Login   
C6owners :: Forums :: C6 Support :: Introduce yourself

Head gasket saga begun .!!

Home   Forum Rules    Forum Help  Conversion Tools
   
Please Register to enjoy additional Member Benefits
Top Thanked Forum Posts: Today | Week | Month | Year | All time | Most Thanks Given: To member | By user
Author Post
sidenham   
Fri Jul 03 2020, 01:39pm
Joined: Jul 23 2019
Member No: #3993
Location: St Marys Bay, Kent.
No it's still shows a constant 5v on pin 1 . Only returns to 0 once the ignition is switched off and all the clicking stops. Unable to take a reading with the sensor out of the manifold for fear of flooding the engine with diesel.
MGmike   
Fri Jul 03 2020, 04:48pm
Joined: May 21 2017
Member No: #3151
Location: South Queensferry
If you assume there's pressure in the rail left over from the last start attempt, you need to find a way to check the sensor with no pressure to be sure it's faulty. If it is faulty you're going to have to remove it to replace it anyway! Place rags under it and crack it open slowly, I don't think there'll be too much come out as the HP pump won't be moving any new diesel until you turn the engine over.
sidenham   
Fri Jul 03 2020, 06:26pm
Joined: Jul 23 2019
Member No: #3993
Location: St Marys Bay, Kent.
I've tested the sensor out of the fuel rail with another duff one in its place so no fuel leakage. Still shows 5v on pin 1 blue and on pin 3 orange. No drop in voltage until ignition is switched off. If this is a duff brand new sensor that cost a packet me thinks some fur will fly. That will be two new sensors in the space of two weeks.

The last one has a full years Guarantee so that will be on it's way back should it be at fault. Im hoping it not the problem and it just a wire that's being silly.
1 User said Thank You to sidenham for this Post :
 cruiserphil (06 July 2020)
MGmike   
Fri Jul 03 2020, 08:05pm
Joined: May 21 2017
Member No: #3151
Location: South Queensferry
Sounds like it's goosed! The signal voltage should have swung to it's lowest point to indicate a low fuel pressure. Guess you'll need to find a good one to compare operations.
1 User said Thank You to MGmike for this Post :
 cruiserphil (06 July 2020)
sidenham   
Wed Jul 08 2020, 06:52pm
Joined: Jul 23 2019
Member No: #3993
Location: St Marys Bay, Kent.
Ok replaced the sensor, but thought i'd have a good look at everything fuel related. glad I did because the blead off return pipe back through cooler had broken away from red plug base. Took it all apart, AGAIN, repaired it all AGAIN.

Now I have to say this and feel stupid about what I've done, and that is as follows.

When I checked and re-tensioned the pump belt I turned the cam belt nut without making absolutely certain that nothing else would move, I had a feeling that the belt had jumped a notch. Thought nothing of it because its the pump belt.

Wrong the belt that had jumped a notch would appear to have been the main timing belt. And how do I know this Because she is running like she's only firing on five but all six are operating without that smooth feel six has.

I'm having to isolate for the next two weeks, surgery due, but that will give me something to do during this period. Did I mention this was a SAGA.
1 User said Thank You to sidenham for this Post :
 321dave (09 July 2020)
MGmike   
Wed Jul 08 2020, 09:17pm
Joined: May 21 2017
Member No: #3151
Location: South Queensferry
So, was the sensor faulty? Did you measure the output voltages on the new one to see if it delivered the voltages we think were expected?
Okay, we've all that moment at some point and I hope you don't skin too many knuckles before you head to the operating table

Good luck with the hospital visit and we'll be eagerly awaiting the post op C6 saga instalment
1 User said Thank You to MGmike for this Post :
 sidenham (10 July 2020)
321dave   
Thu Jul 09 2020, 11:42am
Joined: Sep 09 2011
Member No: #614
Location: Dublin
MGmike wrote ...

So, was the sensor faulty? Did you measure the output voltages on the new one to see if it delivered the voltages we think were expected?
Okay, we've all that moment at some point and I hope you don't skin too many knuckles before you head to the operating table

Good luck with the hospital visit and we'll be eagerly awaiting the post op C6 saga instalment



Just to say I’m taking notes at the moment, because I’ll be headin this way soon. I’m getting a bit nervous about the fuel lines and pipes/tubes in the engine bay! Best to do a good check and see if anything’s getting bad. I still have the memory of buying spares from a breaking C6 that burned out from the front and stopped at the end of the windscreen!!
1 User said Thank You to 321dave for this Post :
 sidenham (10 July 2020)
sidenham   
Sat Jul 11 2020, 04:12pm
Joined: Jul 23 2019
Member No: #3993
Location: St Marys Bay, Kent.
Yes Mike the sensor was faulty, new one checked out fine. And dave, what I did to get over the vacuum pipes that had become brittle was to replace them with copper brake pipes. Just added a 1-2mm ring of solder at 10mm along from the end to get a better seal using short 4mm internal corded hose as a coupling. Works fine.

Car is now on stands at the front again all ready for me to remove the engine under trays. Then remove the rear CAT to gain access AGAIN to the flywheel locking pins hole. Remove the belt covers and find out which cam has let the belt slip one notch. Suspect it to be the rear bank after the tensioner. New water pump, both belts + iddlers and a new tensioner. This time I'm leaving Nothing to chance, I want this Saga OVER.
1 User said Thank You to sidenham for this Post :
 C6Dave (11 July 2020)
MGmike   
Sat Jul 11 2020, 05:41pm
Joined: May 21 2017
Member No: #3151
Location: South Queensferry
thanks for confirming. Did you get a warranty replacement?
You do realise that once this saga is over there'll be another one waiting to bite you on the bum
sidenham   
Sat Jul 11 2020, 08:50pm
Joined: Jul 23 2019
Member No: #3993
Location: St Marys Bay, Kent.
I wouldn't bank on it Mike, I've probably fixed ever [%*^#@!] thing that could ever go wrong with it. And a few that have been done more than once, just to make sure they know their fixed. I'm absolutlly certain this car has a warped sense of humour. Because ever time I finish doing one thing something else cleverly goes wrong. We will see after I've done the belts. I'm putting new brakes and rubber shoes on all round as well. The car has been fighting me all the way BUT I think I'm winning.
2 User said Thank You to sidenham for this Post :
 cruiserphil (13 July 2020) , 321dave (15 July 2020)
David Hallworth   
Tue Jul 14 2020, 03:22pm

Joined: Apr 16 2010
Member No: #90
Location: Glasgow
If it's a diesel, you don't need to remove a cat to pin the flywheel. If you unclamp the flexi nearest the gearbox side you can get your arm up there to peg it.

That's how I got mine anyway

David.
3 User said Thank You to David Hallworth for this Post :
 C6Dave (14 July 2020) , cruiserphil (15 July 2020) , 321dave (15 July 2020)
sidenham   
Sat Jul 18 2020, 09:47am
Joined: Jul 23 2019
Member No: #3993
Location: St Marys Bay, Kent.
I was thinking about that David, and will defo try that, taking of the rear CAT is a pain and getting that locking pin in without removing it is most welcome Thanks. . It's now Saturday 18th and I'm feeling in a much better mood after West Ham beat Watford 3-1 and have probably done enough to stay in the Premiership. So now is the time to get back under and finish replacing this Belt.
Go to page   <<       

Jump:     Back to top

User Colour Key:
Head Administrator, Administrator, C6 owner, Technical Expert, C6 Premier Discount Club