Hi,

I am having some trouble with the hyper 7 .28 mach engine. When the car is stationary the engine can suddenly making a loud prolonged (almost defaning!) noise and start moving forward by itself. Do you know what might be causing this?

Thanks

have you checked the fuel line for pinholes?

Thanks, ordered some new tube. How do i know when the LSN is fully tuned?

its not the fuel tube ur lsn r hsn is to lean i had same problem richen ur fuel mixture only lean to the point car stay stationary with out un helthy whining and stop as perfromence gets less.

I think the HSN may be too lean so ill change that. There is still lots of smoke coming out when accelerating so can i lean the LSN a bit more? I did see air bubbles at times when the car started to scream really loud when stationary so i'll change the tubes just incase