Datswagon

[Exor]

Im wondering if my 32/36 weber should be thrown off a cliff or if its an easy fix. when you turn the key it wants to start then stops and shoots out white smoke and gas out of the carb. i just had it rebuilt and im stumped. float maybe?

[MicroMachinery]

How long ago did you adjust your valves and timing? It may very well not your carb.

[FoxyRoadster]

check the timing if the carb was properly adjusted

[68Datsun510]

CHECK YOUR PLUG WIRE FIRING ORDER on the dizzy cap! Mine did the same thing, i had 3/2 backwards.

[Exor]

I haven't touched the valves, and I know my timing is off but it won't start up for me to time it properly. I should check to see if my firing order is correct. I'll doulve check

[MicroMachinery]

Oh yeah, and Pics of the wagon!

[68Datsun510]

well, to bandaid it for now, advance it a little. backfiring usually occurs when its too retarded. Once you get it running, go from there.

 

Remember, best way to time an engine properly:

 

find TDC, #1 cam lobes in a rabbit ear position. line crank notch up with zero degree mark on timing plate.

 

with dizzy removed, look at the dizzy driveshaft

dizzy drive tang should now be at "11:30" (not quite straight up/down, not quite 11 o'clock)

 

if thats good, install distributor, find where the rotor points to as #1, find it on the cap, arrange your wires in a 1,3,4,2 order, counterclockwise.

 

 

anyone else gonna chime in if i missed anything?

[Exor]

Advancing it did nothing, I wish I could post a video of it. It's still puffing out white smoke and gas.

[HRH]

Did you mess with the oil pump any? Perhaps you have the distributor drive gear a tooth off. That will do it. To get to TDC, take out number one spark plug hole, put a screwdriver down it until you feel the top of a piston. If you don't feel that, take out the screwdriver, rotate by hand with a 1 and 1/16th socket on the crank pulley until the 2nd timing mark on the pulley lines up with the timing indicator tab. If you only have a one mark crank pulley, align it to that mark. There are only two possible positions in rotation on that mark. One is TDC, one is BDC. If you have it on the mark and you can't feel the top of the piston, turn it around once more and you stick the screwdriver in to feel the top of the piston.

 

Once you have achieved that, remove the distributor from the housing, check to see if the distributor drive gear is in the 11:30 position, or between the two mounting bolts for the distributor housing if you were to extend a straight line from the drive spindle. If it is, your drive gear is in correctly. If not, it's a tooth off.

 

If it is, then look to see where your dist. rotor points, see if it's relatively close to a wire position on the dist. cap. If it's not, adjust the distributor so it is.

 

After you get the timing figured out, then dick with the carb. It's probably not the carb.

[banzai510(hainz)]

start from beginning.

If car was running fine earlier and you did no major mechanical stuff besides the carb pull then I assume the valves and distributor timming is fairly in reason to ajust by hand.

No if you pulled a oil pump or swapped in another dist from another car you could have induced a timming proplem.Or pulled plug wires and got them wrong.

 

But backfiring is a usualy a firing order or timming proplem. You still have points????? adjust that also.

 

watch this

http://www.guba.com/watch/3000024223/Hainz-Datsun-L-Series-Engine-01-Timing-Tare-down-and-Rebuild

[510kevin]

if timing/valves are good, do you have an electric fuel pump? mine did when i got it and it did the same thing. too much fuel pressure, it wanted to fire, but would backfire, flood, foul plugs and shoot shit out of the carb.

 

just a thought......