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Author Topic: Allow me to introduce myself  (Read 2926 times)

Online irk miller

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Re: Allow me to introduce myself
« Reply #20 on: Jun 18, 2018, 15:14:07 »
You have pilot screws, which are for fuel.  If you blow through them to the float bowls, then you're confirming they are fuel.  The vacuum through the venturi draws fuel through the jet directly from your bowl.

These carbs are very picky when it comes to air flow.  All of your air hoses need to be hooked up.  All of your rubber needs to be in good working order.

Offline SquidHunter

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Re: Allow me to introduce myself
« Reply #21 on: Jun 18, 2018, 15:31:29 »
You can never clean a spark plug
It will work for a little while, but in the end it will foul so much easier.
Just drop the 5$ a piece and replace them to eliminate that possibility.

What do you mean when you blow through them?
You removed the screws and blew into them?
It would come out the pilot jet and air inlet if they are air screws.

I removed the plugs and turned the engine for about 15 seconds to blow any excess gas out. Maybe a drop or two came out. The plugs were soaked though.


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Offline SquidHunter

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Re: Allow me to introduce myself
« Reply #22 on: Jun 18, 2018, 15:32:50 »
I removed the plugs and turned the engine for about 15 seconds to blow any excess gas out. Maybe a drop or two came out. The plugs were soaked though.


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Never mind, you ment blowing through the pilot screws? I took them out and blew cleaned through them.


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Offline SquidHunter

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Re: Allow me to introduce myself
« Reply #23 on: Jun 18, 2018, 15:36:20 »
You have pilot screws, which are for fuel.  If you blow through them to the float bowls, then you're confirming they are fuel.  The vacuum through the venturi draws fuel through the jet directly from your bowl.

These carbs are very picky when it comes to air flow.  All of your air hoses need to be hooked up.  All of your rubber needs to be in good working order.

They are picky for sure. The rubber is all good. Air cutoffs are good.

Iíve got some experience with this set of carbs, but for whatever reason they changed.


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Online Maritime

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Re: Allow me to introduce myself
« Reply #24 on: Jun 18, 2018, 15:38:09 »
You didn't by mistake incorrectly install or switch the main and secondary jets in one or 2 of the carbs?
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Offline SquidHunter

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Re: Allow me to introduce myself
« Reply #25 on: Jun 18, 2018, 15:38:33 »
You can never clean a spark plug
It will work for a little while, but in the end it will foul so much easier.
Just drop the 5$ a piece and replace them to eliminate that possibility.

What do you mean when you blow through them?
You removed the screws and blew into them?
It would come out the pilot jet and air inlet if they are air screws.

The plugs are probably done then. Iíll change them for sure.

Iíve been running iridium, because they really are that much better, but Iíve had this set on for over a year


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Offline SquidHunter

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Re: Allow me to introduce myself
« Reply #26 on: Jun 18, 2018, 15:43:14 »
You didn't by mistake incorrectly install or switch the main and secondary jets in one or 2 of the carbs?

I did not. Iíve made that mistake before. Itís an easy one to make. I now double and triple check them.

I do suspect they are now the wrong size tho.

Iíll go back to stock, with new plugs. If for nothing else as a better starting point


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Online irk miller

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Re: Allow me to introduce myself
« Reply #27 on: Jun 18, 2018, 15:51:11 »
FWIW, the air cut offs are just an emissions trick to keep unburnt fuel out of the exhaust during decel.  They can be blocked off.

Offline SquidHunter

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Re: Allow me to introduce myself
« Reply #28 on: Jun 18, 2018, 15:57:50 »
Much appreciated to everyone! Just talking through everything is a tremendous help.

Hereís how Iíll move forward, when I get back from my trip: 1. Pull the carbs (again) . Iíll rejet back to stock, and set the pilot screws per manual 1.5. Iíll do another bench sync for staters. 2. Replace the old plugs with new 3. Reset the timing. It was probably right to start with, but Iíll set it up again just in case.

I feel pretty confident it will spring right into action.

In the meantime Iíll keep my battery on charge. What was baffling seems to make sense now, and thatís a relief. I mean spark, fuel, and air..... am I right?


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Offline SquidHunter

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Re: Allow me to introduce myself
« Reply #29 on: Jun 18, 2018, 16:12:22 »
FWIW, the air cut offs are just an emissions trick to keep unburnt fuel out of the exhaust during decel.  They can be blocked off.

Iíve heard that. Apparently it enriches the mixture at idle a bit too? Iíve also heard that. When I first got the bike, I never could get it to idle right until I changed the air cutoffs. Iíve got a lot of traffic where Iím at so a proper idle is high on my priorities list.

How do you block them off? Heard any success stories with it?


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