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LPG, CNG & LNG - General Info and Issues Share experiences and problems |
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5 cylinder on petrol... and 4 on LPGViews : 2927 Replies : 11Users Viewing This Thread : |
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Nov 28th, 2017, 13:15 | #1 |
Junior Member
Last Online: Oct 5th, 2019 11:36
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Location: Roma
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5 cylinder on petrol... and 4 on LPG
Hello everyone,
I suppose, in a few time, I'll take contacts with CNGBiFuel for a complete refurbishment of stepper motor... BUT, meanwhile, I propose all of you a new exciting issue: engine runs "on 4" when LPG feeded. In my previous attempts, I could see inside distributor a serie of slots in it's main cylinder. The slots are very very narrow and I had supposed that dirty could have clogged one of it. So, I poured a cleaner inside the main pipe (the pipe coming from evaporator, for short) and I waited. But nothing happened. Given the situation, is there inside the injectors someting that could be jammed? It sound me strange because I suppose that the "injectors" are not exactly injectors but "diffusers", since they haven't electrical devices. Do these may have a sort of non-return valve or something similar? Thank you in advance! |
Dec 4th, 2017, 10:18 | #2 |
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Last Online: Oct 5th, 2019 11:36
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... Someone home?
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Dec 4th, 2017, 22:43 | #3 |
Premier Member
Last Online: Jan 15th, 2022 11:23
Join Date: Feb 2009
Location: Salisbury (ish)
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Have you established which cylinder is affected? What state is the ignition in? Any weaknesses with ignition will be highlighted when running on gas.
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2008 XC70 3.2 SE Lux with LPG conversion - current 2005 XC70 D5 SE Lux - sold 2004 XC70 D5 SE Lux - written off by another XC70 2001 V70 D5 - sold 2000 V70 Classic 2.4 - sold |
Dec 5th, 2017, 10:25 | #4 | |
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Last Online: Oct 5th, 2019 11:36
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Quote:
No, at the moment I don't know which cylinder is the "guilty"; I didn't know that LPG is so sensitive to ignition. So I should check it before put hands on LPG devices? In case, I suppose spark plugs first, then coils? Thanks again. |
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Dec 5th, 2017, 19:24 | #5 |
Classic P80 1999 BiFuel
Last Online: Mar 6th, 2024 00:34
Join Date: Aug 2012
Location: 48mph Middle Lane M4
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And we're off..
This issue has been covered many times.
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Bifuel V70 Classic 1999 [The Old Grumpy in the Corner, "When I was a lad... blah, bl**dy blah."] |
Dec 5th, 2017, 23:18 | #6 |
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Given that it's apparently such a well-worn subject, i would have thought it would be the perfect topic for 'sticky' at the top of this section.
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2008 XC70 3.2 SE Lux with LPG conversion - current 2005 XC70 D5 SE Lux - sold 2004 XC70 D5 SE Lux - written off by another XC70 2001 V70 D5 - sold 2000 V70 Classic 2.4 - sold |
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Dec 6th, 2017, 08:38 | #7 | |
Junior Member
Last Online: Oct 5th, 2019 11:36
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Quote:
I would ask to CNG how usually is managed (shipping, exchange, etc.) his refurbishment of stepper motors: it's a long time I have problems (discussed in this forum), now the misfiring too, so I'd like to solve all them... |
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Dec 22nd, 2017, 00:03 | #8 | |
Classic P80 1999 BiFuel
Last Online: Mar 6th, 2024 00:34
Join Date: Aug 2012
Location: 48mph Middle Lane M4
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Quote:
Send you old core to me. Sorry I don't send out on spec anymore. No matter how large a deposit I take, the old cores don't come back. I owe nearly £900 to various owners around Europe in core-deposits. Which sounds very profitible, but in the end I run out of cores. So I can't send steppers. No cores, puts me out of business. Hence, £900 is no good to me, I'd much prefer to have the cores. For thsoe that wish to continue driving whilst I repair I send you a blanking plate. See my ebay offerings, buy my blanking-plate whilst I repair yours. For more detail go to eBay.
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Bifuel V70 Classic 1999 [The Old Grumpy in the Corner, "When I was a lad... blah, bl**dy blah."] Last edited by CNGBiFuel; Dec 22nd, 2017 at 00:05. |
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Dec 23rd, 2017, 18:06 | #9 |
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Last Online: Jan 15th, 2022 11:23
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Merry Christmas to you too . Much as I'd love to write it, I've got BRC and Prins conversions which don't suffer the problems of the factory fitted systems. My advice would be to rip out everything downstream of the tank and get a decent modern conversion.
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2008 XC70 3.2 SE Lux with LPG conversion - current 2005 XC70 D5 SE Lux - sold 2004 XC70 D5 SE Lux - written off by another XC70 2001 V70 D5 - sold 2000 V70 Classic 2.4 - sold |
Dec 24th, 2017, 07:56 | #10 |
Classic P80 1999 BiFuel
Last Online: Mar 6th, 2024 00:34
Join Date: Aug 2012
Location: 48mph Middle Lane M4
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Agreed. There's better systems than the factory-fit. Only it works and the issues it does have can usually be sorted for under £200. For me the whole point about running gas is to save money.
A modern system, even if you install yourself runs to £6-700 and a pro-install puts the price at £15-1600 if you're lucky. That's 15,000+ before break-even. For that price it had better be very good, and i can't see the logic. The car might not make that, or the extra 30,000 it needs to be in proper profit. Better? Perhaps, but my car is worth £700 if I'm lucky. Hence, £15-1600? I'd be an idiot to spend that if saving money is the aim. So how can it be better? Nope, £15-1600? I want two cars for that. I'm no registration-plate queen, I'll leave those with self-esteem issues to that lark. Money no-object, I wouldn't be driving my car anyway, but for the price, it's next to unbeatable. CLEANING THE DIZZY You'll not guarntee getting to the slots in the dizzy by pouring down the pipe. Soak by removing the stepper. It's a pig to get to on late models, which is why these days I recommend movilg the whole thing with longer 8mm pipe x 5. Keeps the pricey stepper from cooking too. Then you can make it a yearly job. Takes me 2-3 minutes on mine. Then let it soak for 2-3 hours.
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Bifuel V70 Classic 1999 [The Old Grumpy in the Corner, "When I was a lad... blah, bl**dy blah."] Last edited by CNGBiFuel; Dec 24th, 2017 at 08:20. |
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