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Carb is acting goofy
Posted by: Charlie Kelly ()
Date: November 27, 2018 06:50PM

So my drivers side carb is behaving pretty odd. Here's some context, I knew I had to the let car sit for a while so I poured some fuel stabilizer into a jug and shook it upeye popping smiley. It was definitely overkill but I didn't think much of it. I ran the corvair down the street and the drivers side carb gives out, as in I'm running on 3 cylinders.

I get it back home and let it sit for a whole 3 weeks and go to start it up. Now it starts fone, idles pretty rough and drives pretty weird. Here are my observations:

Fast idles okay
Normal idle causes it to stall after several seconds
10-20% throttle and it coughs, sputters hut eventually kicks on and I've got all 6
30-40% throttle it coughs endlessly
50%^ it stalls completely.

Had anyone experienced regular old fuel stabilizer freeing up junk in the tank and sending it through? I'm pretty sure it's not ancleaner. Besides the fact I run a bottle of marvel through my tank once every couple of months and this hasn't happened before.

The passenger carb is running 100% fine.

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Re: Carb is acting goofy
Posted by: MattNall ()
Date: November 27, 2018 07:23PM

Make it easy on yourself... pull it and dismantle and blow it out with compressed air.





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Carb is acting goofy
Posted by: Charlie Kelly ()
Date: November 27, 2018 07:46PM

Well I have a spare I can slap on but I guess I really have no choice. I keep hoping that it's just running bad because the gas is so diluted but then the passenger carb would be as well.

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Re: Carb is acting goofy
Posted by: MattNall ()
Date: November 27, 2018 07:54PM

You hit it on the head!





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Carb is acting goofy
Date: November 28, 2018 06:59AM

Before doing anything else, you might try the "old school" carb passage cleaning technique. Run the engine up to about 2500 RPM and clamp your hand over the offending carburetor. If you can, keep the engine running by removing your hand from the carburetor before the engine stalls. You can do this repeatedly, and if the problem is that fuel stabilizer has clogged some of the passages, this may clean them out. You will find out when you remove your hand from the carb and the engine picks up the remaining three cylinders.

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Re: Carb is acting goofy
Posted by: Charlie Kelly ()
Date: November 28, 2018 09:29AM

I'll give it a shot, thanks.

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Re: Carb is acting goofy
Posted by: Charlie Kelly ()
Date: November 29, 2018 11:50AM

Here's an update, I stuck my hand over the carb and revved it good. At some point the vaccum picked up and actually ducked the moisture right out my hand. It's currently idling all by itself. I'm afraid that the blockage might return if I attempt to drive it though so I'm going to rebuild regardless.

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Re: Carb is acting goofy
Posted by: MattNall ()
Date: November 29, 2018 11:58AM

STOP!! Add HEET! Isopropyl Alcohol... water dispersant...works every time





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Carb is acting goofy
Posted by: Charlie Kelly ()
Date: November 29, 2018 12:35PM

You mean pour some isopropyl alcohol into the float bowl? I let it idle for about an hour and shut it off. What I meant about moisture is that there was a ring of ashy skin about the size of the air horn on my palm.

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Re: Carb is acting goofy
Posted by: MattNall ()
Date: November 29, 2018 01:13PM

Gas tank... and drive it





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Carb is acting goofy
Posted by: Charlie Kelly ()
Date: November 29, 2018 01:59PM

Wow I never knew about HEET. that stuff seems mighty useful.

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Re: Carb is acting goofy
Posted by: jjohnsonjo ()
Date: November 29, 2018 02:12PM

Charlie Kelly Wrote:
-------------------------------------------------------
> Wow I never knew about HEET. that stuff seems
> mighty useful.


X2 For many many years if you live in the northeast.

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa

Image and video hosting by TinyPic



Edited 1 time(s). Last edit at 11/29/2018 02:19PM by MattNall.

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Re: Carb is acting goofy
Posted by: 66vairman ()
Date: November 29, 2018 05:01PM

Heet - mostly alchohol and it works great to absorb water in the tank.

Back in the early 70's during the first oil embargo gas stations were regularly pumping the tanks down until they ran out of gas in the MidWest. Back then gas station tanks were not environmentally safe or double lined and most had some water in the bottom. Getting some water in your fuel became the norm as station tanks were constantly low due to the fuel shortage.

Almost every day at least one of our company cars would not start due to water in the lines. The car(s) had to towed to a heated garage to get them running. The gas station folks recommended we add HEET to each fill up to keep the cars on the road, especially during cold weather. Worked fine - no problems.

Decades later when they started blending alcohol in the gasoline and everyone was predicting the sky would fall - I just recalled how much HEET alcohol additive we used in the company cars without any fuel system issues.

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Re: Carb is acting goofy
Posted by: joelsplace ()
Date: November 29, 2018 05:37PM

Heet would add a tiny percentage of alcohol to the fuel since I doubt you were adding 1 gallon to 9 gallons of fuel.

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Re: Carb is acting goofy
Posted by: jjohnsonjo ()
Date: November 29, 2018 06:11PM

Its what I use for water/meth injection, the stuff goes for dirt cheap around here every spring.



Its 99% meth, the rest helps it mix with distilled water, iso type is isopropyl.

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa

Image and video hosting by TinyPic

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Re: Carb is acting goofy
Date: November 30, 2018 07:38AM

I'm glad the palm action worked on your car. Now that the car is idling as it should, why not drive it and see if drivabiliity has returned also. Remember the old adage: "if it ain't broken, don't fix it".

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Re: Carb is acting goofy
Posted by: viewmaster ()
Date: November 30, 2018 09:57AM

BorondaFarmRacing Wrote:
-------------------------------------------------------
> I'm glad the palm action worked on your car. Now
> that the car is idling as it should, why not drive
> it and see if drivabiliity has returned also.
> Remember the old adage: "if it ain't broken, don't
> fix it".

X2!!

-m



Mike
'65 '500' Sedan 110 PG
'65 Monza Sedan turbo'd 110 SU conversion
Fresno, CA

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Re: Carb is acting goofy
Posted by: Charlie Kelly ()
Date: November 30, 2018 02:08PM

I'll give it a drive at some point. Believe it or not but I have it running open manifolds, I need to get some pipes pronto.

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Re: Carb is acting goofy
Posted by: Charlie Kelly ()
Date: December 02, 2018 09:37AM

Alright fellers, the palm trick didn't stick unfortunately. While I was disassembling I found the vacuum advance port popped its plug on the drivers side. Even after replugging it it still wouldn't idle and was choppy in the throttle.


Does anyone have any advice for getting the mounting nut at the base of the carb? I cant get a wrench in there and i dont want to round it off with a socket.



Edited 1 time(s). Last edit at 12/02/2018 09:37AM by Charlie Kelly.

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Re: Carb is acting goofy
Posted by: MattNall ()
Date: December 02, 2018 10:46AM

1/4" drive short 12 pt. Universal.... works fine..

Remember nuts are only Super Snug.... not super tight..





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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