engine bogging out at 3200

Not to be a *** **** but the Predator I pulled off the drag car works really, really nice!

Well...I saw Jeff's problem in action today!It does look like what Skyhawkflyer is on it! After the engine ran for a few minutes...the choke plate was not opening.
I am not familar with that carb...but was wondering if the sping tention is adjustable?
Also...can you convert it to an electric choke?

By your description, it sounds like the root of your problem, or at least a start!!! Take a picture, and soak it down with penetrating oil that creeps. You'll get it off. Patients!

Yes,
Your thermostatic spring pulls the choke open as it warms up. If the spring is defective, the choke doesn't open. If the choke doesn't fully open then the secondaries are not available at any throttle position. Post a picture of the thermostatic spring.

Right on Skyhawkflyer!

Get back on the dabnab horse and ride again!We have a month & 1/2 of usually good weather where there is less traffic!
I will make you a bet...
that 62 we are getting rebuild will be on the water before you are running trouble free!You have a big head start...engine is still at the machine shop!
Dinner and drinks(movie...Team America) for the winner!!!Get to work you pathectic bast__d.

There a series of steps to set up a Q-j properly. These include choke pull, choke thermostat, chock unloader, accelerator pump, choke holdoff or lock, primary metering rod, secondary metering rods, secondary air or vacuum vane windup spring & of course float height and float drop. Some of these require special tools to measure properly. Most of the time you get lucky and they don't need adjustment. If you do not have a history of the boat or do you know if the carb & spare are the proper match to the engine that presents another problem. I think the right path you are on is to make sure that the choke opens all the way enabling the lock out to come off. While the engine is first started cold make sure the choke pull is opening enough. Give me the carb number or look in the rebuild instuctions for this info. When these carbs wear with age & use these adjustment are you baseline. When starting cold if the engine runs rich adjust the choke pull off just enough to get rid of that condition. Now back the lock out lever the choke will take 5-8 mins to warmup @1200-1500 rpm. If it fails to open check that it is recieving warm air from the manifold tube or if it has an electric choke the proper voltage is there. If that is OK then the tension on the secondary windup spring may be wrong. Once again look in the rebuild spec for the proper turns to tension the spring. When you find that loosen the set screw underneath the air horn @the right side of the secondary air vane and hold the adjustment screw with a small screwdriver to adjust. This all sounds a little complicated but it really is not if you understand what to adjust in which order. Check the choke stat for opening & the pull off and let use know what you find before we mess with that air vane windup spring. Good luck!!1

located in illinois 78

Debates are good for learning. I will watch this one and see what I learn!

One thing I want to throw out there for debate...Vacuum secondaries or manual??? I am hearing two versions...I don't know the Qjet carb well at all,however I did look at Jeff's(who started the post) and it certainly looks to be a manual pull on the secondaries.

Nates78ski...agree..what ever goes on(holley, qjet or edelbrock)will usually require adustment...the carb on the boat is new and he has a spare rebuilt carb in the garage...I don't think he needs to spend more cash,but just wants to understand the carb and learn how to make the adjustments!

Hopefully you guy's that have knowledge of the Qjet get get on the same page and and help solve that poor pathetic bast--ds issue!I can call him that...he's a friend

looked at motor a little more today and i believe it is my secondaries not opening. they would not open even when i had full throttle. oh well ill probally get when i get my next day off work

30 years of repairing ignorant wanabee mechanics screw ups have allowed me to earn good living. If you own a Qj, holley or an Edelbrock they have all a have to set up properly. All carbs do wear out with use. I suggest you take this carb to a reputable mechanic to check it on a bench. You may have to drop $300.00 on a new unit and if you do buy the Edelbrock. Easy to adjust & very turn key.Where you located in indiana.

Do you have a wedge plate? Everything revolves around wedge plates. My .02 worth....
From all my Q-jet experience, (and Holley) I'd rip the thing off your intake and throw it out on the dirt driveway. They are a constant headache. Put on an Edelbrock marine. They are simple to adjust and easy to rebuild when it comes time. Or better yet, convert to throttle body fuel injection. The money will be well spent.

well im going to check a few things. i think everything is good on my timming.? i still think its my secondaries not opening i'll know for sure tomorrow because ill be able to go down to the dock during the day
what kind of beer do you want?

nates78ski
dude you are so full of crap
I have never seen a Q-jet that has vaccum secondaries they are mechanical. The choke pull off is for the choke not secondaries. please not confuss the guy with incorrect information.

Jeff screw in the idle mixture screws all of the way using light pressure and stop when they stop do not torque on the screws otherwise you'll damage them. Once they are fully closed back them off 1.5 turns and then reset the timing. An easy way to see if the harmonic balancer is slipped is to bring the #1 cylinder up to top dead center then look to see that the zero mark on the balancer matches the zero mark on the timing ear mounted to the block. If it doesn't then you need to replace the harmonic balancer. I'll look and see how far Decatur is from here and if it's not to far and you buy the beer I'll get you fixed up in no time. Q-jets are a little harder to adjust correctly but once they are they stay that way for a long time, holley's are easier but you have to re-adjust them regularly

I bet the whole problem is happening just because I am GAY!