Cambelts just gone

[Paul Smith]

Wicked. Really stupid question but when i did the timing I did the cams and crank but does the diesel pump need aligning on these engines?

 

[Paul Smith]

After looking at auto data I can't see any option regarding locking the fuel pump so guess it doesn't need locking and can be in any position?

Other thought is there is a chance the cars been mapped. What happens if I'm using the markers but on the map the fuelling has been advanced? How would I know or how would you time it up?

 

[R3k1355]

Isn't pump timing for mechanical injection systems though?
Don't get me wrong I remember how important it was when I did the job on an old 306, ran like a sack of spuds with the belt a tooth out.

 

[Paul Smith]

I was thinking the same thing regarding the injection system but the local garage suggested it so figured I'd investigate

 

[Legojon]

I thought the fuelling would be advanced by changing the tables in the ecu. Not physically adjusting the belt. I've had a couple of cambelts now at stage 1 and stage 2. I didn't even mention to the garage it was mapped or who by.

 

[Rusty2k]

Fuel pressure timing is important to ensure the high pressure delivery pulses from the high pressure pump coincide with the compression stroke of each cylinder.

Pinning the high pressure fuel pump is for the CR engines. The PD engines do not have a fuel pump in the cambelt path.

With the PD engines the high pressure pump element of the fuelling system is built into the injectors and are operated by a rocker arm driven by the exhaust cam, so fuel pressure timing is linked to the timing of the exhaust cam.

 

[Paul Smith]

So as long as i lock the exhaust cam in place then the pump should be in line?

 

[Rusty2k]

Yeah as long as the cam timing is correct you won't have any issues with fuel delivery.

 

[Paul Smith]

Checked timing and I definitely have hit valves :-(

 

[Paul Smith]

Just an update she's a working progress and had 3 bent valves grrrr

 

[Paul Smith]

The garage have it stripped now want 1800 to do the work. Grrrr that's ludicrous

 

['& Son' managed]

Feel for you, but it was never going to be cheap.
Maybe a secondhand or refurb engine could be a better option?

 

[Paul Smith]

Thank you it's just one of those things I guess. I was thinking about 1k so it just hurts A bit lol.

I considered a refurb lump as they are 1300 fitted but now I'm already a few hundred in with the garage it'll work out about the same pennies I reckon

 

[Brimfull]

You could pick up another mk2 for £1800, and sell yours for spares and repairs and get a couple of hundred back or keep yours for spares.

 

[R3k1355]

1800 is pretty expensive, did they give you a breakdown of the costs??

 

[Paul Smith]

Apparently the engineering place doing the head are charging 8 to 900 as they will only do it if they do all 16 valves, skim, rockers, new/repaired camshaft. The rest is Cam belt kit, water pump, head gasket and bolt sets, oil and fluid service.

 

[Marky N]

Really interesting thread albeit unfortunate experience with the cambelt. I'm confused. A little. I've got a chain. I keep hearing that even these have to be tensioned. Not sure of the interval and is there any warning sounds of the chain gets slack. Was also told that my belt needs changing. Every 40k by my dealer who was sorting out another problem. Had he made a mistake thinking mine is of the non- chain variety or is it the other belt that is visible that needs changing? Made reference to changing the water pump as well.

 

[Legojon]

Had he made a mistake thinking mine is of the non- chain variety or is it the other belt that is visible that needs changing? Made reference to changing the water pump as well.

As the work is in the same area, to save on labour (and your engine melting) it's common to do the cambelt and waterpump together (just had mine done weekend gone). If you have a TFSI, then your lucky enough to have a chain on one side and a cambelt on the other. Opinions split on whether the chain just goes or not. But my garage won't touch it unless it starts making a noise.

 

[Marky N]

As the work is in the same area, to save on labour (and your engine melting) it's common to do the cambelt and waterpump together (just had mine done weekend gone). If you have a TFSI, then your lucky enough to have a chain on one side and a cambelt on the other. Opinions split on whether the chain just goes or not. But my garage won't touch it unless it starts making a noise.

A bit naive here but isn't the timing chain an alternative to the normal belt? https://www.aa.co.nz/cars/motoring-blog/engine-maintenance-cambelts-and-chains/

 

[Rusty2k]

A bit naive here but isn't the timing chain an alternative to the normal belt? https://www.aa.co.nz/cars/motoring-blog/engine-maintenance-cambelts-and-chains/

Different engines in the range have different setups.

Specifically with all but one of the 2.0 petrol engines used in the Mk2 Leon they have a cambelt setup but the belt only drives one of the camshafts. The camshafts are linked together at the other end of the engine by a chain.