he definitely likes the shaker! I suggested if he wanted more power he could have a supercharger fitted... 'Hmm' he says, 'But that would mean me losing the shaker... hang on tho they do a super-shaker, hmm... you've set me thinking' :lol:. After the Mustang specialist has done his work he will be returning to me for the LPG system to be refitted, remapped and possibly upgraded. It definitely needs a new diagphram in the reducer anyway, the rear seat has already been removed (roll cage fitted) and I'll be fitting a secind tank in place of the back seat / Serviced the LPG system on the Jeep SRT8 that I converted for him several years ago and has never had a problem.

A couple of other customers ths week too, a guy coming a fair distance for a problem with his Prins system sorting tomorrow and it servicing.

I didn't take pics of all the above mentioned vehicles when I've had them in for conversion, never used to bother, but I took engine pics of the Jeep SRT8 and Mustang (below) when they were here the back end of last week and this week.

Mustang currently

Image

Jeep SRT8

Image

Simon

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 Post subject: Re: A day in the life...
PostPosted: Thu Nov 17, 2016 1:19 pm 
Installer

Joined: Wed Sep 29, 2010 5:01 pm
Posts: 2943
Location: Yorkshire
LPGC wrote:
A couple of other customers this week too, a guy coming a fair distance for a problem with his Prins system sorting tomorrow and it servicing.

In ref above post it is now tomorrow.. I'd forgotten the vehicle coming with the Prins issue was a Lexus RX300 :lol: ('edit' below explains the laugh). Just sorted that, link to a thread on what was done below the pic. Losing count now, is that 6 or 7 Lexus RX300's I've seen since June.. Converted 2 myself in that time, sorted the hybrid model that was never going to run right the way it was set up, sorted issues on a couple of installs fitted at that big firm in Wales that does em cheap in a day and leaves em to attempt to calibrate themselves, and sorted/serviced LPG systems on a couple of others.

Image

http://www.lpgforum.co.uk/viewtopic.php?f=27&t=14192

Edit: Laugh above due to relevance to this thread http://www.lpgforum.co.uk/viewtopic.php?f=28&t=14184

Simon

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Servicing / Diagnostics / Repairs to all systems / DIY conversion kits supplied with thorough tech support
Mid Yorkshire
2 miles A1, 8 miles M62,
http://www.Lpgc.co.uk
Twitter https://twitter.com/AutogasSimon
07816237240


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 Post subject: Re: A day in the life...
PostPosted: Thu Nov 17, 2016 6:58 pm 
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Joined: Sun Jul 07, 2013 9:25 am
Posts: 11
That was mine, Ran a dream all the way home no engine lights oodles of power still. Thanks, I knew my arm would get in that pic.

Thanks for sorting and being communicative about what you were doing all the time, makes a refreshing change, most want you to sit in a box whilst they mess about with your pride and joy.

Thanks once again.

Richard.


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 Post subject: Re: A day in the life...
PostPosted: Thu Nov 17, 2016 7:48 pm 
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Location: Yorkshire
Bulldoggy wrote:
That was mine, Ran a dream all the way home no engine lights oodles of power still. Thanks, I knew my arm would get in that pic.

Thanks for sorting and being communicative about what you were doing all the time, makes a refreshing change, most want you to sit in a box whilst they mess about with your pride and joy.

Thanks once again.

Richard.


Cheers Richard! Yes I didn't know you were going to stick your arm in when I took the pic but it added to the overall effect :lol:

After you'd gone I forgot that I'd taken a screen-shot of the Prins software while you were driving while I was calibrating - I lost the screenshot when I rebooted the laptop back into Windows10 after running the Prins software in W7 but had intended on posting it here.

It was a bit of a bugga that W7 wanted to update when I first booted it, with hindsight I could have changed the filter during the few mins it took saving a few mins I suppose, still hardly a long job.

When you said you were going to 'give me a bit of feedback' I didn't know if you meant on this or Lexus forum, had forgotten you came across me on this forum. To prevent potential for others misinterpretation of that last sentence I'd better say neither of us that way inclined :lol:

Simon

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Servicing / Diagnostics / Repairs to all systems / DIY conversion kits supplied with thorough tech support
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http://www.Lpgc.co.uk
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07816237240


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 Post subject: Re: A day in the life...
PostPosted: Mon Nov 28, 2016 4:38 pm 
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Joined: Wed Sep 29, 2010 5:01 pm
Posts: 2943
Location: Yorkshire
The other day a Freelander was brought in (on the back of a recovery truck) by an accident recovery/repairs specialist. It had been in a very slight accident (dint to the tailgate) weeks earlier, the firm had fixed the dint but the lady owner later complained to the firm that since the accident the vehicle had not run properly on LPG - she reckoned pre-accident it drove great on LPG but since the accident it cut out on deceleration and didn't drive properly. Before I even saw the car I told the firm I doubted the little knock to the rear door would have effected the LPG system...

