Intake and carb swap problems.

[grandpaslincoln]

Piece of SHIT. I got the intake on there the first time, everything was fine. Except that the temp wouldn't go above C. Then I took it out on the road, ran fine. Gave it a lot of throttle, started missing badly. Got it home, checked everything I possibly could, but no clues. Started it the next morning, ran fine. Took it out, still wouldn't go past C, gave it a lot of throttle, actually just took it up to 55 and put it in OD, went to slow down and turn around, same shit again. Me and Pirate figured bad intake gaskets or the intake was warped. He sent me some quality intake gaskets. I checked the gasket surface on the intake, straight and true. Put the gaskets on, torqued it to spec, got it running again. It's STILL doing what it was doing before. I got it home and started checking some more. I started pulling some spark plug wires. The fucker is only running on 4 cylinders. 2,3,5, and 8 are firing, the rest are dead. The wires are at least getting spark, I can hear it popping in there. What the hell would cause this to happen?

Now that I'm thinking about it, could it be the carb? It's a dual plane manifold, so if it were operating incorrectly, two cylinders on each side would mess up right? Somebody help me out here, I dunno what the fuck to do. I was supposed to take the POS on a trip, but that ain't gonna happen now.

Carb is a 1406 Edel and the intake is a Professional Power Typhoon dual plane.

[Rob Roy]

Are you saying that the engine won't reach operating temperature since you performed the swap? Did the gauge operate correctly before the swap? Sounds like the cooling system may be air bound.

As for the misfire, you are right that a nonfunctional booster or something on one side of the carb would impact 4 cylinders due to your dual-plane intake. If these cylinders were misfiring due to a lean condition, the spark plugs would be nearly white; have you checked yours?

Also, what are you running for an ignition? How much initial and centrifugal advance are you running?

Was the carb purchased new? If not, I would recommend tearing it down and making sure it has the correct jets and metering rods installed, and give it a good cleaning.

[grandpaslincoln]

1. Yes, engine won't reach operating temperature after swap. Air trapped is also my guess, nothing else really makes sense, the heater blows pretty hot so maybe theres an air bubble around the temp sensor?

2. Letting the engine cool down before I pull the plugs, will get back to you on that one.

3. Ignition is Duraspark II, standard ignition module. I set it to 14*, don't know what the total is.

4. Carb was purchased used. As far as I know it was on Phayzer5's Lincoln before I got it.

[gadget73]

If one of the jets was plugged, thats what you'd get. If you follow the intake runners, I'll bet you'll find one side of the carb feeds 2,3,5,8 and the other side feeds 1,4,6,7. Might be time to pop the carb open and see if a bit of crap got stuck in a main jet. A major vacuum leak under the carb on that side *could* cause this, but I doubt it would be that severe without affecting the other side as well. Eddy carbs are real easy to mess with, just pop the top plate off and see if there is any crap in the bowl. It might even be varnish buildup in one of the venturis. They are removable, so pull them and spray carb cleaner through if needed.

[import convert]

do you know if hte other guymessed with the arb and tried to tune it? could be tuned wrong and is running on one side of hte carb. seen it at school wiht kids and their mustangs and cameros.

[jm8881]

do you know if hte other guymessed with the arb and tried to tune it? could be tuned wrong and is running on one side of hte carb. seen it at school wiht kids and their mustangs and cameros.

Thats my one car pet pieve.... its CamAro!

Other than that I completely agree with this statement. The edelbrok 1400's are real easy to get running after someone has messed with it. Both adjustment screws are on the front of the carb. Just turn them all the way in, carful not to go to tight and ruin the adjusters, then when you are all the way in back them off equal amounts. About 5-6 half turns and as long as the carb is in ok condition it will start and fire on all cyls. Then it's just a matter of adjusting your idle screw and those screws until you reach the highest amount of vacuum you can at idle.

If it were some kind of intake leak or carb mounting surface leak you would have a hard time keeping it running especially if the leak was big enough to keep 4/8 cyl not firing.

[Southern_Pride]

Get you hand wet, run down the wires of the cylinders not firing and see if you get shocked. May just have some leaking wires. Also if the 4 barrel kicks open does it seem to run better? If so that would seem to support the clogged main jet.

[grandpaslincoln]

I found the problem. Photos to come.

[87gtVIC]

I found the problem. Photos to come.

detective skillz!

[Pirate]

I found the problem. Photos to come.

And it's a rather impressive problem. I for one, was shocked into....well....'shockedness' when I found out what it was.

[Pirate]

In fact, I'm sitting here, chewing on my fingernails, and waiting in excited anticipation of what Jon is about to reveal.

[Pirate]

I haven't been this excited since I first saw road signs for 'the thing' 50 miles outside of Tucson, Arizona, 25 years ago.

http://en.wikipedia.org/wiki/The_Thing%3F

I for one, HAVE seen it.


But it pales in comparison to what Jon is about to show us.

[grandpaslincoln]

First two pics are of the left side bowl, the side with the problems. Left hand fuel bowl has a nice pile of rust down at the bottom. Right hand side is rusty, but nothing sitting in the bottom. I guess a rebuild is in order. As for how the rust got in there.......I have no clue. There's nothing on the carb that CAN rust, it's either brass or whatever the carb itself is made out of. Had to be outside contaminates, my fuel filters are fine, must have been from before I had it or something.

:nonono:

[Pirate]

Jon, the venturi boosters need to come out, and be cleaned out with brake cleaner when you blow all of that junk out.

[87gtVIC]

weird.