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| | | | Joined: Jul 2003 Posts: 179 Member | | Member Joined: Jul 2003 Posts: 179 | What is the proper way to adjust an Edelbrock 600 performer? I just cant get this bugger to run like it should....seems like it's always running rich.
And I know it's me not the carb :-)
- Ryan
59 Apache Step
78 El Camino
http://www.wsu.edu/~rsain
| | | | | Joined: Jan 2001 Posts: 687 Shop Shark | | Shop Shark Joined: Jan 2001 Posts: 687 | Ryan,
What engine do you have this carb on? You may have to change the metering rods and/or jets to get the optimum performance.
Then again you may only need to make simple adjustments to the idle mixture screws and play with the timing or change the spark plug gap.
Let us know a little more about the engine.
-ftyler | | | | | Joined: Jul 2003 Posts: 179 Member | | Member Joined: Jul 2003 Posts: 179 | This is on a Chev 350 bored .030 over. Running 9.5:1 compression, Performer intake, plugs are gapped at factory specs (I can't remember if that is .035 or .040).
I'm thinking the problem is with the adjustment screws - but could be wrong (obviously).
I'm getting some yellowing on my air cleaner - and can smell fuel regularly when idling at a stop. Still get's decent mileage on the highway (18-23mpg - gotta love those tall gears :-).
- Ryan
59 Apache Step
78 El Camino
http://www.wsu.edu/~rsain
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#2063 10/03/2003 11:12 PM | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | The adjustment screws are only for idle mixture. You have a problem with power enrichment or accerator pump and metering rods.
Paint & Body Shop moderator
A lone amateur built the Ark. A large group of professionals built the Titanic. | | |
#2064 10/03/2003 11:52 PM | Joined: Mar 2001 Posts: 259 Member | | Member Joined: Mar 2001 Posts: 259 | I connect my vacuum gauge and adjust the mixture screws. I turn them in and the rpm's drop as well as the vacuum reading. Then I adjust them out slowly until I get the highest vacuum. Then I do the same thing to the other mixture screw.
Joe
| | | | | Joined: Jul 2003 Posts: 179 Member | | Member Joined: Jul 2003 Posts: 179 | Thanks for the ideas - I'll give that a shot...
- Ryan
59 Apache Step
78 El Camino
http://www.wsu.edu/~rsain
| | | | | Joined: Oct 2001 Posts: 428 Shop Shark | | Shop Shark Joined: Oct 2001 Posts: 428 | I have the same setup on my engine, 600 cfm Edelbrock 4 barrel performer, Edelbrock performer intake and 350 bored 40 over. Same problem with adjustment, always too rich and strong gas smell when idling after stopping. No matter how much I have tried adjusting it, I always get the same results, mileage sucks at around 13 mpg. I am not the greatest mechanic around, should I take it to a reputable shop to have it checked out or just learn to live with it? The truck runs great otherwise but could this cause damage to the engine if it isn't corrected? | | | | | Joined: Feb 2001 Posts: 1,897 Member | | Member Joined: Feb 2001 Posts: 1,897 | It sounds like the float level may be set too high. The engine takes all the extra fuel when it is running at speed but the level of fuel in the float bolw rises at idle, when the engine does not use as much. If the float level is too high, it will or could allow fuel to spill over and cause the strong fuel smell. Over time it can also put too much fuel into the engine at idle and if there is too much fuel, it can wash the oil off the rings, causing excessive wear at start-up.
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| | | | | Joined: May 2003 Posts: 68 Member | | Member Joined: May 2003 Posts: 68 | I agree with mechainiac about the float level. Also, the problem with "learning to live with it" is that excess fuel will continually wash the residual oil from your cylinder walls, resulting in premature wear.
Heavy metal worker--up to 4-inch plate.... If you can't cut it, burn it!
| | | | | Joined: May 2003 Posts: 68 Member | | Member Joined: May 2003 Posts: 68 | I agree with mechainiac about the float level. Also, the problem with "learning to live with it" is that excess fuel will continually wash the residual oil from your cylinder walls, resulting in premature wear.
Heavy metal worker--up to 4-inch plate.... If you can't cut it, burn it!
| | | | | Joined: May 2003 Posts: 68 Member | | Member Joined: May 2003 Posts: 68 | Just wanted to add that if everything else is in proper adjustment except mixture, I always started rich, then hooked up a tachometer. Slowly lean out mixture until rpm's just begin to drop (25 to 50 rpm is good). That typically will run very well.
Heavy metal worker--up to 4-inch plate.... If you can't cut it, burn it!
| | | | | Joined: Oct 2003 Posts: 70 Member | | Member Joined: Oct 2003 Posts: 70 | o2 sensors are wonderfull things | | |
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