slate84

ok, i went to try to start my 12a with dell dhla for the first time after getting all the minor stuff hooked up. i'm was expecting to do the 3 turns at 5 sec to fill up the bowls and have it fire up. no such luck. so i pulled the plugs, turned it over at wot till there was no mist. threw in new plugs. no luck. repeated proces (notting that the bottom plugs ((the new ones)) were still dry) and sprayed some starter fluid in it. it would run till the sf fumes were gone then just spin. tried putting some mmo down each side of the intake on the dell with some vinyl tubbing, tried starting it, no luck. pulled the plugs still dry. mind you i was turnning over for a while with the car jumppered to my jeep. i pulled the top off my dell and was kinda curious that the float bowl area on top hardely looked gassy. i could see standing gass in the holes on the bottom, but none in the bowls the gasket was barely wet on the edges. now im thinking it has to be that needle jet that's in it. its a 225, i know it's supposed to be a 300 but i figured this would at least get it running since the one the previous owner had in was a 150. can anyone help?

slate84

please someone help!!!

Glazedham42

iTrader: (4)

Are you getting fuel out of the fuel line? When was the last time you changed your fuel filter?

slate84

entire fuel systems new. new fpr, holley red, filters, line. i had it running yesterday on the stock nikki fine. fuel goes into the banjo fine. it happens between the float bowl and the banjo i think?!

Glazedham42

iTrader: (4)

Is it possible that you have a clog? Try blowing out the fuel path with some compressed air. I'm not really familiar with Dellortos but, a carburetor is a carburetor. If you know that your fuel system is functioning properly and putting out the right volume of fuel and pressure then it has to be the carb. And since the fuel isn't getting into the float bowls, then the problem has to be somewhere between there and the fuel inlet. I'd say try blowing everything out good with compressed air. I would bet that you have dislodged some kind of dirt or rust or something, and the fuel can't get through.

MattG

iTrader: (2)

Hes right, your problem lies between the inlet and the bowls, the jets having nothing to do with fuel not getting to were it needs to be, you have to have fuel in the bowls in order for the jets to do there thing.

-Matt

slate84

can someone tell me exactly how the needle jet and floats are supposed to be set up in a dell?

DriveFast7

iTrader: (1)

gruntled.com has the float setting.

take the lid off. turn it on it's side so the float moves left to right, not up to down.

push the float so the needle barely bottoms out in the seat. the idea is NOT to compress the spring in the seat.

measure from tip of float to lid gasket. the tip of the float is furthest away from the needle and seat. should be 14mm. if not bend the float arms with needle nose pliers until it is. THEN turn the lid to it's normal orientation so it'll move up to down, the floats will drop. full drop should be 28mm. HOW TO MODIFY YOUR RX7 book has this too with groovey pictures but they reccomend 15mm. 14mm is better for cornering=won't lean out.

NOW, what you really should do is hook up the lid to your fuel line per the norm but DO NOT screw the lid onto the carb. hold the lid above a drain pan. turn on ignition. make sure fuel flows outta needle/seat. compress float, it should stop flowing gas at the 14mm measurement.

gruntled.com

slate84

ok, soon as i get done with guards today, ill go get a metric ruler. so the 14mm is just so the needle spring isn't compressed and the 28mm is when its hanging all the way down as from measured from the top tip of the foats to the gasket ceiling?

slate84

drivefast7. thank you so much dude, i pulled my lid off and took some measurements and they were at 28mm starting to compress, then 42mm at full drop. runs perfect now, just need to figure out the fine adjusments of the idle mix screws.