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carb bog problem- edelbrock- 360

Posted By: 74360SRT

carb bog problem- edelbrock- 360 - 03/09/12 05:08 AM

I've got an edelbrock avs carb on a basically stock 360 (only cam, carb and exhaust) in a 74 challenger automatic. The car sat for a about a year and now runs rough and bogs when secondaries open and the fuel filter is filled completely with gas and looks like its about to pop. Also i believe it is running rich the exhaust has a strong smell and burns your eyes.

The car was parked because it overheated pretty bad and blew a head gasket or cracked something i just recently noticed a little water in the oil, and it's blowing smoke out of the pcv which i been told is some burned up rings. I plan to rebuild it or get a new short block or whatever i can find for cheap enough...

Ok now before all that the car ran great. Do you all think this may be caused by the overheating? Or is this from sitting and gas gumming up?

Sorry for the log post but I'd just like to get the carb right before i start rebuilding everything else.

thanks
Posted By: ScottSmith_Harms

Re: carb bog problem- edelbrock- 360 - 03/09/12 05:26 AM

Honestly? It sounds like you need to get everything else right before you mess with the carb!
Posted By: 79powerwagon

Re: carb bog problem- edelbrock- 360 - 03/09/12 11:36 AM

Quote:

Honestly? It sounds like you need to get everything else right before you mess with the carb!





Be honest- what did you do that caused the "sudden over-heating"?
Posted By: 74360SRT

Re: carb bog problem- edelbrock- 360 - 03/09/12 08:03 PM

I picked the car up from the shop it had been sitting at for that year, and the radiator had drained. I was just happy to finally get the car back so i didn't check it first... anyway i would like to get the carb right so when i do put together another engine it's ready to go. I think I'll just soak it in a bucket of gas and see if something loosens up
Posted By: p d'ro

Re: carb bog problem- edelbrock- 360 - 03/09/12 08:22 PM

Rebuild it. Run little wires thru all channels and clean/regasket. New fuel filter. Drain tank and clean tank/lines if it sat with old gas for a year, as you may gum it up again.
Posted By: JohnRR

Re: carb bog problem- edelbrock- 360 - 03/09/12 11:35 PM

Quote:

Drain tank and clean tank/lines if it sat with old gas for a year, as you may gum it up again.



this , the current gas has a shelf life about as long as whole milk , what you have in the tank may well be glorified parts cleaner at this point .

But as said you have other issues , the carb is the least of them.
Posted By: GO_Fish

Re: carb bog problem- edelbrock- 360 - 03/10/12 02:00 AM

Slow down, you may be jumping to conclusions. Your short block may be fine, and just in need of a new head gasket. Unless you have deep pockets, don't just replace whole motors for relatively minor problems. Smoke puffing out the breather can just be a head gasket that ruptured beneath the intake manifold... this will suck oil in on the intake stroke (blue smoke out the exhaust) and pressurize the crankcase on the compression stroke (blowing smoke out the breather or oil fill on the valve cover). Sounds/looks like "puff, puff, puff" like a locomotive when this happens. Oil in the coolant further confirms a head gasket failure. Your rings and short block (and heads) may be fine. And I agree, the carb would be one of the later things you are concerned with right now.
Posted By: 74360SRT

Re: carb bog problem- edelbrock- 360 - 03/10/12 02:29 AM

Ok thanks for the advice everyone. i hope it's just the head gaskets. and I'll rebuild the carb. I was just trying to see if overheating can cause a change in the carb.
Posted By: GO_Fish

Re: carb bog problem- edelbrock- 360 - 03/10/12 02:41 AM

Overheating will not likely hurt the carb, but stale gas can cause a crusty tan scale buildup inside the carb, and be hard to ignite compared to fresh gas. Very stale gas has a nasty smell to it, you won't confuse it with fresh gas smell.
Posted By: 74360SRT

Re: carb bog problem- edelbrock- 360 - 03/10/12 02:58 AM

Yeah i know the smell haha, the tank that used to be on it had some nasty sludge in it. It's got a semi-new tank and lines on it. I'm sure it just got gummed up from sitting.. It's just a daunting looking task, I've never tackled rebuilding a carb so I'm afraid of loosing some little spring or something... Was just hoping I could soak it and be done with it... Anyways thanks for the help y'all
Posted By: roe

Re: carb bog problem- edelbrock- 360 - 03/10/12 03:15 AM

Quote:

Yeah i know the smell haha, the tank that used to be on it had some nasty sludge in it. It's got a semi-new tank and lines on it. I'm sure it just got gummed up from sitting.. It's just a daunting looking task, I've never tackled rebuilding a carb so I'm afraid of loosing some little spring or something... Was just hoping I could soak it and be done with it... Anyways thanks for the help y'all



If you're just looking for experience with rebuilding, just grab a rebuild kit, read over the instructions before you start, then have at it. I have done two rebuilds, and they're pretty easy and straight foward. When I did mine I picked up a big can of carb cleaner to soak parts in, a couple of cans of carb cleaner spray, and went to town. I disassembled the carb and let all of the metal parts soak overnight, then scrubbed everything, sprayed out and cleaned out all the passages I could, then re-assembled. My second rebuild was better than my first, and I think my next one will be better still. But its nice to add another skill to my bank.

roe
Posted By: GO_Fish

Re: carb bog problem- edelbrock- 360 - 03/10/12 03:30 AM

My opinion, , the AVS (Carter and eddy versions) are an easier style to rebuild for a beginner than the Holley versions. Fewer gaskets = fewer leaks. Just a matter of minutes until the Holley fans attack!

Both styles have small springs, check balls, clips... lay a sheet down inside a medium size cardboard box when you begin to disassemble, will help contain any small parts that try to get away. Take pics of your carb before you begin and as you go. Read up a lot on your carb, YouTube, etc before you begin so you have an idea what to expect. Not terribly hard.
Posted By: RapidRobert

Re: carb bog problem- edelbrock- 360 - 03/10/12 02:31 PM

Take notes and pics & best would be get someone to show you what to do the first time. There are caveats w em
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