2005blaster Not getting peak on throttle.

[2StrokeCrazy]

Stock except fmf fattys and a 220JET TORS deleted runs awsome in idle revs almost to full rpm. After warm up its boging slightly at 50% throttle and 3/4 is worse. If I gradually accelerate I can get 90% throttle no bog. Just went threw carb and reeds vary small crack or imperfection on one of the reeds . Any ideas. First post help me out if I leave something out. Peace guys.

 

[Larry's Shee]

Welcome !!

Your problem is too small of main jet. Do not run it until you install correct jets.
IIRC, you will be 270-290 range, plug chop/read will confirm size.
Also, plan now on replacing those reeds asap, they won't get any better, otherwise you'll be asking why it's doing _____

 

[Blaaster]

Faltering at 1/2 to 3/4 could also point to a lean needle, the clip should be in the middle slot.

The #220 main may just be hindering the flow to the needle jet some at 3/4 throttle.

If the needle is from an aftermarket kit it could well be the wrong one, is the needle red or blue?

 

[2StrokeCrazy]

Thanks for reply so fast! it did run fine on this jet so, I checked the needle(wasnt in middle) seems to be back to perfect tho I didnt get a test ride gotta go make more money for toys. Thanks agin guys. Ride on!

 

[Blaaster]

Sorry to be a pain but you need to do as Larry said, put at least a #280 main jet in there or take a very large risk of cooking the piston very soon.

The FMF Fatty itself calls for a #260 main jet.

 

[2StrokeCrazy]

Sorry to be a pain but you need to do as Larry said, put at least a #280 main jet in there or take a very large risk of cooking the piston very soon.

The FMF Fatty itself calls for a #260 main jet.

Ok got the jet kit and will try that tomorrow and post results thanks agin ps after test ride it would still bog near high throttle

 

[Blaaster]

If it is faltering near WOT then up the main jet a couple of sizes.

You mentioned a jet kit, often the jets in a kit are not the correct size, plug chop the jet to confirm that it works.

 

[240Fun]

That bog at high throttle is a lean bog basically not enough gas to air very bad for the engine can cause catastrophic problems in a hurry or at least shorten the life of the engine running it like that