Throttle Body Sync vs Air Filter box removal
I have a throttle body sync issue. According to everything I have read on these forums, all I have to do is install longer tubes on my throttle body vacuum access tubes and from then on it's easy access for synchronization. According to my Haynes service manual synchronization can only be performed with the air filter housing removed.
Has anyone else seen this requirement?
The reason I ask is I have tried synchronizing the throttle bodies with no success. I am certain a synchronization issue is the problem I have. I have replaced plugs and the filter. I still have a bad running condition when in overdrive running around 70. It bucks, sputters and coughs like it is missing. As soon as you rev it, it is great. You do notice the problem in lower gears anytime the engine is around the 3500 rpm range. It's just more noticeable in overdrive.
I recently read on this forum that loose throttle body boots can cause this. I haven't checked that yet, but will as soon as I run the current tank full down where I can easily removed the tank again.