weber prob

[LenRobertson]

So you have NO wires coming from the Weber? I can't remember if some Webers have an anti-dieseling solenoid. If you have a wire coming from the Weber, that is probably what it is and needs to be hooked up. As far as the wires that were hooked to the Hitachi,  you shouldn't need to worry about them. There should be a plastic connector around the ends of them so they won't short out on anything.

 

If you flooded the engine enough to smell gas in the oil, there is a chance the plugs are fouled enough that just wiping them off or wire brushing them won't be enough. You can take a propane torch and heat the tips up really well. I think the black stuff on the ceramic insulator down below the electrode tip is what you need to burn off.  But I'm not sure burning them off will always work. Sometimes you need new plugs. And even new or new looking plugs can be fouled badly enough to keep it from starting. I've had good looking plugs that I saved by burning off, and some I gave up and replaced. You only need 4 of them, so it isn't a huge expense. Get NGK brand even if you have to look around some to find a source.

 

Len

[thestrangebro]

yeah there is no electrical at ALL that is on the weber. ill torch the plugs, ill literally try anything. i want it to run so bad.

[racerx]

how's your fuel filter?  Maybe something is blocking the fuel from the gas tank?  Run some comressep air from fuel line (up front) and open gas cap..how's your fuel tank is it old, rusty..good luck..

[thestrangebro]

its fine its getting gas. i have never been this stumped before.. :confused:

[ggzilla]

Look, there's only a few thing needed.

Check it out!!!

 

1. Fuel: Is the fuel level correct? And not overflowing?

 

2. Spark: Are you getting big fat blue spark *while cranking*? Or only weak yellow spark?

 

3. Air: Remove the air filter when trying to start the engine

 

4. Compression. Give your engine a compression test. It needs at least 120 psi in all four.

[Sealik]

Pics of the setup?????

Fuel line hooked up correctly....return line?

With the choke closed, fuel and spark....it should fire.

Not sure how well....but it should run.

 

..."and yes the engine ran after a head rebuild but barely for that the hitachi was straight poop"....

 

You sure it was the Hitachi????......not something else from installing the head????

 

[thestrangebro]

yeah the hitachi was pretty rough and broken. im going to go to a compression test, and re check seeing if its getting spark. ill take pics to.

[yello620]

I kinda think that you are dealing with a timing issue also.

[thestrangebro]

i gaped everything new spark plugs. everything checks out. 150 to 155 psi on each cylinder. this is so stupid. plus ive tried to upload pics but being a noob i guess thats why i cant figure it out.

[ggzilla]

1. Fuel: Is the fuel level correct? And not overflowing?

2. Spark: Are you getting big fat blue spark *while cranking*? Or only weak yellow spark?

3. Air: Remove the air filter when trying to start the engine

4. Compression. You have 150 to 155 in each cylinder. Good.

[HRH]

Easier solution:  Spray some brake cleaner down the throat of the carb, see if it will start.  Don't need much.  If it does start, do a little burst every couple seconds.  If it stays running on brake cleaner, you have no spark problem, but an air problem.  Like too much or massive vacuum leak.  Or a fuel problem, as in the idle circuit is plugged, etc.

[schicksal]

Have you checked if the idle mixture screw is set correctly. Turn it in all the way until it stops don't force it then turn it back 1.5 turns out that should get it to run. If you turn it out more than 2.5 turns to get it to run then your idle jet may be too small and the carb runs lean.

[thestrangebro]

ok here's an update. got it running but is was running like poop. now it wont start at all. when is was running the lowest i could get it to idle was 1500. 1.5 turns out on the mix screw. and the dizzy was slightly advanced. now it just wont start. sprayed starter fluid down the neck and nothing. it is getting spark however. total mind truck. new spark plugs and gaped right. dizzy sparks when cap is off so thats fine. but the point gap is about .028 when it says should be at 0.20 on olddatsun.com. 

[ggzilla]

> lowest i could get it to idle was 1500

 

That's the speed where the idle circuit stops. If it has the idle-cut solenoid, then it is not working.

[thestrangebro]

its a basic weber manual choke. bottom of the line no electric

[ggzilla]

So go back to the drawing board again.

 

 

1. Fuel: Is the fuel level correct? And not overflowing? If clear, use staring fluid. That will start a dry engine long enough to run for 1 second.

2. Spark: Are you getting big fat blue spark *while cranking*? Or only weak yellow spark?

3. Air: Remove the air filter when trying to start the engine

4. Compression. You have 150 to 155 in each cylinder. Good.

[thestrangebro]

if the engine gets fuel. get air, and definitely gets spark. why wont it   start? lol i want to push this thing off of a bridge.

[thestrangebro]

the fuel seems fine. it definitely gets gas. runs a teeny bit rich. (when it was running yesterday ) 

[ggzilla]

That was yesterday. Today it won't start, so begin troubleshooting.

[thestrangebro]

could it be the gap in the dizzy?

[ggzilla]

Yes could be. Might also be that the coil has gone out. Or that the carb has gone bad ... or ... any number of things.

 

 

To test your theory that it has air and spark, spray a puff of starting fluid in the air cleaner. It should fire right up for a second. If not then that blows your theory.

 

 

> why wont it start?

 

How would we know? We don't have your vehicle in front of us.

[thestrangebro]

i did spray starting fluid and it wanted to start. a few pudders. full choke and it would pudder for a sec as well. so it wants to start.

[ggzilla]

That is starting I think. But it won't continue to run on starting fluid. In any case it means you have some spark. So probably is not a coil or distributor problem.

 

That leaves the carburetor. Remove the top and check the float drop. Rinse out the fuel bowl and spray the jet passages clean.

 

Or can that weber and put a real hitachi on.

[thestrangebro]

the old Hitachi was garbage, i wish i could have it on instead but i bought the weber already. the weber was just out of the box brand new, could it really be clogged ? lol

[Sealik]

Or can that weber and put a real hitachi on.

 

I doubt there is anything wrong with a new Weber out of the box