System fitted by Leeds LPG about a year ago with LPGTech ECU, Stag reducer and V30 injectors, no lube system. The car didn't cut out during my test drive but fuel trims were at near full negative especially at idle and on over-run. There was lots of engine hesitation when blipping the throttle, I knew this would be due partly to the long pipe runs, partly due to the rich map and partly due to the installer not properly addressing 'extra injection' (which the K series engines are pretty famed for among decent LPG instrallers).

I immediately re-sited the injectors, bit of a tight squeeze but easy enough to site them a lot lower in the curved part of the manifold below the couple of breather pipes, then I set about re-calibrating the system. At this point I noticed that the installers had at least gone with 'standard' (manual) calibration rather than the LPGTech ECU's 'Tech mode' (automatic calibration) but they'd still made a bit of a mess of it, the map shape not even looking right. Also, they hadn't even enabled the LPGTech ECU's extra injection filtering (which is in a pretty obscure part of the software on this system). Not to worry about the latter point because extra injection filtering doesn't even seem to work on LPGTech systems...

The results of the changes I made are fuel trims are at least correct with the system calibrated properly and it won't cut out on deceleration now, the hesitation issue is much improved but there is still some hesitation there - and there always will be due to the type of ECU fitted. I could of course sort it but I doubt the owner would want to pay for a change in ECU, pressure sensor, switch and wiring loom, and there is no way the accident/recovery firm will pay for that either. I expect she'll have been back to the installer a few times with the cutting out and hesitation issues and got fed up of them going through the motions but it running no differently - The accident may have been an opportunity to 'pass the book' to the accident recovery/repair firm, but they have my report.

The reducer still shifts about easily at just the touch of a finger :roll:

Picture below is before I shifted the injectors lower, they are now sited in the bit of a void between the manifold and the block for much shorter pipe runs.

Image

Simon

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Full time LPG installer
Servicing / Diagnostics / Repairs to all systems / DIY conversion kits supplied with thorough tech support
Mid Yorkshire
2 miles A1, 8 miles M62,
http://www.Lpgc.co.uk
Twitter https://twitter.com/AutogasSimon
07816237240


Last edited by LPGC on Sun Dec 11, 2016 10:19 am, edited 1 time in total.

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 Post subject: Re: A day in the life...
PostPosted: Mon Nov 28, 2016 5:29 pm 
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Joined: Wed Sep 29, 2010 5:01 pm
Posts: 2943
Location: Yorkshire
Owner will be picking this BMW728 up shortly, I just converted it, mostly over the weekend.
http://www.lpgforum.co.uk/viewtopic.php?f=27&t=14197
After putting the engine covers etc back, check to make sure changeover was smooth and calibration/temp corrections were right this morning I thought I'd have a bit of time to change the valve body on the autobox on my GrandVoyager and/or do a bit of tidying up, but I was called out by the owner of a Jag about 10 miles away. He reckoned it was losing water when running on LPG, he hadn't checked if it did the same running on petrol.

Image

I found it was fitted with a Piro system, no valve lube, and it did lose water when running on petrol just as much as running on gas. The expansion tank cap was in a state, he reckoned he'd fitted a new one but the new one soon broke too (this was the new one) - If you take the cap off only the outer plastic bit comes off because he'd tried to glue the innards of the new (but broken) cap into place! It wasn't holding any pressure, squeeze the rad top pipe and water just came out of the pressure relief valve. Turns out that after he'd bought it he found it seemed like someone had drilled a little hole through the old cap - it often lost water like that but not as bad as with the new cap fitted, and then he said he'd tried to prevent it losing water by modifying the new cap :roll:. Seems a pretty obvious case of having been sold a lemon with HG issues and then grasping at straws in desperate attempts to try to fix it.

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Servicing / Diagnostics / Repairs to all systems / DIY conversion kits supplied with thorough tech support
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2 miles A1, 8 miles M62,
http://www.Lpgc.co.uk
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07816237240


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 Post subject: Re: A day in the life...
PostPosted: Sun Dec 11, 2016 1:45 pm 
Installer

