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Top end Issues

oneswftkck

oneswftkck

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I have a 1966 Satellite with a 383/727 package and I am having some serious issues with off idle and top end performance. To start off I just bought this car a week ago and the kid had no information on the engine what so ever, after doing my home work and finding the casting numbers is is a 1969 383 it has an Edelbrock Torker 383 Manifold and an Edelbrock 1407 with 401 primary jets and 398 secondaries not sure of the metering rods they are stamped either 18-485 or 16-485 no information on the edelbrock site. Also did a recent tune up with MSD 8mm Street fire wires bosch supers PN 7916 gapped at .035 and cap, rotor and points points are gapped a .017, timing is set at 12 btdc. The problem I am having is that it stumbles off idle and once it start to gain rpm it spits fuel and back fires out of Carb. I have no idea what cam is in it or the comp ratio. Any help would be very greatly appreciated.

Oneswftkck

I'd tell you how my wife feels but I would rather show you:icon_axe:
 
Check the timing chain for stretch to eliminate that possibility. Easy to do before you go crazy.
 
Also need to check your timing and float levels. I would also look to see if you might have any vacumm leaks. Myself I would think if your engine is more of a stock engine it would be better to run a dual plain intake as I think that the torker intakes are single plain intake.
Matt
 
I tore the carb down and cleaned inspected and reset float levels on Saturday put it all back together and still had same issue. I am pretty sure the engine is stock. The intake and carb were on the car when I bought it. Also when I set the timing the mark was steady as a rock so that is a pretty good indicator that the t-chain is okay, not the best indicator but still pretty good. Noticed today when I started the car cold it ran fine but as soon as it warmed up started having the same issues this time it was loading up real bad at an idle. Out of curiosity I pulled the vaccum line off of the pcv port of the carb and the engine smoothed out and was not loading up. This is why I am confused because every other engine I have built you pull the pcv line off and it runs worse and practicly falls on its face and dies.

aaaarrrrgggghhhh!!!!
 
Pulling PVC causing a vacuum leaks helps it out? Sounds like it running rich? How the tail pipe look?

Also might replace the condenser in the distributor. It cheap & can cause strange things to happen when it goes out.

DO you have a timing light? Is the timing advancing as RPM are increased?
 
Put a new points and condenser set in when I did the tune up. I do have a timing light and when I did set the timing I throttled it up to 2000 rpm and the timing did advance would have to get some timing tape to know just how much. Starting to think that it is rich at idle and lean on the top end. Now I just got to figure out how to fix both at the same time.
 
Pretty much all of my engines ran better with more timing. 12 should make it do ok but it sure won't hurt to give it more and see what it does. A 69 engine should still have decent compression so that it won't need more at the top end unless it's been rebuilt with lower compression pistons. The lower the compression, the more they generally need. As for the intake....it should still run well on a stock engine. I've run them on lots of stock engines but they do even better when you have headers to help compliment them. Also, what brand of points etc are you using? You should check your setting with a dwell meter too. One more question...what is your compression test? It is another tool you need to use to get the best tune possible....
 
Okay here is the latest. Curiosity got the best of me and I tore the rocker covers off and found that I need new rockers, honestly I am surprised the dang thing was running at all because the rockers are so worn that the where the rockers sit on the shaft the holes are so wallowed out that there is 3/16 to a 1/4 inch of up and down play.after I replace those then we will try again.
 
Are you sure they are worn? How bout some pics? Stock rockers look sloppy but but do what they are supposed to do....
 
Ok new problem Rebuilt and cleaned Carb completely and now engine will not fire pulled plugs and it looks like the plugs are drowning in fuel. I only replaced Gaskets reset float levels and cleaned all circuits with carb cleaner circuits were dirty as all get out. By the way rockers are fine had a friend come by and he said they are worn a little bit but not bad enough to cause my problems.
 
Did you verify your firing order is correct?
 
yes I put a new needle and seat in it with how dirty it was I figured that it was best to replace it and on the firing order it should b 18436572 with number one cylinder on the driver side front and the distributor rotating counter clockwise is this correct.
 
oneswftkck said:
yes I put a new needle and seat in it with how dirty it was I figured that it was best to replace it and on the firing order it should b 18436572 with number one cylinder on the driver side front and the distributor rotating counter clockwise is this correct.
Click to expand...

That is correct. Sounds like you've done everything you can do with the carb for basic repair and it still does the same thing? It could be one of the metering rods is sticking in the bore. Maybe it has a brr or rough edge on it? At this point I'd borrow a carb (any brand) from a buddy and install it as a reference point. If the problem goes away: then you know for sure somethings up with your carb. If it doesn't-then something else is amiss. That kind of stuff drive folks to drink more than usual. And you did replace the fuel filter?
 
Sorry for taking so long to reply just decided to get a new carb and I will be damned same frickin problem just turns and turn only time it will attempt to fire is if i hold the throttle wide open then it only sputters once and then nothing.
Ignition problems??? Did a full tune up minus putting a new coil on it. I need help my wife is pissed and wants me to get rid of it.:eusa_boohoo:
 
bad ballast resistor?what coil do you have on it is it stock or a performance one, mine wouldn't run for crap with the stock ballast resistor with the pertronix coil figured out i needed a ballast resistor with the correct ohms that the coil called for then that problem at least was cured im still having other issues off from idle with mine but i think its in my carb it hasn't acted right since day one mines also an edelbrock.
 
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