1.3 CDTi / 1.3 Multijet running issues

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HuggyBidston

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Long post warning !

Hi folks,
I took on a project in the full knowledge that the vehicle didn't run properly , so only have myself to blame!

Vehicle - Fiat Panda 1.3 multijet diesel 2010, 100k mileage, full service history.

Issue - vehicle struggles to start and when it does it cuts out almost instantly. It will eventually tickover but it smokes grey out of the exhaust and is very reluctant to rev , it misses badly. Any attempt to drive the vehicle and it stalls.When the car reaches temperature it stops smoking and will move , but is massively down on power, far more than limp mode would be. The engine sounds sweet as a nut , just completely gutless.

What I (and the previous owner) have changed tried to date:
MAF
MAP
Cam sensor
Turbo (brand new)
EGR (brand new)
Previous owner removed cat to check for blockages
Wiring checked as much as possible
Air intake checked for blockages and whole intake system swapped with an identical vehicle (see below)
Fuel filter housing swapped with identical vehicle
Fresh fuel added
Fuel rail switch swapped with identical vehicle


So far nothing I have done makes any difference . There are no fault codes and live data seems with my limited knowledge to be in acceptable parameters , but very happy for someone else to tell me otherwise.

I have an identical model Panda as a donor vehicle for parts swapping if required , but I still can't make sense of it ☹️.

Any genius ideas ? (please)
 
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I’d be surprised if this engine made 100k without needing a new timing chain and tensioners......maybe yours has jumped a tooth or two?
John :)
 
Thanks , yeah that had occured, but why would it run sweet when hot (other than lack of power) , but not when cold ? That's what's got me confused
 
I wish I could answer that one unless it’s to do with the injection pump advance and ******, but you’ve done all of the suspect work!
I’d check the timing marks if you can (you tube should help here) and then head for a Bosch diesel specialist....don’t spend more money on it just now.
John :)
 
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It is/was. It was replaced 3 months prior to me purchasing the car. What I didn't know until I ripped it sort was that they changed the valve but not the solenoid! Two blanking plates later and it goes like the clappers :cool:
 
Obviously it was stuck fully open then! Ghastly things but they do reduce pollution and your MOT test shouldn’t be affected - as far as I’m aware.
John :)
 
Thanks for the update Huggy. Your solution may help many others.

What's also interesting is that John (Burnerman) doesn't expect the timing chain system to last much longer than 100k miles.
 
I think I got that gem of information from Autodata but of course regular oil changes probably have a lot to do with it.....happily the chains don't snap but stretch and become noisy as the tensioners can't cope. After that, the crank and cam sensors go out of phase so the darn thing won't start :eek:
Many small engines use a simplex timing chain - a duplex set up or Hyvo is supposed to be longer lasting. I don't have any experience with this motor but a few Nissans have come my way.....Micra's and the bigger saloon, discontinued now.
John :)
 
The chains are synonymous with stretching and not lasting the life of the vehicle. Thankfully , on this vehicle there isn't a hint of 'chatter' so I'm quite happy with it and it's done 108k . The car has FSH so as you say , regular oil changes have a huge impact on longevity.
 
I've never personally dealt with a snapped chain......I have witnessed the result though, the chain wound itself into a ball and came out through the timing cover :eek:
I would have expected loads of rattles before it got to that stage!
John :)
 
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