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[blue_dream]

Evening people
                       can someone please help, i think i have a failed cam sencer, how can i check this, no fault codes listed, car will not fire but turns over fine, also what purpose do knock sencers do, is to retard the ignition  :-/ :-/
                                      thanks

[alank46]

Hi
Which engine is it.
Alan

[rustym95]

Hi i think its your crankshaft sensor, as far as  know that when the crankshaft sensor gose you cannot start the engine, it on some models if not working the engine will not start as it turns off the ECU. other thing to try is the earths under the battery are all good. a fail'd cam sensor only puts the engine into limp home mode, conditions must be fulfilled for at least 3.5seconds, engine would be limited to 4512rpm, and ignition is retarded by 12 degrees CA and knock control is blocked. if you do get codes 19 and 92 injection and ignition are blocked and engine will not start.

[blue_dream]

Hi guys
           ok, i have a 25 v6, have change crank sencer for a know good one, still the same,reason for repair was to replaced crank shaft oil seal made certain everthing was on TDC, ran ok before but pouring oil out,ok when turning over it seams the valve timing is out have checked this many times stripping and rebuilding the top,unable to understand set up tdc on the exshurt?? cam  :-/ :-/ no1, 2,3 then 4 should be inlet first  :-/ :-/

[rustym95]

there are 2 types of crank sensors using the vin number as long as the engine and ecu have not been changed you should find the right one, is yours the one with the pin in the midel of the camshaft sprocket at bottom says inet and on the right say exhaust, cos that is the setting that has to br right be for the timing can be set.

[rustym95]

on cam, left cam left should be on 1cog before 1, the crank timing should be at pointer on oil pump housing, cam sprockt right should be on 2 thats the timing marking i gote in book or with the crank pulley off should be at DBC, cam right left dead on 3 and right side on 4. have you changed the cambelt at same time?

[rustym95]

starting on piston 1. bye way.
Right hand cylinder head exhaust 1
right hand cylinder head inlet 2
left hand cylinder head inlet 3
left hand cylnder head exhust 4
ensure the camshaft locating pin is engaged n the corect sprocket cut out.

[blue_dream]

Hi guys
           Thanks for coming back, had to change front crank oil seal as oil was pouring out, took apart ,put cams and crank on TDC before taking belt of and used the cam locking kit, put all back and now the bloody thing wil not start 

[rustym95]

do you still have the crank pully off, have a looand see when in line at the tops that it alind at the dead center bottom.

[blue_dream]

Hi guys
             Thanks for coming back, yes all cam spockets lined ie 1234 starting from the left where the belt tensioner is, timing gear spocket pointing to the cut out on the oil pump housing so pointing down, used a mirror to double check  this, removed cam covers and checked that the valves where on the rock to make certain i, am on TDC  :-? :-?

[rustym95]

right now remove  spark plugs and run the engine for a few sec's and smell plug holes to see if there is a smell of fuel, if there is a smell of fuel, then it is down to no spark, or spark with out fuel. check the lead to the DIS make sure its good and clean. see if fuel first

[blue_dream]

Hi mate
            Firstly sorry for the delay in coming back, work is getting in the way, yes their is a smell of petrol, plugs are covered in petrol, have taken no 1 spark plug out connected to ht lead layed on block turn over blue spark seen   
 Any other ideas mate, this is getting a pain, i may have to give to the stealiers ( vauxhall outlet)
Thanks
 Simon 

[rustym95]

Hi mate
            Firstly sorry for the delay in coming back, work is getting in the way, yes their is a smell of petrol, plugs are covered in petrol, have taken no 1 spark plug out connected to ht lead layed on block turn over blue spark seen   
 Any other ideas mate, this is getting a pain, i may have to give to the stealiers ( vauxhall outlet)
Thanks
 Simon 
if plugs are coverd in fule then there must be tomuch fuel, cheack the air intake making sure that all the breather pipes are not blocked up, if they are ok. its not the cam sensor and not crank sensor as you have fuel and a spark,air is needed, but if there is tomuch fuel it will flood the spark plugs, have you cheacked the fuel regulator, it has a black air pipe on it and is round, I have a funny feeling there is somthing gone wrong with the ECU. but maybe wrong. air + fuel+spark and timming. it hard to know what it could be with not being there, try what i said see if that make a dif or not. :-? :-?