2006 Suzuki LT-R450
cherry bomb
pea shooter removed
air box lid removed
inline fual filter
had a full service on the bike and it's still doing the same as before !
bike is cutting out after it warms up on a ride
noticed the head pipe get s to glowing red hot is this
normal??? i removed the cherry bomb and the same thing
happens !!!!!! was told i need a power comandor ?????? Y

I dont know the whole LTR's trick. rivermobster or Baracudda should know.

They probably didn't change the swirl filter. $50 part and is a fuel filter behind the pet"daffyduckkk" that it should be replaced every year. Very common problem.

That was my first thought too(swirl filter). He said he has an inline fuel filter. That was a common mod to do away with the swirl filter. I'm thinking he may not have one??????

The bike will run lean without the cherry bomb. that will cause the headpipe to glow.
You do not need a power commander.
If it only cuts out after it warms up, it's prolly not the filter.
If your cherry bomb has went belly up it may cause the bike to run lean as well.
Describe the "cutting out", does it stumble and cough, or does it shut off??
Could be a fuel pump issue, related to heat. how does the plug look??

it stumble's and cough's.... so i just got a tow back to camp ... i also started it up in the garage with out the cherry bomd in it and the head pipe still was glowwing red thanks for all the input

How about the fuel filter?

Stator

Oh, and 4 stroke headers glow, no sweat

If it only does it after its warm, my limited knowledge would say its a valve clearance issue which may not be noticed on a generic full service????
If it does it all the time, I would check the F/P/R, then the fuel pump. Both can be checked with a fuel pressure guage.

Hey devan buy a honda gas and oil no problem

well yeah mike if you only ride to the glamis beach store and -------------- also i had valves checked out ok.... thanks to all with good info on thing's to check
DEVIN

Also, there is a tube running from the throttle body to the back left of the bike, under where your left butt cheek would be, then it plugs into a sensor. I forget what its purpose of the sensor is, but a lot of times the line gets pinched, clogged, or bent and will make the bike sputter. Its a thin vacuum line, and there have been a bunch of guys having that issue.
Check that, especially if you have had the seat and tank off.

Could be as simple as clogged fuel injectors. The first LTR450's were know for that to happen. I had an 06, now an 08, and my 06 did what your discribing. Happens because the gas sits around too long. You could try a little injector cleaner, or you might have to disassemble the whole thing and clean thoroughly. Just my .02.

MORE THINGS TO LOOK FOR THANKS GUYS

sell it and buy a new one boss

i really i like my quad

then it plugs into a sensor ( 10 go ) 100798-720 ?. what its purpose of the sensor is???, but a lot of times the line gets pinched, clogged, or bent and will make the bike sputter. Its a thin vacuum line, and there have been a bunch of guys having that issue. the line is clear dose anyone now what this line is .....You could try a little injector clean did that too put new gas in ( 91 ) oct.
the pipe is still glowing thank,s guys

COME ON GUYS I NEED SOME MORE SUGGESTIONS LET'S GET THIS THING FIXED

OK first off you HAVE to have the CRBM plugged in to default the map to the race map...otherwise you will run lean...so plug it back in. It is normal for the head pipe to glow BUT it glows less when you have a Power Commander...you will not need a PCIII until you get a aftermarket exhaust or intake...stock exhaust and stock intake are compatable with the CRBM.

When did you have the inline filter installed? There have been alot of problems with those...I know because I was one fo the first to try that act back in 06...I would either remove the filter media or take the inline filter out completely to check on that.

Did you check your swirl tank filter? They should be changed once a year. While you have the tank off you should just go ahead and change the spark plug too (once a year also)...

It sounds like a fuel delivery problem. I would also shoot some carb cleaner down the TB. Last thing to check would be the Throttle Position Sensor...they are known to go bad even though the voltage readings are in the ball park....rare but it does happen.

PM me if you don't have a manual and I'll get one over to you. Feel free to PM me...I'm pretty good with these bikes and a mod on the LTR forum so I can get some brain power together...

do the throttle bodies get dirty and make the the throttle stick? do they have idle air control valves?

If it runs well while warming up and then cuts out when hot, I'm still betting on stator or possibly vapor lock...

Maybe this will help.

FUEL FILTER
Inside the swirl tank (small reservoir attached to the petdaffyduck) there is a small fuel filter. This filter needs only to be replaced maybe every six months to a year if you run pump gas. But- with some race fuels, the filter needs to be changed frequently. Some race fuels will dissolve the filter. The symptoms of a bad filter are when the bike inexplicably starts to cut out. Usually in the air off of jumps with a chopped throttle.

If your LT-R starts to show these symptoms, go to your dealer and buy a few of the filters and the O-ring gasket for the swirl tank (just in case you break the original) and replace the filter. We recommend cleaning the fuel pressure regulator at this time as well.

FUEL PRESSURE REGULATOR ISSUES
If your LT-R becomes hard to start and is running poorly, for no apparent reason, often times it could be the Fuel Pressure Regulator. Or, if you’ve had fuel filter issues due to corrosive race gas, the units can become clogged from either debris or corrosion. The normal 42psi pressure can be reduced below 40psi, and things start to go bad. The unit can be cleaned by removing it from the quad, and cleaning with contact cleaner and. We also like to use an air hose to blow out any potential debris.

