another trx 3.3 tuning question

[dracbec]

ok iam having a problem getting my t-maxx to idle runs great just off idle but after doing a run when letting off the throttle the motor wants to idle way up and stumble like detonation before it comes down and then it wants to stall i have went in and out with the lsn and it running between 235F to about 255F and is stronge at top end. also it wants to creep along when it does idle its just not consistent i have changed the plug and run also a gallon in it now

any help out there with this one?

cheers

 

[ajames942]

adjust the idle needle.

 

[dracbec]

ya i have done that aswell iam not new to nitro but it has been a couple years this thing has me stumped

 

[Rolex]

It's apparent that you have an air leak somewhere in the system. Start with new fuel and pressure lines, check the fuel tank lid seal. If you have the same problem, you'll need to silicone seal the back plate and carb neck.

 

[ajames942]

what i suggest, is turn the needles back to factory, both hsn and lsn, hsn-all the way in, four turns out, 1/4 turn in. and yout lsn should line up with the outside part.(look in the manual). and retune. make sure it not running over 250-260. and make sure you adjust ur throttle trim on the remote too.

 

[dracbec]

i was thinking an air leak aswell as for resetting to factory i have done that and it seems that it runs better going richer from factory thus possable air leak

yes/no?

i was also think about the pressure line maybe shorter or longer?

 

[dracbec]

well i took the motor out nd did a leak test on it and its leaking from the front bearing anyone change the bearing with good results?