special Propane mixer, help needed - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Terrick down Under · 04-18-2018, 08:08 AM

G'day all. I have a 93 7.4 auto that runs duel fuel. Propane and pump gas. Down here the pump gas is expensive so I run the propane and have been very happy with it for the last 400000+ kilometres.
BUT, over the last month it has developed a couple of faults. Namely a flat spot just of idle and bogging down around 4000RPM, I have replaced the surrounding components except the mixer and the stepper motor. The only place I have found one of these mixers is the UK, and they have just emailed me to say they don't carry them anymore. I can't find any model or manufactures details on it anywhere.
My question is....does anyone in the USA know where I can get one of these.

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TIA.

mingoman · 04-20-2018, 07:10 PM

Terrick,
Does it run on both gas and propane at the same time? Is that a factory setup?
Let me see what I can find.

mingoman · 04-20-2018, 07:15 PM

https://m.ebay.com/itm/IMPCO-COMPLET...-/170912700009

This guy also sells components and has a number you can call. Maybe he can get what you're looking for. Good luck!

Terrick down Under · 04-21-2018, 12:41 AM

M, thanks for that I will chase him up.

Terrick down Under · 04-21-2018, 12:50 AM

M, it starts on pumpgas for 3 seconds then changes to propane. The factory TBI is still as per original under the mixer (lpg carburetor). I run propane all the time till the 140 litre was tanks are empty and then while running on pumpgas i go to the next propane station. Which is part of the gas station.

04-18-2018, 08:08 AM	#1
Terrick down Under Registered User Join Date: May 2013 Location: Royalla, NSW, Australia Posts: 184	special Propane mixer, help needed G'day all. I have a 93 7.4 auto that runs duel fuel. Propane and pump gas. Down here the pump gas is expensive so I run the propane and have been very happy with it for the last 400000+ kilometres. BUT, over the last month it has developed a couple of faults. Namely a flat spot just of idle and bogging down around 4000RPM, I have replaced the surrounding components except the mixer and the stepper motor. The only place I have found one of these mixers is the UK, and they have just emailed me to say they don't carry them anymore. I can't find any model or manufactures details on it anywhere. My question is....does anyone in the USA know where I can get one of these. TIA.

04-20-2018, 07:10 PM	#2
mingoman Registered User Join Date: May 2004 Location: Miss Co Arkansas Posts: 679	Re: special Propane mixer, help needed Terrick, Does it run on both gas and propane at the same time? Is that a factory setup? Let me see what I can find. __________________ 76/77/78 Cheyenne 1997 K3500 454 soon to be 496

04-20-2018, 07:15 PM	#3
mingoman Registered User Join Date: May 2004 Location: Miss Co Arkansas Posts: 679	Re: special Propane mixer, help needed https://m.ebay.com/itm/IMPCO-COMPLET...-/170912700009 This guy also sells components and has a number you can call. Maybe he can get what you're looking for. Good luck! __________________ 76/77/78 Cheyenne 1997 K3500 454 soon to be 496

04-21-2018, 12:41 AM	#4
Terrick down Under Registered User Join Date: May 2013 Location: Royalla, NSW, Australia Posts: 184	Re: special Propane mixer, help needed M, thanks for that I will chase him up.

04-21-2018, 12:50 AM	#5
Terrick down Under Registered User Join Date: May 2013 Location: Royalla, NSW, Australia Posts: 184	Re: special Propane mixer, help needed M, it starts on pumpgas for 3 seconds then changes to propane. The factory TBI is still as per original under the mixer (lpg carburetor). I run propane all the time till the 140 litre was tanks are empty and then while running on pumpgas i go to the next propane station. Which is part of the gas station.



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