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sooty air filter

Posted: 28 May 2021, 07:58
by sivan
Morning All

Had my bus serviced last year not long after purchase and air filter was very dirty, put this down to PO neglect ,however just had a service again and air filter is very black/sooty after only 3000 miles .I have noticed that around the inspection flap behind number plate does get pretty black aswell .Any ideas as what could cause this ? TIA

the bus is a 1.9 1Y diesel conversion 

Re: sooty air filter

Posted: 28 May 2021, 11:24
by Aidan
what sort of air filter do you have ? post up a picture or two, every conversion is different so it is difficult to advise without knowing more - the black button marked i can be used to easily add pics when you post up a reply

Re: sooty air filter

Posted: 28 May 2021, 21:18
by R0B
Posting pics.Image

Re: sooty air filter

Posted: 29 May 2021, 21:01
by sivan
  1. ​​​​​​​​​​​​​​ImageImage

Re: sooty air filter

Posted: 29 May 2021, 21:15
by sivan
mechanic thinks may have a split in back box causing soot but why would this get into air box?I cannot see a split and because the back box is welded to the downpipe i cannot remove it without removing downpipe  aswell  but looks like the studs / nuts on the manifold are corroded so badly they will need to be cut and manifold looks like its seen better days !Image

Re: sooty air filter

Posted: 10 Jun 2021, 06:45
by silverbullet
sivan wrote: 29 May 2021, 21:01
  1. ​​​​​​​​​​​​​​ImageImage

Your n/a diesel appears to be missing the breather valve in the cam cover, so it is inhaling oil vapour.

Re: sooty air filter

Posted: 15 Jun 2021, 21:42
by sivan
Thanks  Silverbullet, is that the ufo thing that attaches to rocker cover and the pipe that's already there?Image

Re: sooty air filter

Posted: 16 Jun 2021, 06:34
by silverbullet
Yes that looks like the part (not that I am any expert on diesels but all the ohc engines have one afaik)

Re: sooty air filter

Posted: 17 Jun 2021, 09:36
by sivan
:ok