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Re: [GMCnet] Electronic QuadraJet and factory Electronic Spark Control [message #333711 is a reply to message #333709]

Tue, 19 June 2018 16:27

lqqkatjon

Messages: 2324
Registered: October 2010
Location: St. Cloud, MN

Karma:

Senior Member

as my message kinda described, the q-jet secondaries are opened up on the lower end by linkage, but the top end opens up by vacuum. there is a vacuum diaphram that holds a linkage to keep the top plate of the secondary ports closed, until vacuum drops, then they can open up.

I have been driving my coach for about 8 years now, and It is a great system, and easy to figure out and get information on fixing stuff. 2012 I had my carb rebuilt, and now 6 years later, I probably should go through it again. It does sit idle for 5-6 months because of winter. It is tried and true, however I am now going to seriously look at EFI systems such as atomic and FI-tech, just because I want to get my fuel system better in check as Vapor lock does seem to be more common of a problem. They are starting to get to be more main stream, and tried and proven to work. The big key and from what I have observed on any system, is they all can have some odd issues, and it is nice to have the same systems on many different vehicles as usually you find someone who has had the same problem and worked through the fix before you.

I have helped many people with there gmc, and it is sure nice to be able to compare apples to apples. once in a while I will reach out to someone that has a problem, and they have some obscure modification to there coach that I have no idea what could be wrong.

Jon Roche 75 palm beach EBL EFI, manny headers, Micro Level, rebuilt most of coach now. St. Cloud, MN http://lqqkatjon.blogspot.com/

[Updated on: Tue, 19 June 2018 16:34]

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[Message index]

		Electronic QuadraJet and factory Electronic Spark Control By: GMC2000 on Tue, 19 June 2018 00:48
		Re: Electronic QuadraJet and factory Electronic Spark Control By: Chris Tyler on Tue, 19 June 2018 06:26
		Re: Electronic QuadraJet and factory Electronic Spark Control By: JohnL455 on Tue, 19 June 2018 07:22
		Re: Electronic QuadraJet and factory Electronic Spark Control By: GMC2000 on Tue, 19 June 2018 15:12
		Re: [GMCnet] Electronic QuadraJet and factory Electronic Spark Control By: James Hupy on Tue, 19 June 2018 15:58
		Re: [GMCnet] Electronic QuadraJet and factory Electronic Spark Control By: GMC2000 on Tue, 19 June 2018 16:15
		Re: [GMCnet] Electronic QuadraJet and factory Electronic Spark Control By: lqqkatjon on Tue, 19 June 2018 16:27
		Re: [GMCnet] Electronic QuadraJet and factory Electronic Spark Control By: James Hupy on Tue, 19 June 2018 16:27
		Re: Electronic QuadraJet and factory Electronic Spark Control By: lqqkatjon on Tue, 19 June 2018 16:11
		Re: Electronic QuadraJet and factory Electronic Spark Control By: GMC2000 on Tue, 19 June 2018 18:00
		Re: Electronic QuadraJet and factory Electronic Spark Control By: Matt Colie on Tue, 19 June 2018 19:03
		Re: Electronic QuadraJet and factory Electronic Spark Control By: GMC2000 on Tue, 19 June 2018 19:59
		Re: Electronic QuadraJet and factory Electronic Spark Control By: mrgmc3 on Tue, 19 June 2018 22:04
		Re: Electronic QuadraJet and factory Electronic Spark Control By: GMC2000 on Tue, 19 June 2018 22:34
		Re: Electronic QuadraJet and factory Electronic Spark Control By: jhbridges on Wed, 20 June 2018 10:44
		Re: Electronic QuadraJet and factory Electronic Spark Control By: GMC2000 on Wed, 20 June 2018 12:52
		Re: Electronic QuadraJet and factory Electronic Spark Control By: JohnL455 on Wed, 20 June 2018 20:47
		Re: Electronic QuadraJet and factory Electronic Spark Control By: GMC2000 on Thu, 21 June 2018 12:05
		Re: Electronic QuadraJet and factory Electronic Spark Control By: BoboBob13 on Sat, 30 June 2018 21:50
		Re: Electronic QuadraJet and factory Electronic Spark Control By: GMC2000 on Sat, 30 June 2018 23:03
		Re: Electronic QuadraJet and factory Electronic Spark Control By: GMC2000 on Sun, 01 July 2018 02:37
		Re: Electronic QuadraJet and factory Electronic Spark Control By: jhbridges on Sun, 01 July 2018 08:03
		Re: Electronic QuadraJet and factory Electronic Spark Control By: BoboBob13 on Sun, 01 July 2018 15:28
		Re: Electronic QuadraJet and factory Electronic Spark Control By: GMC2000 on Sun, 01 July 2018 08:36
		Re: Electronic QuadraJet and factory Electronic Spark Control By: jhbridges on Sun, 01 July 2018 09:50
		Re: [GMCnet] Electronic QuadraJet and factory Electronic Spark Control By: jimk on Sun, 01 July 2018 10:13
		Re: [GMCnet] Electronic QuadraJet and factory Electronic Spark Control By: BoboBob13 on Sun, 01 July 2018 15:18
		Re: [GMCnet] Electronic QuadraJet and factory Electronic Spark Control By: James Hupy on Sun, 01 July 2018 15:35
		Re: Electronic QuadraJet and factory Electronic Spark Control By: jhbridges on Sun, 01 July 2018 13:55
		Re: Electronic QuadraJet and factory Electronic Spark Control By: jhbridges on Sun, 01 July 2018 15:44
		Re: Electronic QuadraJet and factory Electronic Spark Control By: GMC2000 on Sun, 01 July 2018 16:21
		Re: Electronic QuadraJet and factory Electronic Spark Control By: jhbridges on Sun, 01 July 2018 19:01
		Re: [GMCnet] Electronic QuadraJet and factory Electronic Spark Control By: jimk on Sun, 01 July 2018 19:16
		Re: Electronic QuadraJet and factory Electronic Spark Control By: GMC2000 on Sun, 01 July 2018 19:14
		Re: Electronic QuadraJet and factory Electronic Spark Control By: jhbridges on Mon, 02 July 2018 07:20
		Re: Electronic QuadraJet and factory Electronic Spark Control By: GMC2000 on Tue, 03 July 2018 03:53
		Re: Electronic QuadraJet and factory Electronic Spark Control By: BoboBob13 on Tue, 03 July 2018 08:49
		Re: Electronic QuadraJet and factory Electronic Spark Control By: jhbridges on Tue, 03 July 2018 07:32
		Re: Electronic QuadraJet and factory Electronic Spark Control By: GMC2000 on Tue, 03 July 2018 10:18
		Re: Electronic QuadraJet and factory Electronic Spark Control By: jhbridges on Tue, 03 July 2018 13:29
		Re: Electronic QuadraJet and factory Electronic Spark Control By: GMC2000 on Tue, 03 July 2018 17:57
		Re: Electronic QuadraJet and factory Electronic Spark Control By: jhbridges on Tue, 03 July 2018 19:52

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