2005 blaster can’t figure out what is wrong with it

Chico

New Member
Apr 26, 2018
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I have a 2005 blaster just got a full rebuild done back in April this year it’s been bogging down the past month I cleaned the carb out the main jet is on 260 I have a Fmf pipe silencer k&n filter and boysen reeds last time I rode I was in 5th gear it shut off by itself lost all power and wouldn’t kick over i got it home tried to kick it again and it sounded like it backfired I’m hoping it’s the spark plug but have not messed with it yet it did this last time right before it blew up and I’m hoping it didn’t blow again any suggestions ? Also it feels like it has no compression in the Kickstarter
 
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do a compression test now

was it leakdown tested ?
plug chops for main jetting ?

I'm calling it fried :(
how did you determine a 260 main for those mods listed ?
you needed more like a 290-ish main

IF..... you got lucky, change the plug, check the reeds, leakdown test it (I have testers if you need one)
buy 280, 290, 300 and 310 main jets, start large and plug chop down
 
Like awk said, FMF should start at like 280 and go up, def way too low on the jet. Follow what Awk said above and report the findings!!!
 
do a compression test now

was it leakdown tested ?
plug chops for main jetting ?

I'm calling it fried :(
how did you determine a 260 main for those mods listed ?
you needed more like a 290-ish main

IF..... you got lucky, change the plug, check the reeds, leakdown test it (I have testers if you need one)
buy 280, 290, 300 and 310 main jets, start large and plug chop down
When I finally took the carb off after I bought it it said 260 on the main jet piece and how do you do a leak down test ?
 
When I finally took the carb off after I bought it it said 260 on the main jet piece and how do you do a leak down test ?

Have you tried Compression testing Awk mentioned? (Stock blasters should get between 110-130 psi)

I highly recommend Awk’s leakdown testers! Bought one myself, had the thing tested and leak found within an hour!

To preform a leakdown test (I’ll be using awks tester as my example)

First start by removing the carburetor, on the intake boot you should have a pipe clamp on the rubber intake fitting,

Next insert the leak down tester insert piece into the rubber intake boot on the top end of your blaster

Tighten the pipe clamp that’s on the intake boot down until no leaks can happen there (remain cautious! Pipe clamps can strip out and youll need a new one!)

Remove the exhaust pipe, and exhaust flange and insert the exhaust plug into the exhaust hole inside the top end (on awk’s exhaust plug which comes with his testers, you’ll need a 13MM socket to tighten down the nut which will expand the plug to fully seal your exhaust)

After the tester is installed, as well as the exhaust plug, you may start pressurizing the engine (on Awks tool, the one end has a Bulb you can squeeze to add pressure) (kinda looks like a blood pressure bulb on those blood pressure medical tools)

You’ll want to keep an eye on the PSI gauge on the leak tester, your blaster should be holding 5-7 PSI for atleast 5 minutes. If yours is, CONGRATULATIONS! your blaster is good!

If your blaster is not holding appropriate PSI, take a spray bottle of soapy water, (you can buy spray bottles at most dollar stores, Walmart’s, or Lowe’s/Home Depot) spray the soapy water first on your intake boot where your carb was, and now where your tester is (if there’s a leak the soapy water will turn into a good amount of big bubbles) to make sure your pipe clamp is fully tight and no leaks there (also there is your reeds, the gasket around your reeds and intake boot can also go bad, that’s where my leak was), secondly spray at your exhaust plug to make sure that’s fully sealed, if neither places are leaking or showing any big sized bubbles, try your crank seal, and other areas where a gasket or seal is around your engine.

I wish you best of luck! But remember to compression test your blaster!