Notices
944 Turbo and Turbo-S Forum 1982-1991
Sponsored by:
Sponsored by: Clore Automotive

rough idle, popping in exhaust

Thread Tools
 
Search this Thread
 
Old 07-19-2011, 09:08 AM
  #1  
Stephencs601
Rennlist Member
Thread Starter
 
Stephencs601's Avatar
 
Join Date: May 2007
Location: The Long Island
Posts: 2,260
Likes: 0
Received 35 Likes on 30 Posts
Default rough idle, popping in exhaust

Let me explain what was done. We put an upgraded turbo in. k26/8 upgraded with a garrett case and inners, set up for 350+rwhp. Installed the Mtune kit with 72lb injectors and 3" down pipe. Prior to this, have a 4" exhaust, lindsey wastegate with adjustment ****, 3 bar regulator, and a refreshed motor with upgraded head gasket.

Here is what happened. Car ran fine as I was told. Took it out, boosted it up, boost went up and inter cooler pipe popped off. Put the pipe back on, took car out, started to run rough again, other side of inter cooler popped off. Now the car runs rough, idles hign 1500rpm and is erratic. Also, now have popping in the exhaust from, I believe; unburned fuel. We now do not have any boost control either.

Vacuum Leak?
Bad Injectors,
Gremlins?

Shop will do a smoke test today for vacuum leaks.

Any thoughts.
Old 07-19-2011, 09:36 AM
  #2  
Paulyy
Professional Hoon
Rennlist Member
 
Paulyy's Avatar
 
Join Date: Jan 2010
Location: Melbourne, Australia
Posts: 7,090
Likes: 0
Received 4 Likes on 4 Posts
Default

first id check vaccum lines.
Old 07-19-2011, 12:48 PM
  #3  
Stephencs601
Rennlist Member
Thread Starter
 
Stephencs601's Avatar
 
Join Date: May 2007
Location: The Long Island
Posts: 2,260
Likes: 0
Received 35 Likes on 30 Posts
Default

Well it was a vacuum line. We will put clamps on all lines and replacing inter cooler couplers. WWWhhoo, close call.
Old 07-19-2011, 04:04 PM
  #4  
Paulyy
Professional Hoon
Rennlist Member
 
Paulyy's Avatar
 
Join Date: Jan 2010
Location: Melbourne, Australia
Posts: 7,090
Likes: 0
Received 4 Likes on 4 Posts
Default

glad it was something simple. good luck with your engine!



Quick Reply: rough idle, popping in exhaust



All times are GMT -3. The time now is 12:27 AM.