Hi All
Some of you may remember me posting my woe's relating to my 1.6 HDi 55 plate 407, it wouldn't rev over 1500 rpm, loads of black smoke/soot out of the exhaust.... blah blah blah.
Well, it's been sat in the back yard for almost a year and I decided to have another go at it.
After looking at live data (In Graph form) and using a boroscope, the live data indicated an airflow issue and the boroscope identified carbon build up on the inlet valves. Soooo, off with its head.
Removed the head and had to use a rubber hammer to tap the exhaust valves out as they were tight, I had a friend take it into his work to de-coke it and give it a damn good clean, the valves were also cleaned along with all other components associated with the internal workings of the head, it was also discovered that the 2 cams were not timed correctly, they were 1 tooth out!!!!!! not sure how that happened.
Anyway!! the head was put back on the car and everything reconnected and plugged in.
Now......... with great expectations I turned the key and it spun...and spun....and spun.......and spun, not totally unexpected due to everything that had been done to it so we tried again and it spun.......and spun.......... it tried to start.........then spun.....and spun.......and spun. We left it for a while and tried again and it spun...........You get the idea
So we hooked up the tow bar and thought we would try and bump it whilst towing it, pulled it down the road and it SSSSSsssppppppppuuuuuuuunnnnnnnnnnnn for a good few hundred yards, More than once but still would not start.
Plugged PP in and no fault codes (Initially there was but these were cleared and have not returned) live data shows fuel pressure to be good, air flow to be good, basically, Everything appears good.
SO, What do I do next????
Just as a side note, whilst the head was off I poured a little diesel in each cylinder and left it in overnight. Upon checking the next morning, Cylinders 2, 3 and 4 were empty, Cylinder 1 still had some in. Could this be an indication that the rings/cylinder walls are worn?
I have ordered a Cylinder compression tester for diesel's which should be with me after the weekend and will report back with the results.
It is work doing a leak off test of the injectors?
Any tips or clues would be greatly appreciated.
Cheers
Nelix
Some of you may remember me posting my woe's relating to my 1.6 HDi 55 plate 407, it wouldn't rev over 1500 rpm, loads of black smoke/soot out of the exhaust.... blah blah blah.
Well, it's been sat in the back yard for almost a year and I decided to have another go at it.
After looking at live data (In Graph form) and using a boroscope, the live data indicated an airflow issue and the boroscope identified carbon build up on the inlet valves. Soooo, off with its head.
Removed the head and had to use a rubber hammer to tap the exhaust valves out as they were tight, I had a friend take it into his work to de-coke it and give it a damn good clean, the valves were also cleaned along with all other components associated with the internal workings of the head, it was also discovered that the 2 cams were not timed correctly, they were 1 tooth out!!!!!! not sure how that happened.
Anyway!! the head was put back on the car and everything reconnected and plugged in.
Now......... with great expectations I turned the key and it spun...and spun....and spun.......and spun, not totally unexpected due to everything that had been done to it so we tried again and it spun.......and spun.......... it tried to start.........then spun.....and spun.......and spun. We left it for a while and tried again and it spun...........You get the idea
So we hooked up the tow bar and thought we would try and bump it whilst towing it, pulled it down the road and it SSSSSsssppppppppuuuuuuuunnnnnnnnnnnn for a good few hundred yards, More than once but still would not start.
Plugged PP in and no fault codes (Initially there was but these were cleared and have not returned) live data shows fuel pressure to be good, air flow to be good, basically, Everything appears good.
SO, What do I do next????
Just as a side note, whilst the head was off I poured a little diesel in each cylinder and left it in overnight. Upon checking the next morning, Cylinders 2, 3 and 4 were empty, Cylinder 1 still had some in. Could this be an indication that the rings/cylinder walls are worn?
I have ordered a Cylinder compression tester for diesel's which should be with me after the weekend and will report back with the results.
It is work doing a leak off test of the injectors?
Any tips or clues would be greatly appreciated.
Cheers
Nelix