Alright. Got this 87 dodge raider with a worn out 2.6.bodies in great shape no rust anywhere,not even in the wheelwells.after i put new crank,rods,.40 over bore,pacesetter header,flow master,weber 34dgec carb(yea, the wife asked me why i rebuilt a motor that not that relible too) i cant get seem to get the carb dialed in. has anyone else had problems with this carb? ive leaned it,richened it,completely remove the egr system.there`s no computer controlled system remaining. if anyone has an idea,please let me know. im freakin out! <img src="/forums/images/graemlins/confused.gif" alt="" />

Waht are the symtoms? How is it running poorly..

Things to look at:

1: I have heard of problems with too much fuel from the stock pump.

2: Is your distributor working correctly? The mechanical and vacuum advance can and to fail over time making the motor hard to tune. Pull the cap and you should be able to rotate the rotor and the springs should bring it back to its original position.
3: What is your vacuume at idle? Any chance you have a vacuum leak?

4: Do you have the distributor hooked up to a ported vacuum port on the carb?



Put your hand over the throat of the carb at idle, does the motor pick up speed or slow down and die out? If it picks up speed you have a vacuum leak.



Kevin

symtoms are: no power unless wot,1/4 of the pedal does nothing,it`s not running rich,but ive got the mixture screw out 5 3/4 turns,so i know its not lean, if the pedal stays in a certin spot it back fires through the carb. i checked every part with soap and water and carb cleaner to see if rpm goes up or down. got none of that.all vacuum hoses are gone with the exception of the distrubiter advance. its got alot vacuum,ive not hooked up a gauge yet. i`ll get that measurement back to ya. oh, ive put a fuel regulator on the stock pump(weber requirement) so it only gets 3.5 psi of fuel.that cleared up the other problems i had before this reared its freakin head. ive run pressure test,leak down test,put my hand over the intake and damn near lost my hand.its breathing good. <img src="/forums/images/graemlins/scared.gif" alt="" /> <img src="/forums/images/graemlins/confused.gif" alt="" /> thanks for putting some thought in it,man. ive just about had it.i love this thing,but im at my wits end.

As you put your hand over the inlet did the motor start to pick up speed it try and die out?

If your lean at part thottle the only fix for that is a jet change, the mixture screw will only affect it when the throttle is closed.

How did the dist look?

And has the motor ever run right with the new carb or is this something that developed?

Kevin

it died out when i put my hand over the in take. i check on the availabilty of different jets for this carb but didnt find any,or dont know what im looking for. which is alittle weriod. the diz looks just fine. not deposits in or around the points in the cap,rotor looks new and the wiring from the ignition mod to the coil hasnt been frayed or chewed upon. ive been having problems with it from the get go.just too poor to afford another carb at the moment.

As far as the dist goes how about the mechanical advance mechanism, did it move freely and what is your base timing set at?

Kevin

i can change the timming with my own breath wether i suck or blow in the vacuum hose. base timming is at 17 btdc as per a tech bulliton i found.i think the manual says 12.

SEVEN degrees btdc, vac disco'ed and plugged! I've run 10, and performance suffered overall. Watch the timing with a light as you come off idle and see if it progresses smoothly to more advance. Any jumping is a hanging mech advance.

ill recheck the timing.think i might have screwed it up. thanks!! ill get back to ya. <img src="/forums/images/graemlins/kewl.gif" alt="" />

My buddy has an 88 Montero that he put the same carb on, He has lots of trouble tuning it too. Like you said, all the emissions has to come out and from there it's a lot of trial and error until you figure it out. Also, from what I've noticed on my 87 and my buddy's 88, the Monteros like to have a good amount of backpressure in the exhaust to really run right, so you might look into that. And even after we got the Weber dialed in, it still doesn't like to be off camber for very long at all. My carb is still stock and I have a much easier time when we are off camber. That's the most I can say to help ya there... hope that helps.