FUEL LINES
Keeping your fuel lines and water lines cool and protected will make the rubber last a lot longer by protecting it from the heat. The race team uses a heat wrap that is made by CV-4. It looks good and improves durability.

Sometimes dust gets through the stock filter and we have seen this happen...sticky butterly...



I gotta disagree with the vapor lock....42 psi with a return line...we have never seen this...or at least no one has ever written about it on the forum in the last 3 years...but anything is possible I guess...I also don't remember the last time I heard of a stator going bad...the batteries on these LTR's are pretty sensitive and they will stat to run like crap if the charge gets low...

OH snap...Gil, you may want to have that battery tested...we do go through alot of batteries on the forum...thanks for joggin my memory Eric...

FUEL FILTER
Inside the swirl tank (small reservoir attached to the petdaffyduck) there is a small fuel filter.
is theis a small flat filter about the size of a silver dollar????if so it has bee taken out
also have inline filter that has been changed too

filter. We recommend cleaning the fuel pressure regulator at this time as well.

FUEL PRESSURE REGULATOR ISSUES
running poorly after it warms up no race gas just 91 oct.
thanks is this regulator hard to get off it's on the right side ????

thanks devin

Gil, pull the inline filter out just for giggles and see if it runs any better...

The regulator is built into that fuel pump...no adjustment...they just go bad...but for running just pump gas it should be OK...they usually go bad from race fuel or some other corrosive stuff these nuts run in them...

had the battery charged and checked and thats seem to be the answer at this point.. i'm
going to have to take it out and run it some where before it go's to glamis for the season

thanks again for stepping up to the plate
you really find out who [b yr freinds are [/b]for sure good thing to know

Cool, new battery and run it, if the symptoms come back after a while of riding then check the stator. Sounds as if you are on the right track!

I'm guessing he fixed it...

or he lost his marbles trying I just have a feeling he'll be out in the dunes come oct/nov.

10 4 on that oct 9th weekend ??????

i run into the batt problem on my GP bikes I build, the problem is the ECU relies on the battery for power, the higher the RPM, the more the ECU has to monitor, the more power it needs, if a battery has a dead cell it wont let the ecu advance in its processes and will cut out. I have a pro SV650S running AMA superstreet that had this happen mid heat, everyone and their mother was telling me I just blew my engine, but it would idle fine go to 2,000-4,000 fine, it only failed in upper RPMS, turned out the dead cell in the battery was keeping the ecu from running through its parimeters, like stated the ecu draws more amps with the more throttle inputed. thats why also suggest not going to small batteries unless your going to shell out for one of the new ions or super gels.

it stumble's and cough'swhen it get's warm .... so i just got a tow back to camp

your still having problems???

yes !!!!!!!!!!!!!!!!!!!!!!!!!!! i am

yes !!!!!!!!!!!!!!!!!!!!!!!!!!! i am put in a new batt. and it's still broken

Your vent hose on the tank. Is it the stock long straw or is it one of those shortie ones with the billet tip. If its the shortie then its probably the BB in the tip got stuck. throw that POS away and go back to the long straw.

Im thinking like others said, either fuel cap issues or stator. thats what killed your battery before.

short one with the billet tip wow really !!!!!!!!!!!!!!!!!!!!! mmmmmmmmmm

No that's not it...your pump will pressurize the system and you have a return line...I highly doubt this is your problem...if you have changed out your battery and your SURE the swirl filter is brand new? Then I would start looking at your TB sensor...they do go bad and they are a nuisance...

Just a thought...have you checked your valve clearances?...6 for the intake and 8 for the exhaust...double check those before you start looking for a new TB sensor on Fleabay...

Sorry Gil...I just read you other thread...perhaps some mod would combine the 2?..lol...

OK at this point I would like to see you get a reading on your fuel pressure off your pump...get that and let me know what it is and we can go from there...

PS..I have 3 FREAKING LTR'S AND NOT ONE OF THEM HAS EVER GIVEN ME THESE KIND OF PROBLEMS...

OK rant off...lol...

mine is a 06 and has been great for a long time but now it's being a p.o.s.

I also have an 06, mine has given me 2 problems. 1) when I didn't change the swirl filter under the tank. 2) when the little BB got stuck in the vent line. Your fuel tank is not pressurized and some have said you can run the bike with the cap off. You do have a return line but as the fuel goes down you need to let air in the tank or it creates a vacuum. The fuel pump is a pusher pump not a puller pump.

I'm not saying this is definitly the problem, all I'm saying is it definitly could be the problem. At this point it is worth a try.

thanks guys i'll look in to that

ttt

Well? You get us some pressure readings?...

nope not yet but soon thanks alot

pressure reading at idie are 41

ttt

I am having this same problem with my Zuki...I have an 07.
The guy that is working on it is saying he thinks its my ECU...what do you guys think?