XR8 idle hunt (video)

[pete r]

Originally Posted by Ben

Would be a good idea to monitor whats going on with the MAF also. Mine went recently and would randomly throw up crazy numbers for a split second. In the workshop area there are some MAF numbers you should be seeing.

Also vac leaks are common and if the fuel trims improve with more throttle its a good chance. I found a home built smoke tester worked the best but there are a few methods(hose up to ear works good also). Make sure you check around the intake manifold, pcv valve(make sure its still secured in the grommet and sealing), and the hard plastic fittings around the coil pack area.

If you go down the smoke way I found disconnecting the brake booster vac and going straight to the manifold worked great.

Good luck.

Hey Ben how did you make make your smoke tester? I've tried the propane torch thing without any success. A mate said it could also be a cracked header upstream of the O2 sensor, buggered if I know how I'd find that, I'm 3 parts deaf and the exhaust note is pretty bold...

[Ben]

Originally Posted by pete r

Hey Ben how did you make make your smoke tester? I've tried the propane torch thing without any success. A mate said it could also be a cracked header upstream of the O2 sensor, buggered if I know how I'd find that, I'm 3 parts deaf and the exhaust note is pretty bold...

https://www.youtube.com/watch?v=Ai6QkF2Ez3A

Basically same setup as this. I disconnected the air pipe after the air cleaner and put a rubber glove with some tape over it to seal the system. Disconnected the vac hose at the brake booster and hooked into that hose(goes to manifold).

Worked well.

[pete r]

Originally Posted by Ben

https://www.youtube.com/watch?v=Ai6QkF2Ez3A

Basically same setup as this. I disconnected the air pipe after the air cleaner and put a rubber glove with some tape over it to seal the system. Disconnected the vac hose at the brake booster and hooked into that hose(goes to manifold).

Worked well.

Isn't that bloody brilliant???

Champion thanks Ben! IOU 🍻