Air Blowing Out of Throttle Body

[TachPHD]

Hey Everybody,What are the other possible reasons for air being blown back out of the throttle body, if I've already replaced the ECU and CAS, and redid timing?

[mello88]

What do you mean air is blown back out of the TB? When does this happen and how do you know it's happening? Have you done a leakdown test to check that your intake valves are sealing?

I had a problem with my stock TB, the shaft seal was shot, so it would leak from under the TPS under boost.... Somehow I don't think this is what you're asking about...

[Coolwhip]

+1 Leak down test the engine see if the intake valves are sealing correctly.

[Bwana]

Let's try to get the car up to my shop tomorrow man and we'll figure this out. Somehow I'm still thinking cam timing is the culprit...

[Coolwhip]

Bad wiring will make it sound like cam timing, when its wired wrong and the coils are firing all at once or at the wrong time, seen it all too many times.

[Bwana]

Thing is, this is a freshly rebuilt engine that ran for a year in this car with this harness before the rebuild... It also ran after the rebuild until the front end came apart to replace a leaking water pump, since then nothing... I just need to get it up to the shop so I can have a good look at it.

[Joe]

after reading the last post, the cam timing is wrong

[OpeLok]

off a tooth