It's an interesting possibility, but, he does mention EGR and there's no EGR on the 2.4 .Miah said:Resurrecting this.. still have the fault, haven't yet been able to figure out what's causing it..
However, I came across this post: https://answers.yahoo.com/question/index?qid=20090401182642AAPN7aG
Yahoo, so dubious provenance, however the suggestion is that a misfire could be involved.
Now, I have seen the occasional misfire via HDS, and the timing chain is also somewhat stretched, so I do wonder whether there could actually be a grain of truth in that theory.
here are the equivalent images for the dieselJon_G said:The camshaft marks DO point at each other on the diesel at TDC. That may be where the misunderstanding arose?
The coloured links are not essential to getting the timing right.
I've seen this happen before on single cylinder motorcycles. The slow turnover with the starter can sometimes cause the unburnt fuel to detonate before TDC forcing the engine to turn backwards and slacken off the non tensioner side of the camchain, which then rides over the cog teethMiah said:Going by your pictures, this thing has jumped many teeth on the intake cam.
Slightly odd that the intake cam is the one that's skipped, since in theory the chain there will have constant tension from the crank. Theories on this welcome.
I'll have a look, but 3 cm sounds a lot to meMiah said:Is there a specification for how far the tensioner should be extended before chain replacement is required? A very rough measurement I did yesterday suggested it was extended to around 30mm, or there abouts.
Ta on fuse location, saves me digging for a manual.freddofrog said:According to the ESM, fuse 19 in the under-dash fuse-box
just another thought on what has happened, the intake sprocket (on the right) might have pulled the chain past ~10 teeth on the exhaust sprocket when the chain was slack at start-up ? ....but only if the crankshaft really is at TDC in the picture
If you open up the tensioner cover, you can remove the tensioner (by rotating crankshaft backwards to remove tension) . But when you put the cover back you have to wait 3 hours for the liquid-gasket to dry
Hopefully there's nothing bent
I disagree. If the engine has been turned over after the first problem arose then you cannot do any further damage (unless the chain moves over more teeth). If there is no damage but the timing is out, then the cylinders should be showing roughly the same compression since the timing is the same on all, though the full number - 135 psi ? - will not be reached.Miah said:Sounds like a reasonable theory Channel Hopper.
Freddofrog: Don't recall that noise, but then it was 5am, the bonnet was down and I wasn't listening for an imminent failure to chooch.
Re compression test, I'll probably do that and a leak down, but need to fix the timing first, otherwise it's not likely to yield useful results.