Ok tonight I have done a bit more trouble shooting.
I think its fuel related, that much I am certain. So Tonight I started the van up and heres the thing it actually starts really well, unlike previous issues it starts straight away but may not fully fire up unless I have my foot on the throttle. So I think the timing is bang on. Using the Cold start advance has very little affect, a tiny bit, but not alot.
So I got it started, running like a dragster as per videos and revving it didnt cure anything to start with and generally it was hammering pretty badly. I figured I'll run it for a few minutes to warm it up and see how things change and sure enough after a few minutes at lower revs (1500rpm or so) it suddenly stopped hammering and sounding like a bag of nails and it quietened down to sound 'normal' but it was spitting a little and then it just seemed to clear, it stopped smoking and was running 'nice' at 1500rpm.
I revved it up and it was still sounding ok but at really high revs is was still a little noisy. Then I let the revs drop. I proceeded to gently lower the RPM from 1500-1400-1300-1200 (I dont have a rev counter but you can kinda tell) and it was running as it should, until I got to about 1000rpm where it missed the odd beat so letting off further it turned evil dragster, it was like you got to 1000rpm and someone threw a bag of nails in the manifold! From 4 cylinder to 2 cylinders with a ton of smoke and a bag of spanners sound!
Raising the revs back to 1000rpm didnt really solve it, but raised a little further it just cleared totally back to silence running.
It will not idle at all, it stalled umpteen times and at a push it runs for about 30 seconds like a dragster when you let off the throttle making it difficult to even get to the back of the van to rev it up and listen that end!
As light wasnt great as it was getting late I couldnt see alot in the engine bay, but what I have noticed is I have a small diesel leak, for some reason it seems that on cylinder 2 the injector is leaking, the other week I though it was the return line, so I replaced those all but still it was wet and when I had a closer look it was leaking from around the nut that goes onto the injector, the nuts tight too, so unless theres a tiny bit of something on top of the injector of the pipe just needs seating, but seriously I cant see that causing the way this runs, we have lots of other diesel stuff here and you just lose a cylinder when you crack a pipe off or have a leak, it doesnt sound like a bag of nails!
I mean I dont have masses of experience with diesel, but to me it seems like the pumps not putting out enough pressure on idle and when the revs pick up its then enough to pop the injectors properly (which I changed the other month for a better set I have which may just need a higher pop pressure). On the previous thread I had it was mentioned about the vanes inside the pump sticking and I am wondering if thats the trouble I have, so tomorrow I am going to look to swap the fuel pump over with the others I have (I have a TD of an unknown quantity and an NA that I ran for a while then had starting problems, which we think was down to the slow starter that then when pop). If the problem remains then then I will swap from my unknown TD to my NA pump, now I know how to time it all up and see how that goes, the NA pump used to run the injectors but if the TD pump works then I'll stick with it and tear mine down.
Other than that I am not sure, I do think however the engine itself is in average mechanical condition and the noise and issues I'm having are fuel pump related.
Any other suggestions would be useful while stripping it.
Cheers
Topic: So my 1.6TD is running like a dragster, but not in a good way. (Read 9427 times)
