|
|
Post by remmington on May 23, 2022 20:59:20 GMT 1
Correct - offside of car has cambelt from (crank to cam) - nearside (gearbox end) in upper rocker cover has gears (gears as you say from front to rear cam) I got a VW Crafter in the yard that has done the same thing - vac pump seized and these gears chewed up. Towed in from another garage - had new injectors and a used ECU on it. Now the chap has spent so much money on it - he is hesitent to have head removed now. my experiences of these are that the ones i've seen don't bend valves, just break the rockers, price of the cams if you can get them is silly though, we have fitted a couple of brand new exchange head assemblies from a place in cornwall i think there's a special tool to set the cams which i don't have so never done it I can do them without the "special tool". I have seen them with bent valves/rockers/cams/alloy cam carriers. FAI do the cams. |
|
|
|
Post by OldGit on May 23, 2022 22:58:05 GMT 1
Are these the cams with the movable lobes? ISTR something about they're designed to move to prevent valve/piston damage but just end up causing running issues.
|
|
|
|
Post by givusaclue on May 23, 2022 23:40:43 GMT 1
Are these the cams with the movable lobes? ISTR something about they're designed to move to prevent valve/piston damage but just end up causing running issues. They do move lobes, much the same as the psa 1.4 & 1.6hdi’s, about as fragile as a premier league fairy errh I mean footballer, no I meant fairy 😂 |
|
|
|
Post by valhalla on May 25, 2022 23:29:27 GMT 1
Only other thought, which is something I have seen on an Amarok of this approximate vintage: Is the EGR valve jammed wide open?
I would have to double-check the engine series I had this on. Whatever it was, I would never buy one. Biggest pile of c**p I have ever worked-on - terrible design of control system and diagnostics meant that you were better-off putting the scantool down and using back-to-basics multimeter, etc. The thing had set no codes (scanned with VCDS at that time), but the intake system was falling apart inside.
EDIT : Just found that the unit I was working-on was a CDCA of 2012 vintage, so tail-end of that series, and not relevant, I think....
|
|
|
|
Post by givusaclue on May 26, 2022 7:43:38 GMT 1
Pretty sure the cams have shifted slightly, got a very even low compression 14-14.5bar all the way across, 19-31bar is the spec, contacted the person driving at the time who said the brakes felt fine but stalled at a junction & never run since.
Going to remove the injectors, cam cover & servo pump to see if I can see a cause today if I get time
|
|
|
|
Post by wightdiag on May 26, 2022 8:58:48 GMT 1
Just one thing, did you sniff/burn test the fuel ? Dead with no codes and low compression ....
|
|
|
|
Post by remmington on May 26, 2022 9:18:33 GMT 1
Pretty sure the cams have shifted slightly, got a very even low compression 14-14.5bar all the way across, 19-31bar is the spec, contacted the person driving at the time who said the brakes felt fine but stalled at a junction & never run since. Going to remove the injectors, cam cover & servo pump to see if I can see a cause today if I get time I use 20bar as the target/minimum to get compression ignition on one of these. |
|
|
|
Post by chippie on May 26, 2022 9:21:36 GMT 1
Don’t these engines have a built in pressure sensor in one of the glow plugs for cylinder pressure?
Maybe get a reading from that on cranking via live data?
My sons Tiguan had the elm on, when scanned showed an issue with the cylinder pressure…( I assume it did, I didn’t scan it, local garage did and found the plug faulty…)
|
|
|
|
Post by givusaclue on May 26, 2022 21:21:24 GMT 1
Just one thing, did you sniff/burn test the fuel ? Dead with no codes and low compression .... No, easy to do in those morning though ta. My cuts & grazes should’ve stopped stinging enough from a 308 1.6hdi fuel rail pressure sensor & plug by then 😟 I’m sure the fuel will soon wake them up again |
|
