Anyone Using 4.1 Straight Six Engine? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**aerotruk63** · 11-17-2014, 03:56 PM

You have a vacuum leak. Some say to use an unlit propane torch, allow the gas to flow and the motor should rev when your near the source of the leak. Is the carb sufficiently secured?

hotrod66 · 11-17-2014, 06:24 PM

i did the same thing to my truck used a 1985 250 with a early head i did well for a long time drove it every day for 4 years

11-17-2014, 03:56 PM	#1
aerotruk63 Check The Champ, Demonstrator Join Date: Jun 2009 Location: Montreal,Quebec Posts: 6,627	Re: Anyone Using 4.1 Straight Six Engine? You have a vacuum leak. Some say to use an unlit propane torch, allow the gas to flow and the motor should rev when your near the source of the leak. Is the carb sufficiently secured? __________________ 1963 *Chevrolet Truck* Literature LINK: https://picasaweb.google.com/113840717762774560215 YouTube Channel with 20+ Original *Chevrolet Truck* Salesmen, Mechanics & Service Department Training Slideshows. https://www.youtube.com/results?sear...otruk63&page=1

11-17-2014, 06:24 PM	#2
hotrod66 Registered User Join Date: Jun 2008 Location: space station delta farce (justin tx) Posts: 594	Re: Anyone Using 4.1 Straight Six Engine? i did the same thing to my truck used a 1985 250 with a early head i did well for a long time drove it every day for 4 years __________________ Between saying and doing many a pair of shoes are worn out



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