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Wont start now with new gasket and diaphragm

#1

R

Rawiri

Was running rough,
Stripped carburetor and noticed diaphragm buggered.
Replaced with new diaphragm and cleaned carb and tank.
Now it won't start??


#2

Fish

Fish

We need some model numbers off of the engine.


#3

StarTech

StarTech

Make sure you have them in the correct order.


#4

S

slomo

Rawiri said:
Was running rough,
Stripped carburetor and noticed diaphragm buggered.
Replaced with new diaphragm and cleaned carb and tank.
Now it won't start??
Click to expand...
Was this an OEM part or Chinese ebay/amazon Gambler Series Special?

Diaphragm upside down? Diaphragm spring missing?

Did you over torque the carb mounts causing vacuum leaks?

Is the choke working?

Is there gas in the tank?

Are you pulling the rope hard/fast enough to generate spark?

Do you have spark?

Are you holding the dead-man lever in on the handlebar to make it run?

Is your spark plug good?

Is the spark plug boot connected?

Are the carb springs and linkages installed correctly?

Do you have compression?

Did you clean the carb and tank with water?

Valves adjusted properly?

Cylinder cooling fins CLEAN as well as top of engine block?

Air filter plugged up?

slomo


#5

R

Rawiri

Its 11pm and pissing down.
It's a 4.5hp with plastic carby on tank. Push mower
slomo said:
Was this an OEM part or Chinese ebay/amazon Gambler Series Special?

Diaphragm upside down? Diaphragm spring missing?

Did you over torque the carb mounts causing vacuum leaks?

Is the choke working?

Is there gas in the tank?

Are you pulling the rope hard/fast enough to generate spark?

Do you have spark?

Are you holding the dead-man lever in on the handlebar to make it run?

Is your spark plug good?

Is the spark plug boot connected?

Are the carb springs and linkages installed correctly?

Do you have compression?

Did you clean the carb and tank with water?

Valves adjusted properly?

Cylinder cooling fins CLEAN as well as top of engine block?

Air filter plugged up?

slomo
Click to expand...
Too many questions to answer, I'd say yes to all


#6

R

Rawiri

StarTech said:
Make sure you have them in the correct order.
Click to expand...
Diaphragm on 1st then gasket, still no go, even when I I prime


#7

cpurvis

cpurvis

Have you tried giving it a little shot of starting fluid?


#8

R

Rawiri

cpurvis said:
Have you tried giving it a little shot of starting fluid?
Click to expand...
The primer bulb works, squirts fuel into inlet tube.
Today it fires up, starts to Hunt for around 10 seconds, then dies


#9

S

slomo

Rawiri said:
Today it fires up, starts to Hunt for around 10 seconds, then dies
Click to expand...
Carb is dirty or diaphragm is faulty.

Check for vacuum leaks. Spray WD-40 all around carb to tank gasket area and around carb to engine mount. If the engine smooths out you've found your leak.

slomo


#10

R

Rivets

Seeing that you don’t supply us with the engine numbers I’m guessing here. Normally the diaphragm goes against the carb and the gasket against the tank. Saying yes to all questions tells me you want a fast solution and can’t take the time to provide us with a better picture of what is happening. We’re not psychic so without your help we have a hard time providing you with anything more than guesses.


#11

S

slomo

Rivets said:
Normally the diaphragm goes against the carb and the gasket against the tank
Click to expand...
Pretty sure, as usual, you are correct sir.

slomo


#12

S

slomo

Carb mount on tank flat?


#13

S

slomo

Rawiri said:
Was running rough,
Stripped carburetor and noticed diaphragm buggered.
Replaced with new diaphragm and cleaned carb and tank.
Now it won't start??
Click to expand...
Tank full of gas? Briggs says to fill the tank for quicker starts after carb work. E-10 fuel is frowned on for OPE.

Do you have good spark? Take an old spark plug. Gap to 1/4" wide. Check for a good blue spark.


#14

S

slomo

Have you checked for vacuum leaks yet?

Does it run rough at low rpms or high speeds?

Fuel tank clean?

Fuel pickup tube have a crack in it or leaking AT carb body?

slomo


#15

R

Richard Milhous

I had one with a brand new diaphragm was installed with a wrinkle (and blade was upside down, not relevant here). Intake nozzle isn't always replace either though it should be. No run, no surprise.


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