My 626 has had some trouble starting in the cold weather, apparently this can be caused by faulty glow plugs or starting circuit....checked that found some corrosion...fixed.
Also could be caused by low compression....havent tested the compression, but the oil consumption is low, there is no water loss, and the power output is good...so I am going to assume at this point its not compression.
It can also be caused by dirty injectors or malfunctioning injectors.
Hmm, seeing as how my motor is occaisionally a bit smokey (diesel fuel smoke out the exhaust) and sometimes not. I think one of the injectors could be a bit suspect.
As my car is a cheap daily drive, I dont really want to take it to a diesel engine place to have the injectors serviced.
I also dont want to replace them with new ones considering theyre $100-$150AUD each.
I could just take them out and have them serviced individually...hmm maybe.
However I acquired a whole pile of low km injectors from an engine importer fairly cheaply.
The question now is....which ones can I use in my engine.
I started looking on line for part number cross reference. Here is the best I could come up with
nozzle holdes,diesel fuel injection,fuel injection pumps,diesel pump,plunger,nozzle
Unfortunately on my engine, the injectors are all rusty and it was really hard to make out the part number.
its a 71-0590. the number is on the top of the holder body on one of 6 sides of the hexagonal "nut" if that makes any sense.
However from the cross reference, this part does not seem to match the ones that are meant to be used in the RF, its listed for a "P654" whatever that is...I couldnt find out any information on line where I was looking.
I have asked around and it seems the general consensus seems to be (from those who have had experience with these motors) is that you can more or less use anything that will fit in the hole.....Hmm.
I am not sure I like to be quite so un informed.
The other problem for me is that I only got a couple of 71-0590s in the pile of injectors aquired. I mostly got 71-1510s and 71-1530s.
Looking at the cross reference again, there are some 71-1510s in the list with different opening pressures...so I might steer clear of the 1510s for the moment.
The 1530s are also listed for the RFG (another name for a normally asprirated RF) I might install 4 of those, they seem to be for an engine thats pretty similar to mine and see what difference it makes..if any.
I dont think I will bother getting them pressure tested, they look relatively clean, if theyre out of motors that havent travelled far they should be alright.
Plus if theyre any worse, i'll just put the originals back in.
Its also interesting to note that not all pre chamber RF motors use the same injector thread.
All the ones I have seen do, so I wonder which ones use different threads, and why...I'll research that one and see what I can find out.
I'll add a piece into the car thread
about the actual replacement of the injectors when it happens.
*edit* I swapped out the injectors, I ended up using 1510s as they looked to be in the best condition, all up to under 1 hour to do.