ProcrastinatorFraser
Active Member
I played with the timing a bit again, retarded it until there was white smoke, then advanced it little by little until it wasn't emitting white smoke, seems to run well now, but still has a knock to it.
ProcrastinatorFraser
Active Member
That was my next guess, faulty injectors. I don't know where i can get them tested over here...
ProcrastinatorFraser
Active Member
Can't be sure actually. If it helps, it can't idle slowly, if the rpm's drop to (what sounds like) under 1k, it drops to very very low rpm in which it feels like it's fighting for it's life, shaking the vehicle to bits.
ProcrastinatorFraser
Active Member
ProcrastinatorFraser
Active Member
So the idle at the start was ok? It sounds a bit too high for me, maybe because the previous engine was a 2.5n/a 
Sounded spot on and just like my two, most small engines tickover at roughly 750rpm give or take a bit.
The n/a also ticks over at the same speed but as its not direct injection its sounds different.
Point of note that clear braided fuel hose is ****e and will cause issues when it gets old/hard, which happens surprisingly quickly.
The n/a also ticks over at the same speed but as its not direct injection its sounds different.
Point of note that clear braided fuel hose is ****e and will cause issues when it gets old/hard, which happens surprisingly quickly.
ProcrastinatorFraser
Active Member
I've not finished setting it up yet
I just wanted to get things running to see what i need to deal with...
ProcrastinatorFraser
Active Member
I said ''Yes, those are zip ties for a belt, ignore that."
Vinlander
Well-Known Member
Ah, so that's where the smoke is coming from?I said ''Yes, those are zip ties for a belt, ignore that."
ProcrastinatorFraser
Active Member
Nope! the smoke was coming from the exposed crankcase breather! As i said, it's not finished yet
It is now piped back to the intake, it's not venting to atmosphere anymore
Vinlander
Well-Known Member
Oh yes, right you are.Nope! the smoke was coming from the exposed crankcase breather! As i said, it's not finished yet
It is now piped back to the intake, it's not venting to atmosphere anymore
Well, I have my idle turned down a little because I like it to sound like there's a team of belligerent retired blacksmiths hammering out raw hot grunt under the bonnet. This does not imply that any favours are being done for actual workings.
In the absence of a timing torch you just do what feels right.
Vinlander
Well-Known Member
Not because I wish to deprive anyone of the pleasure, but to avoid a missed opportunity :
That's what she said.
ProcrastinatorFraser
Active Member
I'm beginning to believe the source of the knock is one of the injectors dripping or something. I tried using some injector cleaner, exhaust gases look cleaner, but the knock is still present. Think I should send them to a specialist ?
Before spending money have you actually checked and got the timing spot on?
Have you tried cracking each injector in turn with engine at idle and seeing if they all make the same difference? if one doesnt seem to make the same amount of difference, swap it with another cylinder and if the fault moves its the injector and if the fault stays put its to do with the original cylinder.
Obviously you need the idle set properly on the idle screw so you can be sure there is actually a difference each time.
Have you tried cracking each injector in turn with engine at idle and seeing if they all make the same difference? if one doesnt seem to make the same amount of difference, swap it with another cylinder and if the fault moves its the injector and if the fault stays put its to do with the original cylinder.
Obviously you need the idle set properly on the idle screw so you can be sure there is actually a difference each time.
ProcrastinatorFraser
Active Member
I've tried just about every timing setting known to man and the knock is still present. At a certain speed there is also a vibration which I believe may be normal because my disco 300tdi also does this. I tried cracking the injectors off and one cylinder definitely makes less of a difference than the others, I'll try experimenting a bit today.
