Hi there i have a 90 xr3i efi which is hard to start and struggles to idle.
All vaccum pipes checked with no leaks apparent. apart from the pipe that goes from the air intake halfway over the cam cover where does it go?
any ideas would be great.

Tony.,.,

 

If you mean the main feed pipe to the throttle body is leaking this will defo cause issues, and is very common problem, as is the fuel enrichement relay located in the kickpanel, a lot disconnect this as it richens the mix way too much, causing bad starting on some.
tabetha

 

thanks i,ll give it a go and get back to you!!