147 JTD problems
Discussion
Just bought a (cheap!) 147 JTD Lusso on a 53 plate - as far as I'm aware it's an 8v 115BHP one
It's main problem seem to be that it has no boost at all! When revving the engine it wont run past 3000rpm, whereby it coughs and stumbles.
I have removed the air intake pipe at the inlet manifold, and the engine then revs cleanly enough, if a bit sluggishly.
When it is connected, the inlet pipe gets crushed when the engine is revved, which I wouldn't imagine to be right, as it should be pressured on a turbo.
The car revs better with the pipe disconnected in various places through the intake system all the way up to the turbo itself, so the intercooler wouldnt appear to be blocked. I have taken the air filter out, which was heavily deformed due to the air being sucked through it, rather than blown through.
This set of symptoms point to some sort of turbo problem to me, but I have also seen talk of a variable vane controller, which I imagine is the actuator type thing hanging off the turbo.
I've disconnected the MAF, which has made it rev more freely, but it won't rev past 3250 RPM at all - clouds of smoke and starts to miss and stumble. Also check all the vacuum pipes that I can see, which seem fine.
I'm diagnosing solo at the moment, so can't see if it moves up and down or not!
Also, the fuel pump seems to make a strange noise, like it's running dry - doesn't do it all the time , but doesn't not do it for long if you see what I mean!
Next plan is to get the turbo off and see if it's knackered or not I guess - any other ideas worth trying?
Many thanks for any input.
It's main problem seem to be that it has no boost at all! When revving the engine it wont run past 3000rpm, whereby it coughs and stumbles.
I have removed the air intake pipe at the inlet manifold, and the engine then revs cleanly enough, if a bit sluggishly.
When it is connected, the inlet pipe gets crushed when the engine is revved, which I wouldn't imagine to be right, as it should be pressured on a turbo.
The car revs better with the pipe disconnected in various places through the intake system all the way up to the turbo itself, so the intercooler wouldnt appear to be blocked. I have taken the air filter out, which was heavily deformed due to the air being sucked through it, rather than blown through.
This set of symptoms point to some sort of turbo problem to me, but I have also seen talk of a variable vane controller, which I imagine is the actuator type thing hanging off the turbo.
I've disconnected the MAF, which has made it rev more freely, but it won't rev past 3250 RPM at all - clouds of smoke and starts to miss and stumble. Also check all the vacuum pipes that I can see, which seem fine.
I'm diagnosing solo at the moment, so can't see if it moves up and down or not!
Also, the fuel pump seems to make a strange noise, like it's running dry - doesn't do it all the time , but doesn't not do it for long if you see what I mean!
Next plan is to get the turbo off and see if it's knackered or not I guess - any other ideas worth trying?
Many thanks for any input.
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