revo 3.3 tune

[Revorunner]

Hi all again, I just got back off det to fallon nv and i didnt take my revo with me. I ran it when i got back and my throttle servo failed wide open. The truck ran full throttle into a fence and bogged down. By the time i got to it the truck had shut off and fried the glow plug. When i replaced the glow plug the engine just hasnt been right. I took the engine apart and it didnt fry the it but it seems like the engine is out of tune. It seems like it runs great when I'm on the throttle but when i let off it seems like the engine is a little flooded. I replaced the servo but it didnt help and it is idleing high. I tuned my low speed and I've been working on the high speed. Has anyone else had this happen to them and any suggestions?


p.s. I've done some work since the last pic. I've put emaxx tires on and a wing kit and beefed up the shox. Let me know what you think.

 

[LBSinGTX]

It seems like it runs great when I'm on the throttle but when i let off it seems like the engine is a little flooded. I replaced the servo but it didnt help and it is idleing high. I tuned my low speed and I've been working on the high speed. Has anyone else had this happen to them and any suggestions?

So when you let off the throttle, do the RPMs stay up high, or do they drop off like its about to die? If it stays high, your LSN is likely too lean, if it drops low, the LSN is likely too rich. Sounds like a tuning issue as long as you still have compression. You may also need to decrease the idle gap and re-tune. Hope that helps.

 

[Revorunner]

When I let off the rpm stays high

 

[LBSinGTX]

Try richening your LSN a little bit at a time. That should help as long as your HSN is tuned in.

 

[bobbyc1127]

try that first. but i had the same issue with my race 3.3 for sometime. and this past weekend the rear bearing failed. from what your describeing i had the same problems. so you may want to check into the rear bearing.