OP
UTC

Member
Super 150
Joined: UTC
Posts: 31
Location: Austin
 
Member
Super 150
Joined: UTC
Posts: 31
Location: Austin
UTC quote
I have a 1970 Super 150, Bajaj ignition, new 20/20 carb that I dissembled and cleaned. New petcock, fuel line and spark plug.

It will not start on multiple kickstarts. Some starter fluid gets a few revolutions but that's it.

I have a new coil coming in. It is getting spark on kickstarts. I think it might be a float problem. But I am really at a loss.
@garncarz avatar
UTC

Molto Verboso
1964 Allstate Cruisaire, 2022 Husqvarna Vitpilen 401, 1972 Suzuki T500J
Joined: UTC
Posts: 1023
Location: York, PA (the intellectual center of the universe)
 
Molto Verboso
@garncarz avatar
1964 Allstate Cruisaire, 2022 Husqvarna Vitpilen 401, 1972 Suzuki T500J
Joined: UTC
Posts: 1023
Location: York, PA (the intellectual center of the universe)
UTC quote
Are you SURE that you are:

1. Getting fuel to the carb
2. Getting adequate compression
3. Not experiencing an air leak
@birdsnest avatar
UTC

Not So Moderator
VNB VSC VMA VSX - o9c vbc vmb
Joined: UTC
Posts: 8311
Location: Hustletown, TX
 
Not So Moderator
@birdsnest avatar
VNB VSC VMA VSX - o9c vbc vmb
Joined: UTC
Posts: 8311
Location: Hustletown, TX
UTC quote
Sounds like maybe a fuel delivery issue. Float or bad flow?

Take off the banjo. open petcock. do you have fuel flow?
If yes..proceed to carb rebuild. If no... check fuel line and fuel-tap for fuckery.
@socalguy avatar
UTC

bodgemaster
63 GL, 76 Super (x2), 74 Primavera (x2), 79 P200, 06 Fly 150
Joined: UTC
Posts: 7155
Location: So Cal
 
bodgemaster
@socalguy avatar
63 GL, 76 Super (x2), 74 Primavera (x2), 79 P200, 06 Fly 150
Joined: UTC
Posts: 7155
Location: So Cal
UTC quote
Bajaj ignition is always a suspect.
@chandlerman avatar
UTC

Lucky
76 Sprint V, 63 GL, 62 VBB, 05 Stella, 66 Smallstate, 79 P200E, 66 Lammy S3
Joined: UTC
Posts: 9957
Location: Nashville

72 Days Since Last Explosion
 
Lucky
@chandlerman avatar
76 Sprint V, 63 GL, 62 VBB, 05 Stella, 66 Smallstate, 79 P200E, 66 Lammy S3
Joined: UTC
Posts: 9957
Location: Nashville

72 Days Since Last Explosion
UTC quote
SoCalGuy wrote:
Bajaj ignition is always a suspect.
Yeah, I don't trust those things as far as I can throw them in the trash.

Sure, once upon a time, that Bajaj was the only game in town, but that problem was fixed by the market over ten years ago.

When you say you cleaned the carb, how extensively did you clean it? Like..."ultrasonic carb cleaner followed by high pressure air blow-out," or "removed the jets, sprayed some carb cleaner in it, called it good?"

I just dealt with this on a bike and it took two rounds of cleaning (after the owner said he had cleaned the carb) at the ultrasonic cleaner end of the spectrum to finally get it to run right.
OP
UTC

Member
Super 150
Joined: UTC
Posts: 31
Location: Austin
 
Member
Super 150
Joined: UTC
Posts: 31
Location: Austin
UTC quote
New carb and I took it through bery carb cleaner and then sonic cleaner. I can see the fuel enter into the carb.

I bought the Vespa with Bajaj system. Trying a new coil tomorrow. I did have it running off another carb but now nothing with either carbs.
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