Technical Dead Engine? Need help

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Technical Dead Engine? Need help

Poond

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Dec 13, 2021
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Hi All

First visit here. I have a 2001 motorhome with the 2 8 jtd turbo engine.
Tried starting it after leaving it for about 6 weeks but needed a jump start. It started but was squeeling a bit. Did not over rev it but after about 20 seconds rubber smelling smoke came from engine bay. I switched off but would not start again. Sounds like it was turning over but when I looked at the aux belt did not look as if it had moved again. First thoughts are I have shredded the timing belt maybe due to a seized water pulley or tensioner. What do you think All? All help appreciated.
 
Hi

From what you describe it sounds like the toothed timing belt is OK (engine runs) but something driven by the aux belt has seized (drive pulley turning against seized belt causing squealing and smoke). Best bet might be to remove or at least slacken the aux belt and try turning each driven item by hand to see what's tight/seized. I'm not sure how the belt is tensioned, someone else may have more detail.
 
Hi

From what you describe it sounds like the toothed timing belt is OK (engine runs) but something driven by the aux belt has seized (drive pulley turning against seized belt causing squealing and smoke). Best bet might be to remove or at least slacken the aux belt and try turning each driven item by hand to see what's tight/seized. I'm not sure how the belt is tensioned, someone else may have more detail.
 
Hi, thanks that sounds at least promising. I have not dismantled anything to see the timing belt but when I pushed on the aux belt it was rock solid and no play at all. It looked like one of the the v ribs may be a bit worn/mangled so perhaps that is the case. Would it just refused to start when too much tension on the crank pulley if indeed one of the other aux pulleys has seized?
 
Hi,

Welcome to the forum.

Does your vehicle have airconditioning? If yes, then there will be a belt for the aircon copmpressor, and the basic belt for the alternator and water pump. You have not mentioned two belts, so I will assume no aircon.

It seems probable that if either the water pump or the alternator was seized when the engine was started, the auxilliary drive belt was overheated as evidenced by the smoke, smell, and noise. Again it is possible that deposits from the overheated belt increased the friction between the crankshaft pulley, and belt on your second attempt at starting (as you suggest). Also you say that the engine required jump starting, which is not perhaps, a good idea with a motorhome. The vehicle battery not have gained any significant charge prior to your second attempt at starting.

The alternator/water pump drive belt is tensioned via the alternator, but the alternator is not that easy to get at.

I suspect that your major concern is for the integrity of the engine. Perhapd the best way of checking this is by turning the engine over clockwise by hand, for at least two complete revolutions. To do this you will need a 36mm socket for the crankshaft pulley. A short length of suitable steel tubing to extend the socket handle makes for easier work. Access is by removing the engine bottom cover. This cover also shrouds the alternator pulley., at least it does on my x244 version, but yours will be the earlier pre facelift x230 version. (By way of explanation x244, and x230 relate to the VIN number format. Yours will have the format xxx230nnnnnnn.

As you have not said whether the vehicle is at your home and that you can work on it, I will not add further information at this time.
 
Poond,
From your opening post stating a squeal was first heard suggests to me a belt not running on grooved pulleys was slipping and therefore I would say that because the engine started and continued to run then if it was a timing belt issue the engine would not continue to run and quickly stop. Maybe the temp' in Scotland was low enough to freeze the coolant pump, doubtful if you have antifreeze in the engine.
I once found my aircon belt in the engine under cover after the pulley had bust and spat it off, no noise though.

Ducato 2.8JTD Aircon belt tensioning pulley.jpg

So, does your Ducato have Aircon and any lights on the dashboard to suggest a none charging/siezed alternator?

:cool:
 
Found the post, if it helps anyone........Aircon belt pulley.


:cool:
 
Hi All

First visit here. I have a 2001 motorhome with the 2 8 jtd turbo engine.
Tried starting it after leaving it for about 6 weeks but needed a jump start. It started but was squeeling a bit. Did not over rev it but after about 20 seconds rubber smelling smoke came from engine bay. I switched off but would not start again. Sounds like it was turning over but when I looked at the aux belt did not look as if it had moved again. First thoughts are I have shredded the timing belt maybe due to a seized water pulley or tensioner. What do you think All? All help appreciated.
Okay , well i have an x230 , year 2000 . Now first off mine is a idtd , direct injection 2.8 . If yours is a jtd , it will be different , your have a ecu . Mine doesn't .
Now with that said , first off the batteries flat , this leads me to think it is actually a jtd , because this will happen . We have two ecu equipped vehicles here , and if either are left for more than 2 weeks , they will not start . We also have 2 none ecu equipped vehicles , and these can be left for 6 months or more , and will still start .
Anyway this is the reason you van will now not start . You didn't run the engine long enough to charge the battery enough for a second start , but i think it more likely the belt was not turning the alternator anyway . However , you don't mention a battery warning light , which is a bit confusing .

You say your fan belt is shredded , could be it's too tight , but i also would advise checking the pulley's . If i remember correctly the jtd water pump is driven from the timing belt , but i know the idtd is driven from the fan belt . I've just replaced mine , along with the water pump , and would you believe the alternator . The only pulley you won't be able to turn is the lower crank , but frankly i doubt there's a problem there , as the van started . If that was seized you would have far bigger problems . I would certainly check your alternator pulley , that may be seized . You said your belt was rock solid , if it was too tight , it may have bent the rotator shaft inside the alternator itself . Yes , it's possible , but again i doubt it . I think , it's more likely your belt was knackered in the first place .

The fan belt adjuster is above the alternator , and on mine it was seized solid . Not really a problem for me as i had to remove it anyway , to replace the water pump . First off you will need to loosen the lower alternator mounting bolt . Don't remove it , just loosen . This can just about be done from the off side wheel arch , though you may find it easier to remove the wheel . Next you will need to loosen the top mounting , this is actually attached to the tensioner , i did mine from under the vehicle , but it is a stretch . I would strongly advise refitting the wheel for this . Now underneath the van , you will notice a bolt staring at you in line with the fan belt (you will probably need a light) above the alternator , that is the adjuster bolt . The top mounting is set in the same orientation as the lower bolt , behind this bolt , again loosen , do not remove . Now you need to wind that adjuster bolt in to loosen the fan belt tension , i think i used a 13mm socket . It can be done with a spanner , but it a long job . If the belly pan is missing , you will find the alternator stiff , even seized , grab hold of the thing and swing on it , until if moves forward . You can use a lubricant , just be careful of the wires coming out of the back , especially the smaller d+ wire , closest to the engine . Once moving , the fan belt will loosen enough to be removed . Mine was not the standard van fitting , if as i suspect yours is a jtd the belt will be different again .

If you need to remove the adjuster look at where it touches the water pump , there is one mounting , a nut attached to a stud mounted into the water pump .
 
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