Poor idling when warm

The most likley cause is the in let maifold gaskit or posibly a vacume pipe , the manifold gaskits offten leak normaly cyl 1 or 4 When you squase the fuel line it puts in moor fuel to make up for the air leak. Regards Roger

Ok, thanks Roger, I'll try that first. :thumbs_up:

One way to confirm an air-leak is to unplug the electric connection to the MAF sensor, then run the engine. If the idle is smooth, you have diagnosed an air leak. Then all you need do is find it.......... Spray around suspect areas, injectors, manifold gasket etc with carb cleaner. The cleaner will temporarily seal the leak & idle will smooth out for a few seconds. I had an air leak on my 480 Turbo. Got so bad it would not run at all. Unplugged the MAF and it ticked over like a smooth thing. Went hunting and found the the turbo intake hose had perished and had completly separated from the intake on the engine LOL!

Thanks for the tips guys, it is defo an air leak on the inlet gasket on cyl. 4