Thread: P1247 and restricted performance - advice please.

my guess off the cuff...

*yes it looks like the o-ring on the intake Y piece is leaking, generally not as bad as yours so maybe the o-ring has split.
*split top turbo hose (2.7 or 3.0)
*split inlet manifold (but your engine cover looks clean)
*turbo boost solenoid hose leak (front right of engine, when standing in front of it) 2 solenoids on top of the front plastic timing cover, look for any split hoses or hoses that have gone squishy and popped off.
*more small hoses, go left towards the centre of the engine under and just left of the top coolant pipe there are more rubber hoses, again look for split or squishy ones.
*follow all the plastic hoses that run over the Y intake and at the back on the drivers side there are more small rubber hoses, again look for a split one or i think there is a plastic T piece that I have had split.

By that picture you’ve got a split throttle body. The plastic splits between where the y is glued to the throttle main section. I’ve had this happen.

Pull it out and confirm it first before you purchase one

Originally Posted by DiscoJeffster

By that picture you’ve got a split throttle body. The plastic splits between where the y is glued to the throttle main section. I’ve had this happen.

Pull it out and confirm it first before you purchase one

Sorry no. Second picture looks like the o-ring has failed on the end of the throttle body.

Originally Posted by DazzaTD5

my guess off the cuff...

*yes it looks like the o-ring on the intake Y piece is leaking, generally not as bad as yours so maybe the o-ring has split.
*split top turbo hose (2.7 or 3.0)
*split inlet manifold (but your engine cover looks clean)
*turbo boost solenoid hose leak (front right of engine, when standing in front of it) 2 solenoids on top of the front plastic timing cover, look for any split hoses or hoses that have gone squishy and popped off.
*more small hoses, go left towards the centre of the engine under and just left of the top coolant pipe there are more rubber hoses, again look for split or squishy ones.
*follow all the plastic hoses that run over the Y intake and at the back on the drivers side there are more small rubber hoses, again look for a split one or i think there is a plastic T piece that I have had split.

Thanks Dazza: I'll have a look at all the suggested hoses and report back for everyone's benefit. Agree - the engine cover and a superficial look at where the muck is 'tends' to steer me away from a split manifold...

Originally Posted by DiscoJeffster

Sorry no. Second picture looks like the o-ring has failed on the end of the throttle body.

Cheers mate - will have a dig around - is the work needed to confirm or deny the split o-ring something relatively easy as a DIY mechanic? I'm confident with things mechanical, but can't find any youtube vids to walk me through before I have a go... Presumably from the comments it's going to be taking the throttle body off and checking everything?

Originally Posted by Jpdv

Cheers mate - will have a dig around - is the work needed to confirm or deny the split o-ring something relatively easy as a DIY mechanic? I'm confident with things mechanical, but can't find any youtube vids to walk me through before I have a go... Presumably from the comments it's going to be taking the throttle body off and checking everything?

Intercooler hose off the front section. 10mm bolt that hold the front piece (intake duct) in place. Remove plugs etc. Then pull up the metal clip to take that off. Another 10mm on the top of the throttle body keeps that in place. A few more connectors then I think it’ll just come out with a wiggle. Get three new o-rings.
Check if there Y is firmly attached to the main section of the throttle body.


Part numbers

1316152 - throttle body outlet x 2

LR008353 - throttle body inlet x 1

Originally Posted by DazzaTD5

(front right of engine, when standing in front of it)

What's all this ? Front right of engine when standing in front of it, looking back towards the back of the car, standing the right way up, on both legs with both eyes open , hands by sides, blah blah!

C'mon Dazza, they need to learn.....Front left of engine.

Originally Posted by discorevy

What's all this ? Front right of engine when standing in front of it, looking back towards the back of the car, standing the right way up, on both legs with both eyes open , hands by sides, blah blah!

C'mon Dazza, they need to learn.....Front left of engine.

But is that front left when facing perpendicular to the inmost side of the leak, or underneath?

If only there were rules governing left and right...