Black crud in oil cap.



Went to look at a cheap run-a-round which has not been started for
several weeks. The battery is flat and will need charging so I've not
yet heard it running, but removing the oil cap there was a lot of
hardened black crud inside the cap. The rocker looked clear and there
was no sign of sludge or mayo just this hard crud inside the cap which
crumbled and fell out when I scrapped it. Could it indicate something
serious or because the engine has not been started for a long time? had
a quick google where someone suggested crud in the cap may just be oil
or vapours which get trapped inside the cap and can't circulate so forms
a hard crud if not cleaned out.

.



Relevant Pages

  • basic general question
    ... What im doing is charging a home made HV cap with the following. ... resistor or charging resistor was after the diode to prevent feedback ... as i dont want to drop below the 10ma current if possible and also ...
    (sci.electronics.basics)
  • Re: harnessing lightning, or not
    ... My node is 150 feet away from any ground point. ... Teflon or Delrin or glass or whatever hat that goes from the charging ... So my cap presents a HUGE distance between the node and ground. ...
    (sci.electronics.design)
  • Re: Cant remember if anyone else mentioned it,
    ... I did it with my Carlton too. ... I try to put the cap where it ... won't let the bonnet shut now. ... fuel and oil cap used the same fitting - so we had to trundle off in his ...
    (uk.rec.cars.modifications)
  • Re: tech question: 1 farad battery cap failure
    ... I pulled the board then desoldered the cap. ... Do the 9 volt battery thing, ... So I guess the charging circitry on the mpu is dead. ... Now measure the cap Voltage. ...
    (rec.games.pinball)
  • Re: Homemade CDI
    ... CDI's basically work by charging a cap during the dwell period, and discharging through an SCR into the coil. ...
    (uk.rec.models.engineering)