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#31 | |||
Starter Motor
Join Date: Jul 2024
Posts: 22
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Quote:
Regarding the timing, it was fine before i started working on the intake manifold. i can't see how the intake manifold and injector removable can offset the timing. If it is a timing chain issue, then it's an amazing coincidence a bad chain causing to mess up the timing on the next start after. But hey..... those odds of such a coincidence to happen to me is likely. I am that cursed. By the way, if timing was off, surely i would get a number of codes. But i will check it out anyway and thanks for your tips. Last edited by JustBill; 05-08-2024 at 10:25 AM. |
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#32 | ||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 21,764
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Slight mistiming generally gives a cam sensor fault, leading the novice to replace that sensor.
Testing for firing with another fuel (or even a splash of diesel into the intake) is a good way to see if the mechanical aspects of a motor are sound. |
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#33 | |||
Starter Motor
Join Date: Jul 2024
Posts: 22
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Quote:
Still not getting the full 12v power into the sensor which is strange but getting the 5v from the signal wire which is supposed to. To verify timing, i will check and lineup flywheel with the pinning hole. If i do that, would i also need to remove the timing belt cover and check that the camshaft and crank all lineup aswell? So it's virtually doing a timing belt change without placing a new belt? |
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#34 | ||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 21,764
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It’s not a two minute exercise, no. Less effort than changing the belt, though.
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#35 | |||
Thailand Specials
Join Date: Aug 2009
Location: Centrefold Lounge
Posts: 49,001
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Quote:
It also used to kill them every 12 months until I MacGyvered in a massive DIN85L sized battery. You got a battery charger? Put it on the car overnight and then try start in the morning and see how you go. Also check condition of main earth cable, on the Focus its on the passenger side shock tower, unsure on Mondeo but could be similar as they share a platform. |
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#36 | |||
Starter Motor
Join Date: Jul 2024
Posts: 22
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Quote:
I'm starting to believe i have a timing issue which i'm going to need a new belt. **** me how did i get myself in this mess. Just learnt from Alan Howatt in one of his videos, that the high pressure fuel pump needs to ne timed also with the power train timing. If the timing is out with the fuel pump you don't get the injector spray in sinc. Maybe that was the original cause of loss in power. Last edited by JustBill; 05-08-2024 at 08:58 PM. |
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#37 | |||
Thailand Specials
Join Date: Aug 2009
Location: Centrefold Lounge
Posts: 49,001
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Quote:
![]() They needed to get some specialist in to get the snapped thread out of the crankshaft, which took him all day. Be prepared for a fun* time *will not be the usual definition of fun If you got good quality jumper leads, get another car onto it, but go to the negative terminal on the Mondeo, not the Mondeo body earth as its not big enough to get enough current through to turn over diesel engine fast enough to get it to fire. If its like the Focus its a pain in the *** because the negative terminal sits under the wiper cowl, might need to take off the wiper cowl to get enough clearance. How good are European cars? |
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#38 | |||
Starter Motor
Join Date: Jul 2024
Posts: 22
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Quote:
Re timing, i'm just going to check if the timing is ok and adjust it if need then retention the same belt, thats if the belt is one piece. So i wont need to unbolt the balancer pully. Last edited by JustBill; 05-08-2024 at 10:42 PM. |
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#39 | ||
Starter Motor
Join Date: Jul 2024
Posts: 22
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Update:
* I opened the timing case and found the belt intact. * Then i checked if the timing was accurate. * Locked the flywheel through the hole behind the starter motor. It definitely went in as the crank wheel could not spin (due to the pin locking the fly wheel) * Checked if the hole on the cam cogl lined up with the hole on the back which is about 4 o'clock. Low and behold..... the hole on the cam cog was facing 2'oclock * Removed the belt from the cam cog, with the fly wheel locked into place, turned that cam cog from 2 o'clock to 4 o'clock where the 2 holes lined up so i can put the bolt through it. *then put the timing belt on. Now going to put the pieces back together again and see how it goes. Question... How is it possible for the timing to go off with the belt not snapped and still teath on the belt? Why i ask is can it happen again. |
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#40 | ||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 21,764
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The crank sprocket is “slip and grip” (my description, not the official term). It relies on that massive torque of the centre bolt to provide clamping force that holds the sprocket in position. When you’re breaking or tightening this bolt, it’s necessary to use a counterholding tool - not to rely on the crank timing rod for you use for checking.
Perhaps the bolt wasn’t tight enough and that’s how you slowly got out of time. |
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#41 | |||
Thailand Specials
Join Date: Aug 2009
Location: Centrefold Lounge
Posts: 49,001
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Quote:
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#42 | |||
Starter Motor
Join Date: Jul 2024
Posts: 22
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Quote:
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#43 | ||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 21,764
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On the positive side, it sounds like you’ve possibly diagnosed the root cause.
If the crank is located and locked correctly per the pin in rear of flywheel, and your belt driven cam is correctly timed, it doesn’t matter where the lower sprocket and belt are when you tighten the centre bolt. It’s just got to be insanely tight. Peugeot say 70Nm +60°, it’s a single use bolt. Use the old one to make a chasing tool and clean the crank nose threads. |
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#44 | |||
Starter Motor
Join Date: Jul 2024
Posts: 22
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Quote:
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#45 | ||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 21,764
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You’re too kind. I try to help when I can see someone is making a serious effort themselves.
Hopefully you’re close to a solution, counterholding the ring gear while you lock that bolt down super tight, will be a decent challenge. |
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#46 | ||
Starter Motor
Join Date: Jul 2024
Posts: 22
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I will do it in reverse to when i loosened the bolt. Used the breaker bar and added a 1 meter steel pole as an extension then used both arms to lift. I will also add thread loctite glue to the bolt. Then good luck to anyone needing to take it off again in future.
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#48 | ||
FF.Com.Au Hardcore
Join Date: Oct 2005
Location: Auckland, NZ
Posts: 1,258
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I've just caught up with this thread... Hope you get it sorted. Does the service history show whether the cambelt has been replaced recently?
Sent from my SM-S906E using Tapatalk
__________________
MB Mondeo TDCi wagon, sea grey, on MAK Invidia 16" wheels. |
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#49 | |||
Starter Motor
Join Date: Jul 2024
Posts: 22
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Quote:
I've sorted the timing and closed it all up then crossed my fingers. Still won't start. So i've taken it to a fourth mechanic. Now he tells me something completely different from the other 3. It's the worst case off all. He said the engine is knackered. He said no compression when turning over. Although, i'm no mechanic but i don't believe him. Because without he giving me specifics why the engine is gone, A) the crank wheel spins therefore isn't seized, B) When the cam wheel spins you can hear the suction sound i assume the piston make and i can feel the tightness then release together with the suction sound when spun at particular points. If he is right..... Then i hope its just the rockers are damaged because i'm confident in changing them myself. Apparently the engines on these Mondeo's are designed for the rockers to give way so the pistons survive if a timing belts or chain snaps. This has became a nightmare now. I've gone so far (New timing belt + tensioner, Injector seals, intake seals and intake holes cleaned, new transmission fluid and filter, new engine oil and filter, injectors tested and cleaned, new leek off pipe) and am stuffed to know if i should just stop and scrap it or keep fighting. I'm interested to know if my description as to why i feel the engine is fine and that i could be right or wrong. Big job getting to the rockers then only to find out nothing wrong with the rockers and tappets. Last edited by JustBill; Today at 05:44 PM. |
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