Auto-LPG Conversion Thread

**ghosthunter** · July 15th, 2008 11:58 PM

Originally Posted by ezem

* GH
does using iridium spark plugs will make our LPG powered car run better? FC and performance wise...

I doubt if iridium spark plugs would give better FC or performance. It is a matter of matching the proper plugs for your engine's operation. Typically it seems most cars will operate well enough on ordinary plugs but some might require colder sparkplugs to prevent engine shake during idle.

Improved FC will still require proper fuel system & engine tuning. I am currently observing our Mazda3 after Auto-Xer has swapped the stock plugs with a colder set. He also tuned the LPG system as well. Hopefully this will cure the idle vibration problem without causing other problems.

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As of our "fleet" of LPG cars:
Mazda3 - idle vibration cured by lpg system tuning *speedlab and colder spark plugs as well.
City 1.3L idsi - bad idle initially caused by an overheating (due to a failed radiator fan), cured by replacing all 8 sparkplugs with a new stock sparkplug set from Honda.
Camry 2.0L (gen2) - running fine since conversion.
CRV 2.0L (gen2) - running well except for the "sinok" problem when starting from an idle stop, greenfuel with speedlab is looking for a solution.
Sentra 1.3L N16 - running fine since conversion.
Corolla 1.6L AE111 - running fine, lpg system slightly detuned to provide marginally better FC at cost of lower peak performance.
Expedition (gen1) - running well since conversion.

**ghosthunter** · July 16th, 2008 12:29 AM

Originally Posted by tanoshi

Sana nobody offered open loop in the first place, available naman clossed loop technology, retrofit all those without O2 sensors. oh well, you get what you pay for, cheap in exchange of automation comfort & efficiency.

well, even "cheap" open loop venturi mixer LPG kits can be problem free. Take my car as an example. Generally reliable & efficient as long as you maintain the air filter well cleaned.

One major advantage of "cheap" venturi-mixer systems is the owner/driver can make adjustments to the system right on the spot (if you know what you are doing). Of course, just be careful because it's easier to screw up your LPG settings than getting it running correctly.

**JohnM** · July 16th, 2008 07:08 AM

Originally Posted by paolorenzo

Yung rough idling nangyayari kapag full stop. Normal idle siya at 800rpm, then bigla bababa to 400-600, so biglang manginginig yung oto. Parang na-sinok o na-sakal ng sandali. On few occasions nga, mamamatayan ako. Bad trip lalo A/T, so I need to switch to N or P, para maka-restart. Hassle.

Baka-ibalik ko next week, just to increase the idling settings of LPG (mga +100-200 rpm). Sigurado tataas consumption, but hopefully will offset the rough idle.

Have you tried checking your ATF level? Ganto usually symptoms ng AT ko kung low na ATF.

**paolorenzo** · July 16th, 2008 07:44 AM

Originally Posted by JohnM

Have you tried checking your ATF level? Ganto usually symptoms ng AT ko kung low na ATF.

It should be ok. Kaka drain-replace lang recently. And the problem is with LPG only. Engine runs fine with gas.

*tanoshi, you're a bit too judgemental. Lahat naman yata ng conversion shops dito nagka problem at one installation or another. Yung conversion ko might be slightly problematic (idling problem), but diagnosis is ongoing. For ezem's ride naman, perfect conversion. Pati yung CEL problem, na-resolve na yata ng Denso. I think CEL problems continue to happen to other installers. While problematic ang idling ko, Mike Tagle and his crew at Denso are very accommodating. We're continuing to diagnose the problem.

As for open-loop systems, as GH said, they can be the best fit for some rides. Fitting SGI to carb engines is simply overkill. You pay twice the price, with very little added benefits (if any). It's like buying the latest Nike-LeBron pair of shoes, only to use it for walking.

**aar002** · July 16th, 2008 08:03 AM

Originally Posted by paolorenzo

Yung rough idling nangyayari kapag full stop. Normal idle siya at 800rpm, then bigla bababa to 400-600, so biglang manginginig yung oto. Parang na-sinok o na-sakal ng sandali. On few occasions nga, mamamatayan ako. Bad trip lalo A/T, so I need to switch to N or P, para maka-restart. Hassle.

Baka-ibalik ko next week, just to increase the idling settings of LPG (mga +100-200 rpm). Sigurado tataas consumption, but hopefully will offset the rough idle.

hi paolorenzo, I am really puzzled on your problem. please continue informing us on the developments. Fortunately, I do not encounter this problem. My ride is Revo 1.8 A/T, venturi type, idling is at 900rpm both in LPG and in gasoline.

**vojdiaz** · July 16th, 2008 08:31 AM

directions please to go to greenfuel in mandaluyong thanks

**1997** · July 16th, 2008 08:32 AM

Im Using Denso Closed loop LPG kit... When Im about to change from Gas to LPG I have to rev my car to 2500 RPM... Baket laging hirap sa 1st try? Pero 2nd or 3rd try ok naman... Parang napipigilan.... What could be the culprit?

**Mile2** · July 16th, 2008 09:21 AM

Originally Posted by vojdiaz

directions please to go to greenfuel in mandaluyong thanks

From Shaw Blvd, take 9 de Pebrero, then go left at the first corner to your left, you will pass a public school, R. Pascual is a small street and the corner has a store named "Casao Store", you will see a big gate written with many companies and one of them is GreenFuel.

**userfriendly** · July 16th, 2008 10:08 AM

Originally Posted by ghosthunter

I
As of our "fleet" of LPG cars:
Mazda3 - idle vibration cured by lpg system tuning *speedlab and colder spark plugs as well.
City 1.3L idsi - bad idle initially caused by an overheating (due to a failed radiator fan), cured by replacing all 8 sparkplugs with a new stock sparkplug set from Honda.
Camry 2.0L (gen2) - running fine since conversion.
CRV 2.0L (gen2) - running well except for the "sinok" problem when starting from an idle stop, greenfuel with speedlab is looking for a solution.
Sentra 1.3L N16 - running fine since conversion.
Corolla 1.6L AE111 - running fine, lpg system slightly detuned to provide marginally better FC at cost of lower peak performance.
Expedition (gen1) - running well since conversion.

Fleet nga

GH, so all your cars except the corolla were done by Greenfuel?

Is there a big difference between a kit from Italy and Turkey?

**bigMIKE** · July 16th, 2008 11:23 AM

Originally Posted by Mile2

From Shaw Blvd, take 9 de Pebrero, then go left at the first corner to your left, you will pass a public school, R. Pascual is a small street and the corner has a store named "Casao Store", you will see a big gate written with many companies and one of them is GreenFuel.

Thanks for pitching in Mile2.
Anyway if you need a map please visit our website www.greenfuel.com.ph