Joined: Wed Sep 29, 2010 5:01 pm
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Location: Yorkshire
Sorted an Elgrand out the other day (pic below). The owner said it ran OK on gas but there was a constant misfire on petrol. He'd had it to a normal garage (not an LPG installer) who had identified the misfire was on cylinder 6 but other than that they couldn't ascertain what was causing the misfire, so after they'd fitted new plugs and done a bit of poking around with the wiring the owner decided to bring it to me. Before I even opened the bonnet I told the owner 'Most likely there'll be a problem with a green wire inside a sheath that has a red band around it. Worst case scenario is this wire is broken/disconnected underneath the inlet manifold where it connects to number 6 petrol injector, best case scenario there's a break in this wire in an accessible place, other than that it could be an internal ECU fault because when you're running on petrol the ECU is supposed to internally connect this wire to a green wire with a black stripe'. On opening the bonnet could clearly see where the garage had been probing the green wire I referred to, so top marks to the garage for getting that far (although TinleyTech might have advised them about the green wire as it was them who pointed him to me). The owner said 'I can see you know what you're doing, we'll just head into Pontefract for a bit then while you sort it'. They'd only been gone a few minutes when I ascertained the break in the wire wasn't under the manifold, because physically connecting the green to the green with black stripe cured the misfire, so it wasn't going to be a manifold off job. Further checks also pointed to the fault being ECU internal so I put the wiring back to normal and fitted a new ECU and now again the engine ran on properly on all cylinders on petrol confirming the original ECU was at fault. Set about calibrating the new ECU, it immediately ran well on LPG but I noted a couple of abnormalities - an intermittent bank trim issue was evident when running on either fuel and it wasn't easy to calibrate using the compare pinj method because while running on petrol the pinj figures quite often reverted to showing only 0.3ms duration (intermittent incorrect pinj readings on screen but only when running on petrol). ECU voltage etc read correct so I put the intermittent pinj readings down to either the installer connecting ignition live to a less than entirely appropriate ignition live or an aspect of fitting this type of ECU on a 6 cylinder motor, but anyway this wouldn't prevent the system working properly it would just make calibration a bit more difficult for me. I ascertained that the intermittent bank trim issue was due to a driver side cylinder bank failing precat lambda probe and managed to calibrate the system properly regardless, so the vehicle runs on LPG at least as well as it did with the old ECU and calibration is correct, the vehicle also now runs properly on petrol too and another positive outcome is that the owner is now aware about the lambda probe issue. 'Will that be why the MOT station reckoned emissions were high then?' he asked. 'Yes the dodgy lambda probe could easily cause that'. All very simple stuff. Don't reckon much to how and where the installer fitted components such as the reducer (too high really) and lube bottle (bit dangly on that long thin mecanno type stuff).

Image

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Servicing / Diagnostics / Repairs to all systems / DIY conversion kits supplied with thorough tech support
Mid Yorkshire
2 miles A1, 8 miles M62,
http://www.Lpgc.co.uk
Twitter https://twitter.com/AutogasSimon
07816237240


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 Post subject: Re: A day in the life...
PostPosted: Fri Dec 23, 2016 8:29 pm 
Installer

Joined: Wed Sep 29, 2010 5:01 pm
Posts: 2943
Location: Yorkshire
Bit of a run on the Nissans lately, especially models with the 3.5V6 !

Recently converted an Elgrand E50 3.5V6 http://www.lpgforum.co.uk/viewtopic.php?f=27&t=14190

Then a Nissan Skyline 3.5 V6 http://www.lpgforum.co.uk/viewtopic.php?f=27&t=14199

Then a Nissan Elgrand E51 3.5V6 http://www.lpgforum.co.uk/viewtopic.php?f=27&t=14190

Simon

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Full time LPG installer
Servicing / Diagnostics / Repairs to all systems / DIY conversion kits supplied with thorough tech support
Mid Yorkshire
2 miles A1, 8 miles M62,
http://www.Lpgc.co.uk
Twitter https://twitter.com/AutogasSimon
07816237240


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 Post subject: Re: A day in the life...
PostPosted: Thu Jan 05, 2017 6:25 pm 
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Joined: Wed Sep 29, 2010 5:01 pm
Posts: 2943
Location: Yorkshire
Just converted yet another Elgrand, added as another post on the same thread as the Elgrand above (so same last as E51 link above).

Got another Elgrand (or maybe two..) coming in for fettling tomorrow (one from Aberdeen), plus a Jeep and a Porsche Cayenne both that I converted in around 2009 coming in for service (no problems ever with those vehicles, just a service), on Saturday the Mustang shaker is coming back in for LPG refitting after having a hot rod cam and firing order changed at a Mustang specialists, got a Cadillac Escalade coming in for conversion on Monday, a Subaru 2.5 turbo Forester to convert the week after, lots of repairs to vehicles converted elsewhere during that time too.

Simon

_________________
Full time LPG installer
Servicing / Diagnostics / Repairs to all systems / DIY conversion kits supplied with thorough tech support
Mid Yorkshire
2 miles A1, 8 miles M62,
http://www.Lpgc.co.uk
Twitter https://twitter.com/AutogasSimon
07816237240


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