Can't figure it out

[Maniacmotomouth]

Ok so here it is. I have never noticed this because I have never been around other blaster or any 2 strokes really. When I first start rolling I have to give it ALOT of throttle to get it moving but once it gets around a quarter of the way through the revs it takes off like a shot. I have done plug chops and leak down tests and all come out good. I watched a video a second ago on a blaster ride and he was able to have power from a dead stop. I just can't figure out why mine takes that long to rev up. Any suggestions.

 

[speedyslyder]

lot of things come into play on that one.
carb settings for one of them..list goes on

 

[Wifesblaster]

Air screw would be my first thought. What is yours set at?

 

[Maniacmotomouth]

It's around 2 turns

 

[Maniacmotomouth]

I have tried the air screw to no avail. It definitely runs best when at about 2 turns . And forgot to mention it has new spark plug also

 

[speedyslyder]

airscrew
how much gas your throwin at it
how good at riding you are lol
whats it like when you pin it and let go of clutch?

 

[speedyslyder]

Air screw would be my first thought. What is yours set at?

me too

 

[Blaaster]

I think what you describe , is the nature of the beast

There many be nothing wrong with the bike!

Two strokes do not perform well at low revs, maybe , just maybe you are expecting it to perform when it is just not within the parameters of the powerband.

Riding a smoker is a whole different kettle of fish than a 4 poke.

Below a certain rev, 2 strokes produce little power, but when the rpm and the characteristics of the header pipe meet, power will come on surprizingly quickly.

 

[Maniacmotomouth]

Pin the throttle and release the clutch would put me on my back. Like I said high revs it works great. Blaaster that's what I thought for the longest but after watching video after video of blasters running I am thinking something with mine is off. If I can remember and there is any daylight left tomorrow I will make a video of it. I have always hated how sluggish it is when starting out, I am just hoping that it's something that can be fixed!!!

 

[Awk08]

have you checked your float level (20-21.5mm) and needle clip position (middle slot) ?
cleaned carb properly ?
air filter clean ?
reeds good ?

check the stickies in the carb section for threads on floats and cleaning

 

[Maniacmotomouth]

Cleaned carby maybe 2 months ago? I will again to be sure that way I can recheck float and needle position. Air filter could definitely be an issue I hadn't thought about. It was looking pretty gross when I took my seat off the other day. I'll order a new one just as a matter of maintenance

 

[dirtysquared]

This might sound crazy , but if you rebuilt the carb with a kit, the pilot jet might not be a genuine mikuni.


Just throwing that out there for ya.

 

[Maniacmotomouth]

This might sound crazy , but if you rebuilt the carb with a kit, the pilot jet might not be a genuine mikuni.


Just throwing that out there for ya.

I DID in fact rebuild with a cheaper kit. However wouldnt my plug chops show up bad if it was the wrong jet size?

 

[Awk08]

I DID in fact rebuild with a cheaper kit. However wouldnt my plug chops show up bad if it was the wrong jet size?

wide open throttle plug chops only indicate the main jetting, not the pilot or needle clip settings.
(although you can do partial throttle plug chops, i've never seen the need to)
clean and put the old stock pilot back in, tune the airscrew for high idle, then fine tune while riding.
check the float height and needle clip setting while you're in there

 

[Maniacmotomouth]

Well I have lost the old pilot jets but was going to order some new jets so I can remove the airbox lid and put exhaust on it. I'll just order one when I get the others

 

[bummer981]

You should clean your air filter before every ride.

What size sprockets and tires do you have on it?

 

[Maniacmotomouth]

The tires right now are huge 22" balloons. Should be getting my 20" rzrs in in the next few days tho.

 

[Wifesblaster]

What is the air screw set at?????

 

[Maniacmotomouth]

~2 turns out

 

[Blaaster]

32.5 pilot jet.

Adjust float level, 20 - 21.5 mm.

Needle in middle slot.

Adjust idle speed.

Set float level, make sure that all jets are clean and fuel flows freely from the float bowl drain when the screw is cracked open.

Start with air screw 1.5 turns out.

Set idle screw so that it has some sort of idle. With TORS it is the big screw under seat on top of unit. With no TORS is is the brass screw midway down carb body.

Warm up motor and then set idle screw for a faster idle, 2000rpm+

Adjust air screw either way to get the fastest idle.

Adjust air screw a little at a time leaving 10 secs or until the motor responds.

Re adjust idle screw for desired idle .