Outside Camaro theme - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

George-CZ · 08-23-2019, 04:24 AM

My friend has Chrysler Town and Country.
Here in Europe Chrysler Grand Voyager 3.8 RT with LPG.

I don't know why, but the car always starts at the second attempt.
Coils, sparks, cables are replaced, but the problem still persists.

I have no idea why it started to cause problems.

Any idea please?

Coleroad · 08-23-2019, 08:22 AM

I would it assume it has to do with the lpg conversion kit. It starts the car on petrol , then switches LPG. I'm guessing its taking the second key turn to get it to switch to petrol. One would need to diagnose if it's a electronic or mechanical issue.

silversleeper · 08-23-2019, 10:30 AM

Some or all? of the LPG systems have a vacuum safety valve thing on them. IIRC it's built into the big round regulator. So the pressurized LPG doesn't just constantly leak out into the engine and garage. It must sense a vacuum to flow. Some of them have a push button prime to manually over ride this. I'm sure they could put an electronic solenoid to prime it for starting but likely the conversion kit doesn't bother with the added complexity and expense of that.

George-CZ · 08-23-2019, 02:06 PM

Thank you very much for ideas gentlemen's.
I admit that I'm not a very big LPG fan.
So I know practically nothing about this system.

I really appreciate any idea that would help.

radar1972 · 08-23-2019, 09:06 PM

There are many vehicles here in the US, gasoline and otherwise, that won't start on the first turn of the key. That's life.

George-CZ · 08-24-2019, 05:57 AM

Quote:

Originally Posted by radar1972

There are many vehicles here in the US, gasoline and otherwise, that won't start on the first turn of the key. That's life.

This would probably bother me too.
Even an my old Camaro with a carburetor always starts on first try.

08-23-2019, 04:24 AM	#1
George-CZ Drives: 2010 2SS LS3 and 1978 STROKER 383 Join Date: Feb 2018 Location: Czech Republic Posts: 1,592	Outside Camaro theme My friend has Chrysler Town and Country. Here in Europe Chrysler Grand Voyager 3.8 RT with LPG. I don't know why, but the car always starts at the second attempt. Coils, sparks, cables are replaced, but the problem still persists. I have no idea why it started to cause problems. Any idea please?

08-23-2019, 09:06 PM	#5
radar1972 Drives: 2012 IOM SS/RS Join Date: Sep 2017 Location: Georgia Posts: 92	There are many vehicles here in the US, gasoline and otherwise, that won't start on the first turn of the key. That's life. __________________

08-23-2019, 08:22 AM	#2
Coleroad Drives: 13 Camaro Join Date: Oct 2016 Location: Colorado Posts: 315	I would it assume it has to do with the lpg conversion kit. It starts the car on petrol , then switches LPG. I'm guessing its taking the second key turn to get it to switch to petrol. One would need to diagnose if it's a electronic or mechanical issue.

08-23-2019, 10:30 AM	#3
silversleeper Big Crow Drives: '13 ZL1 Join Date: Mar 2017 Location: California Posts: 1,486	Some or all? of the LPG systems have a vacuum safety valve thing on them. IIRC it's built into the big round regulator. So the pressurized LPG doesn't just constantly leak out into the engine and garage. It must sense a vacuum to flow. Some of them have a push button prime to manually over ride this. I'm sure they could put an electronic solenoid to prime it for starting but likely the conversion kit doesn't bother with the added complexity and expense of that.

08-23-2019, 02:06 PM	#4
George-CZ Drives: 2010 2SS LS3 and 1978 STROKER 383 Join Date: Feb 2018 Location: Czech Republic Posts: 1,592	Thank you very much for ideas gentlemen's. I admit that I'm not a very big LPG fan. So I know practically nothing about this system. I really appreciate any idea that would help.